INTP Mailing List Frequently Asked Questions ~~~~ ~~~~~~~ ~~~~ ~~~~~~~~~~ ~~~~~ ~~~~~~~~~ Version 1.3 February 19, 2003 Copyright 1996, 1997 William J. Dodd, except as follows: Questions 1.5 and 1.10 are Copyright 1996, 1997 William J. Dodd and Richard Himes. Questions 1.6, 1.7, 1.8, 1.13, and 2.3 are Copyright 1996, 1997 William J. Dodd and Daniel Daily. Question 2.7 is Copyright 1996, 1997 Richard Himes, Daniel Daily, and William J. Dodd. Question 1.14 is Copyright 1997 William J. Dodd and Daniel Daily. This document may not be reproduced in whole or in part for commercial use or for profit without the written permission of the copyright holder(s). Reproduction for non-commercial use is permitted, provided the appropriate copyright notice(s) are included. DISCLAIMER The authors of this document are not professional psychologists or counselors. They have used their best efforts to prepare answers to the questions posed here. However, they make no warranty or guarantee of any kind concerning the fitness or suitability of these answers for any purpose. REVISIONS Version 1.3: Modified subscription and archive information to reflect server change. 02/19/2003 Version 1.2: Modified subscription and archive information to reflect server change. 08/29/2001 Version 1.1: Updated copyrights. Added REVISIONS section. Updated CREDITS section. Added two new questions (1.14 and 1.22) and incremented question numbers on present questions 1.15 through 1.21 from previous version. Modified present questions 1.6, 1.7, 1.11, 1.18, 1.19, and 1.20. Implemented consistent format in block quotations. Version 1.0: Initial version, released June 26, 1996. INTRODUCTION This is the Frequently Asked Questions (FAQ) document for the INTP Mailing List. Information about how to get this document is posted periodically to the list. Not all the questions in this document have been asked on the list. The document attempts to provide, in some sort of "natural" order, information that a newcomer to the list (and to personality typing in general), might find valuable. The INTP Mailing List is the most extensive gathering of INTPs in human history. Never before have individuals with this extremely rare personality type--a type so rare that the entire world-wide population of INTPs is less than the 1994 population of France, or of Italy, or of the United Kingdom--associated on a planet-wide scale. Never before have so many of these unique people simultaneously been aware that they are not alone, not abnormal, not an aberration, _and_ been aware of others with whom they share their type. Out of this confluence of hitherto isolated men and women of all ages who have gifts that, for the most part, are unrecognized and unacknowledged by much of society, may come new ways for them to live as they live best and to use their gifts for the betterment of their own lives and the lives of their non-INTP fellows. To that end, the authors earnestly hope this document will contribute. CREDITS This document was written by members of the INTP Cabal, a small sub- group of subscribers to the INTP Mailing List. William J. Dodd [wjdodd@fsp.fsp.com] is the principal author. Rich Himes [rhimes@nmia.com] and Dan Daily [ddd@drmail.dr.lucent.com] wrote drafts of question 2.7. Dan Daily contributed significantly to the text of questions 1.6, 1.7, 1.8, 1.13, 1.14, 2.3, and 3.17. Rich Himes made suggestions for improving questions 1.5, 1.10, 1.11, 1.20, 3.2 and 3.14; he also suggested some approaches for question 2.5, and the inclusion of questions 2.8, 2.9, and 3.15. The following members of the INTP Cabal gave general comments or encouragement: Anna Himes [achimes@nmia.com] Charlie Howse [CHAHOWSE@MDCC.EDU] Darryl Dickson-Carr [dbcarr@mailer.fsu.edu] BethC [us013847@interramp.com] noneoftheabove [nota@one.net] D Diemand [diemand@sover.net] [DSmith6969@aol.com] The former list owners of the INTP Mailing List also participated: Beth Coleman [intplist@mindspring.com] Kim Justice [justicek@edge.ercnet.com] Scott Pallack [skybird@wizard.com] David Loewenstern [loewenst@paul.rutgers.edu] provided material for question 1.20, and graciously allowed use of the quotation contained therein. Questions and comments on this document can be directed to the maintainer of the FAQ, William J. Dodd [wjdodd@fsp.fsp.com]. CONTENTS 1 The INTP Mailing List 1.1 Whom is this mailing list for, and what is it about? 1.2 What is an INTP? 1.3 What is the Myers-Briggs Type Indicator? 1.4 I'm not sure if I'm an INTP or not. Can I be on the list? 1.5 I know that I am _not_ an INTP. Can I be on the list? 1.6 Can any topic be discussed on the list, or only type-related topics? 1.7 What about arguments? 1.8 What about heated arguments? 1.9 What if I just want to read and not post? 1.10 What if I want to post and not read? 1.11 If I read a post and want to say something, how should I go about doing this? 1.12 The same people seem to post all the time. How do I get a word in edgewise? 1.13 I posted something but no one replied. I know my message got through because I received a copy from the list. Why are they ignoring me? 1.14 I posted something and several people replied. But a few of the replies attacked, derided, or otherwise vilified what I wrote, or seemed to make me the object of an inside joke. Is this typical behavior on this list? If it is, I'm unsubscribing. 1.15 If I post something to the list, who besides the list subscribers will see it? 1.16 I'm going to be out of town for awhile. How do I keep from having a jammed mailbox when I return? 1.17 How do I unsubscribe/resubscribe? 1.18 How active is the list? 1.19 Who are the subscribers to the list? 1.20 Who started the list? 1.21 Can I get back posts from the list? 1.22 Can I contact individual subscribers to the list? 2 The INTP Personality 2.1 What is an INTP? 2.2 What do you mean by "perceiving function" and "judging function?" 2.3 What are some of the personality characteristics of INTPs? 2.4 Some of what I read describing INTPs seems to apply to me and some of it doesn't. What now? 2.5 I seem to [insert observed behavior here] a lot. Is this typical of INTPs? 2.5.1 Observed behavior: [have a messy desk; keep stuff] 2.5.2 Observed behavior: [be unscheduled; miss appointments] 2.5.3 Observed behavior: [bounce from one interest to another] 2.5.4 Observed behavior: [not complete projects as interests change] 2.5.5 Observed behavior: [have difficulty making decisions] 2.6 How common is the INTP type? 2.7 What types are best for relationships with INTPs? 2.8 What jobs or career fields are best for INTPs? 2.9 Are there any famous INTPs? 3 The Myers-Briggs Type Indicator (MBTI) 3.1 What is the Myers-Briggs Type Indicator? 3.2 What do you mean by "personality type?" 3.3 How does this "Indicator" work? What is the theory behind it? 3.4 What are the different perceiving and judging functions? 3.5 But this gives only two letters for each "type," not four, and only four "types," not sixteen. Where do the other letters come from? 3.6 This all sounds like a lot of psychological mumbo-jumbo to me. Is there any validity to it? 3.7 Doesn't all this "categorizing" and "grouping" stereotype people, and limit them based on someone else's preconceived ideas? 3.8 Does being a certain type mean my behavior is predetermined? 3.9 Which type is most common? 3.10 Which type is best? 3.11 I sometimes see additional symbols used in someone's type designation. What do these mean? 3.12 How does one develop a "type?" Is type inherited? 3.13 How do I take the MBTI? How do I find out my "type?" 3.14 How can I find out someone else's type? 3.15 Are there any famous people whose types are known? 3.16 I have not taken an "official" MBTI. Can I be on the INTP Mailing List? 3.17 I want to find out more about all this. Can you list some additional [insert category of reference here] on type? 3.17.1 Category of reference: [books] 3.17.2 Category of reference: [Internet resources] FREQUENTLY ASKED QUESTIONS 1 The INTP Mailing List 1.1 Whom is this mailing list for, and what is it about? The INTP Mailing List is a mailing list for those who have been identified as INTP (Introverted iNtuitively Perceiving Thinkers) by the Myers-Briggs Type Indicator (MBTI) or related instruments, and for those who are interested in learning about or interacting with INTPs. For information concerning what is discussed on the list, see question 1.6. 1.2 What is an INTP? See section 2. 1.3 What is the Myers-Briggs Type Indicator? See section 3. 1.4 I'm not sure if I'm an INTP or not. Can I be on the list? Yes. Interacting with people who know they are INTPs is a good way to find out how closely your own personality characteristics match the INTP profile. However, as with any mailing list, you should not rely exclusively on the list for information you can easily find elsewhere. For example, don't use the list merely to ask, "What does INTP mean?" Do your part to try to learn as much as you can. See question 3.17 for some suggested references that can help you learn more about type. 1.5 I know that I am _not_ an INTP. Can I be on the list? Yes. The primary focus of discussions on the list is the concerns and interests of INTPs, but respectful participation by other types who evince an honest desire to learn about and interact with INTPs is welcome. For example, several subscribers are non-INTPs who are in close relationships with INTPs (e.g., spouse, SO, parent, sibling, friend) and who seek to better understand INTPs in general and their own relationship in particular. 1.6 Can any topic be discussed on the list, or only type-related topics? There are no topic restrictions. Although questions and comments about type and its relevance to INTPs occur frequently on the list, there are also numerous "conversations" about other matters and there is much light banter. Many subscribers look on the list as a virtual intellectual community where they can find peers not otherwise available to them. INTP subscribers in particular are likely to find--possibly for the first time in their lives--others who understand the same obscure references they understand, share the same eclectic interests they enjoy, or are fascinated by the same unusual subjects they have studied compulsively for years and have talked about previously only to an unappreciative audience. The list is not a "general" discussion list, however. Even topics that are not type-related are treated from the unique INTP perspective. In addition, experience has shown that certain topics inevitably lead to bi-stable or multi-stable equilibrium positions whose various proponents state and restate their views with little or no subsequent alteration. Political and religious topics in particular display this behavior. Participants in such discussions should remember that the list exists for the sake of all subscribers, not for a verbose few, and should be sensitive enough to end the discussions quickly or continue them through private email (see question 1.22). 1.7 What about arguments? The INTP Mailing List is not a debate list and does not exist primarily as a forum for those who want to "prove" their own points or proselytize others. Disagreements are expected, and accepted, but rude and intolerant behavior is not. In particular, the rules for posting explicitly state: Personal attacks, ad hominem arguments, and flames are STRICTLY FORBIDDEN. It's my [the list owner's] virtual living room so penalties for violators include reprimands (private and/or public), suspension, and permanent exclusion depending on the severity of the violation and my mood. This means that it is acceptable to post, "I disagree with what [insert name here] said, because [insert reason here]. I believe that [insert opposing position here] because [insert reason here]." It is NOT acceptable, however, to say, "I disagree with what [insert name here] said, because [insert name here] is a complete and utter idiot and a communist/fascist/liberal/conservative/other bastard who should be hung, drawn, and quartered." See also question 1.8. Interestingly, there seem to be few (expressed) disagreements among the list participants. Except during the most intense discussions, "smilies" are implicit in most posts. (The "official" smilies are eyes and a smile [ :) ] and a disembodied smile [ ) ], representing the chosen mascot of the INTP Mailing List, the Cheshire Cat from Lewis Carroll's _Alice's Adventures in Wonderland_.) 1.8 What about heated arguments? There have been surprisingly few "flame wars" on the INTP Mailing List, and the quality of discourse is quite high. From time to time, subscribers who take themselves far too seriously irk others by posting noticeably overbearing messages, but such subscribers generally do not stay on the list. In most instances where participants strongly hold contrary opinions, a (sometimes lengthy) period of stating these opinions ends with an agreement to disagree. See also question 1.7. 1.9 What if I just want to read and not post? "Lurking" is permitted and accepted. There is no requirement for subscribers to post. However, the INTP Mailing List has an unusually low lurker-to-subscriber ratio: more than 75% of the subscribers post at least occasionally. Clearly, INTPs can have much to say to a receptive audience (see questions 1.18 and 2.3). 1.10 What if I want to post and not read? Don't do it. Besides being an egregious breach of "netiquette," posting messages without knowing the current topics of discussion adds to the already heavy traffic on the list while contributing little or nothing of value. New subscribers are urged to lurk for a week or so to become familiar with the dynamics of the group (though they can introduce themselves as soon as they feel comfortable doing so; occasionally, replies to an introduction will start a new thread in which the newcomer can immediately take part). Current subscribers who have not been following recent discussions are asked to first try to find out if a question, topic, or thread has been considered in the past few weeks before asking the question, proposing the topic, or starting the thread. See question 1.21. 1.11 If I read a post and want to say something, how should I go about doing this? The exact procedure to reply to a post depends on the email software you are using. Most such software has a "Reply" function which will send your response _to the original poster_ (see question 1.22). If you want the list to also get a copy, you must include the list address either in the "To" or the "Cc" field of your message. Note that, in this case, the original poster will get _two_ copies of your reply (the one directly to her/him, and the one that comes to him/her from the list). Some people respond directly to the list and do not include the address of the original poster; in this case the original poster will get only one copy of the reply. However, this method usually requires manual editing of the address fields before sending the message. In your post, you should include enough content from the message to which you are replying that others can follow the discussion without having to go back to the original message. However, you should not indiscriminately quote whole messages, especially when you only want to agree (or disagree) with the message. Also, you should be careful to accurately attribute the quotations you are using (a standard attribution would give the date, time, and author of the original post; for example: "On Feb 32, 2354, at 1735 Earth Standard Time, James T. Kirk said:"). There may be a need for several levels of quotation and attribution. Here especially it is important to be sure that a newcomer to the discussion can pick up the thread with minimum difficulty. This may require more than a simple automatic copy of the previous message into your reply. Because your post might be quoted and re-quoted as the thread continues, remember to allow a generous right-hand margin. Otherwise, your words will eventually be pushed to the next line and the message will be harder to read. The usual recommendation is no more than 72 characters per line. You should take particular care with the Subject line of your post. Many subscribers can read only part of the many messages received each day, and rely on the Subject line to guide them in their selection of messages to read. When replying to a message, email software usually adds "Re: " to the original subject; if you are replying to an ongoing thread and continuing the discussion along the same lines this is normally adequate. If, in your reply to an ongoing thread, you veer from the subject to a new realm of discussion, you should change to a more appropriate Subject line. This usually requires editing the default Subject line offered to you by your email software. Often, it is appropriate to include in the new Subject line a reference to the old subject; for example, "Antique Cars (WAS: Old Fords)." 1.12 The same people seem to post all the time. How do I get a word in edgewise? Just join in. Or propose a new topic/start a new thread by posting a question or comment. But see question 1.10. 1.13 I posted something but no one replied. I know my message got through because I received a copy from the list. Why are they ignoring me? They are not necessarily ignoring you. Perhaps no one had anything to say about what you wrote. Perhaps someone wanted to read your message or to reply but did not have time to do so; there is a large volume of messages on the INTP Mailing List (see question 1.18), and few list members have time to read every post or to follow every thread. Some may have started a response, got distracted or changed their minds, and never sent it. Some may spend days formulating a response in their heads or on their terminals but ultimately never respond because they distrust their own abilities. Most likely, though, many at least thought about what you wrote. In fact, intriguing messages can go by without comment and questions can go unanswered because list members are thinking about what has been said. If you observe carefully, you may see subsequent messages which contain a hint that some understood or agreed with you; your ideas were added to the myriad of ideas constantly churning in their minds, and they transformed or integrated your thoughts into a topic they wanted to discuss. They may not have responded directly to you or acknowledged your post; they may not remember who you are or be able, later, to link you with your message. But you have contributed to the discussion all the same. If your remarks do not resurface, it is possible that everyone agreed with you and had nothing to add; be at peace that no one said you were plainly wrong, because if an INTP really thought you were, and the topic was important to him or her, their disagreement would be brought to your attention. If you actually do get a response, you may find that it has only a tenuous relationship to your original message. An abstruse mathematical topic or a discussion of quantum mechanics can reappear as a message complaining about the decline of education in America or about math or physics phobia (and vice versa!). Your serious post may be transformed into a poem, a play on words, a song title, or a scintillating vulgar reference. Finally, the composition and attention span of the INTP Mailing List is dynamic and often chaotic. If you submit your message again, at a later date, you may find a new or a more attentive audience. 1.14 I posted something and several people replied. But a few of the replies attacked, derided, or otherwise vilified what I wrote, or seemed to make me the object of an inside joke. Is this typical behavior on this list? If it is, I'm unsubscribing. These kinds of replies, addressed both to new and to veteran subscribers, appear on the list from time to time. Usually, however, they are not meant as personal attacks on the original poster (which would violate the list rules; see question 1.7), and they do not mean that new subscribers and new viewpoints are unwelcome. Rather, such replies are most often manifestations of certain characteristics of the INTP personality type. Keirsey and Bates, on p.187 of _Please Understand Me_ (see question 3.17), powerfully describe one of these characteristics: For INTPs . . . . It is essential . . . that whatever is stated about the universe is stated correctly, with coherence and without redundancy. This is the INTP's final purpose. It matters not whether others understand or accept his or her truths. Thus, precision and consistency in thought and language are of great importance to INTPs; they are quick to notice a flawed argument or a flawed position and will often point out such flaws without concern for whether someone else will agree. For this reason, if another subscriber perceived your post as revealing any weakness or shortcoming in whatever position you were trying to uphold or statement you were trying to make, you will likely hear about that, on the list, from the other subscriber. In addition, while INTPs are flexible and accommodating in many areas, they are fervent--even zealous--about those beliefs they hold strongly. If your post expressed or implied--in some cases, if it could remotely be construed as having expressed or implied--an agreement or a disagreement with an ardent belief of someone else on the list, he/she might well let you know of her/his favor or disfavor. (This does not mean that all INTPs hold the same beliefs. Indeed, there are some significant disagreements among certain list subscribers; see question 1.8). Most INTPs love a good pun or double-entendre and are uniquely sensitive to the possibilities of such humor. If your post allowed an INTP to interpret it in a way other than you intended, someone on the list has probably interpreted it that way and may write back to let you know. This person most likely understands full well what you _meant_ to say, but it is important to him/her to let you and the list know what you _could have_ been saying. Or, she/he may refer to something that was discussed or occurred previously on the list and establish a hitherto unanticipated connection between the previous discussion or occurrence and your post (see question 1.13). Since no one has any way of knowing for sure how long you have been subscribed, the respondent may not know how much of the "list history" and "family lore" you are familiar with and that you are "in the dark" about the significance of the reply. There may be rare occasions when replies of this sort are indeed meant as personal attacks (in clear violation of the list rules; see again question 1.7). The perpetrators may even get away with it, since it is impossible for the list owner to screen every post. Until the culprits tire of such rudeness, or leave the list (see question 1.8), the best procedure is to ignore their taunts as one would ignore a child having a temper tantrum. The INTP Mailing List is meant to be a "safe place" for INTPs, where they can express their personality without deprecation. There are few forums in everyday society where INTPs can indulge in the stimulating discourse and frequent intellectual word-play that occurs on the list. It is unrealistic, therefore, to expect posts of this nature not to appear; many, again, are actually "tongue in cheek," with "smilies" included or intended (see again question 1.7). After some experience as a subscriber, you yourself will probably come to appreciate or at least understand the phenomenon. In the meantime, if you allow what you perceive might have been a personal insult to cause you to unsubscribe, you will forego participation in what many INTPs have come to believe is one of the most significant entities in their lives. 1.15 If I post something to the list, who besides the list subscribers will see it? The INTP Mailing List is a private list, and posts sent by the list server are received only by the list subscribers. However, the Internet is not a secure or a confidential system. With the proper equipment and expertise, anyone can monitor Internet traffic. Further, recipients of posts can, and have (both accidentally and intentionally), sent copies to other than list subscribers. (It is considered a breach of netiquette to forward private email without the permission of the sender.) Therefore, nothing should be said on the list, or in any Internet communication, that you would not want to be read by your wife, or your mother, or your boss, or your co-workers. 1.16 I'm going to be out of town for awhile. How do I keep from having a jammed mailbox when I return? You can unsubscribe, and resubscribe when you get back. 1.17 How do I unsubscribe/resubscribe? To subscribe to the INTP Mailing List, open the URL - http://www.cheshirecat.net/mailman/listinfo/intp A set of instructions can also be obtained by emailing intp-request@intp.org with a subject line of "help". Once subscribed, you will have your own individual "options" page. At this URL you may set options such as "nomail", "digest mode", "unsubscribe", etc. Your individual option page is in the format - http://www.cheshirecat.net/mailman/options/intp/Your@Email.Address.Here It is considered bad form to send your unsubscribe request to the list. It is, however, acceptable (but not required) to send a brief message to the list announcing your impending departure. Be sure to save the introductory messages you receive when you subscribe, so you have the latest information on how to do all this. 1.18 How active is the list? During the first three months of 1996, nearly 7200 messages were sent to the list. This is about 80 messages per day. At that time there were about 175 subscribers, 145 of whom posted at least once. During the first four months of 1997, nearly 15000 messages were sent to the list. This is over 120 messages per day. Near the end of May 1997, there were 149 subscribers. 1.19 Who are the subscribers to the list? For an up-to-date list of subscribers, open the URL - http://www.cheshirecat.net/mailman/listinfo/intp Note that the list server will only reply to such requests from current subscribers. On the each month, a (very long) message is posted giving brief personal information about many of the (present and former) subscribers. This has become known as the "bio list" or the "personal description list." 1.20 Who started the list? The Founder of the INTP Mailing List is David Loewenstern [loewenst@paul.rutgers.edu]. David writes: I started the list. It was based upon pre-existing lists for other types, and the proximal cause was a discussion in alt.psychology.personality complaining about the lack of an INTP list, culminating in a joke (from Joe Butt, I think) that no such list could exist because INTPs could never agree whether it should really be called a "list" or a "group", etc. I decided to take the bull by the horns. According to David, this occurred in October 1993. At its inception the list was a manual list, with each subscriber maintaining a group address (distribution list) for all other subscribers. The Father of the list as we know it today is Scott Pallack [skybird@wizard.com] (formerly "Dad," then "ex-Dad," now "ex-ex-Dad"). Scott grew tired of paging through the distribution list with a 2400 baud modem, and he did not want to manually update a group address with each new subscriber. In November 1993, he automated the list. At that time, both Scott and the computer serving the list (satelnet.org) resided in Florida; the sysop of satelnet.org, Yanek Martinson [yanek@satelnet.org], was instrumental in the automation. In March 1995, Kim Justice [justicek@edge.ercnet.com] (also formerly "Dad," now "ex-Dad"), graciously assumed responsibility for the list, and Dan Jacobs [danielj2@wizard.com] ("Dan"), offered space for the list on his machine in Las Vegas, where the list, Scott, and Dan (but not Kim) live today. In July 1996, with a surprisingly swift but peaceful transfer of power, Kim yielded list ownership responsibilities to the list owner, Beth Coleman [intplist@mindspring.com] ("Evil Step-Mom"). 1.21 Can I get back posts from the list? Archives of the INTP Mailing List are available at
http://www.cheshirecat.net/mailman/private/intp/ Since it is a private mailing list, participants are asked to keep this link private by not placing it in any publicly accessible web page. 1.22 Can I contact individual subscribers to the list? Yes. In fact, the list software is set up so that replies to posts put the _poster's_ name, not the list address, in the "To:" field by default (see question 1.11). This is done to encourage private communication among list subscribers and reduce list traffic about topics that have ceased to be interesting to the list as a whole but that some still want to discuss (see question 1.6). However, not everyone desires private communication with other subscribers, and no one is obligated to reply to unsolicited email. Therefore, your private message may go unheeded or you may receive a (possibly curt) return message asking you to stop. Please heed such a request; INTPs are, after all, introverts, and many are intensely solitary people. For some helpful discussions about dealing with unwanted email or combatting email harassment, see the following URLs: http://www.oitc.com/Disney/WhatToDo.html http://www.ii.com/internet/robots/ http://chat.carleton.ca:2001/help/help-mail/harassment.html 2 The INTP Personality 2.1 What is an INTP? An INTP is an Introverted iNtuitively Perceiving Thinker. INTPs prefer to take in information (_perceive_ reality) by using intuition rather than the five senses, and prefer to make decisions about that information (_judge_ reality) by using thinking (logic and reasoning) rather than by considering the effects of the decisions on other people. As Perceivers, INTPs prefer to use the perceiving function (iNtuition) to deal with the external world, and to devote the judging function (Thinking) to their internal world (see question 2.7). As Introverts, INTPs prefer this internal world; they are not enthused and energized by interacting with other people but by being alone. 2.2 What do you mean by "perceiving function" and "judging function?" These are terms from personality type theory. See section 3, particularly questions 3.3, 3.4, and 3.5, for information about this. 2.3 What are some of the personality characteristics of INTPs? The notions given in question 2.1 suggest a number of characteristics of the INTP personality. Since INTPs prefer to use their perceiving function to relate to the outside world, and since they perceive (gather information) intuitively, they can seem "absent-minded," "spaced out," "uninvolved," or "not all there" to people who are more strongly grounded in concrete sense perceptions. Yet, they often seem to have uncanny insights that less intuitive individuals do not have. Since they prefer to make decisions based on logic and reasoning, they can seem "cold," "impersonal," or "unemotional" to people for whom thinking and reasoning take less of a priority. However, they are frequently indomitable in arguments, able to marshall point after point in favor of their position. As Introverts, INTPs may seem like "loners" or "hermits" to many. But an INTP is usually quite content to be alone with his or her thoughts and mental ruminations. Indeed, since an INTP's preferred orientation is toward his or her internal world (Introversion), and since he/she uses her/his judging function (Thinking) in that internal world (the perceiving function being used in the external world), Thinking is the INTP's preferred, or _dominant_, function. (The INTP's perceiving function (iNtuition) is called the _auxiliary_ function, and is the second most preferred function.) Thus, thinking is an INTP's forte, and INTPs are always thinking. The raw material for these ceaseless thought processes comes from the intuitive insights that the INTP's perception supplies. INTPs build mental models of reality based on their intuitive perceptions. Only rarely--and reluctantly--do INTPs share what they are thinking, however (though the private and impersonal nature of the INTP Mailing List seems to have loosened many of their tongues; see question 1.18). Neither are they prone to act on their thoughts; with Thinking as their dominant function, they prefer instead to continually revise their mental models as their perceiving function supplies them with additional data. Thus, their external world tends to be unstructured (and, unfortunately, in some cases unaffected) by their thinking. Many mistakenly interpret the characteristic silence and inaction of INTPs as supercilious disinterest, intellectual snobbery, boredom, rudeness, aloofness, or lack of appreciation. It could be one or several of these, but more likely the INTP is deeply interested and involved mentally, busily thinking within his or her own personal and idiosyncratic context. An INTP, then, is constantly making logical, systematic judgements or decisions about information gleaned through leaps or flashes of intuition. As a result, an INTP is oriented toward the theoretical. They habitually seek to get "behind the scenes" of reality. They are "big picture" people; they are "possibility" people. In _Please Understand Me_ (see question 3.17), Keirsey and Bates write, The one word which captures the unique style of INTPs is _architect_ [sic]--the architect of ideas and systems as well as the architect of edifices. (p. 186) INTPs are generally adroit, natural, creative, and non-linear thinkers who accept few boundaries to their intellectual meandering. Although many display periods of manic intensity, compulsiveness, or coma-like behavior, underlying their seemingly intense, detached, distracted, gruff, and serious INTP persona is wonderment, child-like contemplation, and a generally playful irreverence. A former subscriber to the INTP Mailing List, Joe Butt [jabutt@sacam.oren.ortn.edu] has written a thoughtful portrait of the INTP, which can be read at http://sacam.oren.ortn.edu/~jabutt/profiles/intp.html Many of the references given in question 3.17 offer further, detailed, portraits of all the MBTI types. 2.4 Some of what I read describing INTPs seems to apply to me and some of it doesn't. What now? Often, one will read a portrait of his or her type and find material that fits and material that does not. No single description of a personality type can encompass all the nuances of that type. More importantly, no one INTP is the same as all other INTPs. Just as each human being is like each other human being in those characteristics that make him/her human, but has specific characteristics that set her/him apart as well, so each INTP is like each other INTP but is also a unique individual. In addition, not everyone is fully differentiated into just one type. Individuals may be of "mixed" type, whereby they do not manifest a clear preference for one or more of the type-determining characteristics. In this case, material from two or more type descriptions could apply to them. It is also possible for someone to "test" as an INTP but really to be another type. See question 3.7. 2.5 I seem to [insert observed behavior here] a lot. Is this typical of INTPs? There are a number of behaviors mentioned often enough on the list that it is reasonable to assume they are typical of INTPs. Frequently, new subscribers will express astonishment that there are others who do these things (see question 3.6). (However, people of the same personality type are neither clones nor--usually--twins, so not all INTPs necessarily exhibit all these behaviors. See also question 2.4.) 2.5.1 Observed behavior: [have a messy desk; keep stuff] INTPs usually seem to be "pack rats," at least to some degree. Many INTPs report having "messy" desks and/or living areas, often with piles of books and papers awaiting attention. (There can be _lots_ of books.) The INTP's desire to learn almost everything, together with the perceiving attitude that makes the INTP always open to new information, contribute to a reluctance to get rid of anything that might possibly be of value. Actually filing such material would impose a structure on it which might need to change "tomorrow." Where SOs, roommates, or coworkers are of a different type, the INTP often must accommodate foreign preferences by confining "true" manifestations of his/her personality to certain parts of the home or office. 2.5.2 Observed behavior: [be unscheduled; miss appointments] INTPs prefer an unstructured approach to living and to getting things done (see questions 2.3 and 2.8). They do not, therefore, do well with schedules. To an INTP, time is an open-ended entity that is allowed to unfold, not a resource to control. Many INTPs have learned to control at least a portion of their time, however, in order to function in the predominantly SJ world of which they are a part (see again question 2.8). Some can be quite successful at this. Nevertheless, the behavior is not their true preference. 2.5.3 Observed behavior: [bounce from one interest to another] INTPs tend to have a multitude of interests. This pertains not only to their work life (see question 2.8), but to other areas of their life as well. Hobbies, diversions, books to read, magazine subscriptions: the INTP may well have many of these, and may well change them like some people change clothing. Unfortunately, most INTPs have the dilemma of "so many interests, so little time," and are usually unable to satisfy their curiosity in more than a few of their areas of interest. Sometimes, because of a problem with making decisions (see question 2.5.5), an INTP is unable to choose which interests to pursue and risks a life of underachievement and boredom. 2.5.4 Observed behavior: [not complete projects as interests change] INTPs enjoy novelty and variety and they often lose interest in something once they "understand" it (see question 2.8). To them, the project has been "completed" and there is no need for further work to "implement" anything. Thus, raw materials for one project after another can pile up as an INTP develops an interest, "researches" it, begins gathering materials, "understands" it, and moves on to the next interest. 2.5.5 Observed behavior: [have difficulty making decisions] INTPs prefer life to be unstructured, and they remain open to new data (see questions 2.3 and 2.8). Because of this, they often resist (frequently without conscious awareness) finalizing, or "coming to closure," on an endeavor. This can lead to putting off even important decisions, and sometimes can bring about an actual fear of decision- making. 2.6 How common is the INTP type? According to Keirsey and Bates in _Please Understand Me_ (see question 3.17), only about 1 in every 100 people is INTP. Using somewhat different figures from Lawrence, _People Types & Tiger Stripes_ (see question 3.17), the figure could be as high as about 2.5 in every 100 people. In any case, it is clear that INTPs are rare, which probably accounts for the sense of alienation many INTPs report. The INTP type is slightly more common among males than among females. See also question 3.9. 2.7 What types are best for relationships with INTPs? This question is asked often on the list, because INTPs seem to have special difficulty forming relationships of any kind. Their tendency to ignore or misinterpret common social cues hampers entry into many social milieus, and their disdain for the social lubricant of "small talk" prematurely betrays their intensity (an intensity which, in the initial stages of a relationship, can be disconcerting and can make them appear unapproachable, even arrogant). Their characteristic emotional unexpressiveness makes maintaining close personal relationships a challenge for partners who need feedback and intimacy. But don't panic. Nearly all types have been mentioned at one time or another as a good (or a bad) match for INTPs, and, as with many other topics on the list, discussion about good matches takes a different direction every time the question is raised. INTPs have formed successful relationships with all types (and have had predictable difficulties with all types). You will find advocates for most types. More significantly, however, this is the wrong question when it comes to choosing an SO. Common goals and values, similar interests, and similar world views or tolerance and respect for diversity are more important than type. What matters is how couples think of each other and how important their differences are _to them_. Can they tolerate the differences, adjust to them, or even be attracted by them? Some commonly mentioned "trigger points" for problems in relationships with INTPs: Will the SO rearrange the INTP's desk or clean up (e.g., store books) but the INTP prefers some "ordered chaos?" Will the SO expect the INTP to participate in big family gatherings and join in social chit-chat late into the night? Will the SO understand the INTP's need for solitude to recharge and not see it as an attempt at avoidance? Will the SO criticize the INTP for being too withdrawn, too unempathetic, too disorganized, too pedantic, etc.? In _16 Ways to Love Your Lover_ (a very good book on type and relationships; see question 3.17), Otto Kroeger & Janet M. Thuesen advise INTPs to speak from the heart. When INTPs try to use thinking to express love, the meaning can get lost in the translation. They should share the fact that they _feel_ love, not only _understand_ it. INTPs are slow to communicate, but this does not mean that things are not simmering and smoldering inside. Although they appear aloof, snobbish, and disinterested in small talk at first, they are intriguing and, when comfortable, can be engaging conversationalists. At more advanced stages of a relationship, their rich imagination can "create an inferno of explosive and expressive affections" (p. 253). If an INTP finds that none of the non-INTPs he/she meets seems compatible, there may be some comfort in knowing that the list has spawned an occasional INTP-INTP relationship, and includes an INTP couple who love to discuss their happy and successful 28 year marriage and children. (But don't get the wrong idea about why we're here: The purpose of the list is eclectic and desultory discussion, not matchmaking!) It is interesting to note that even the so-called experts disagree and are often inconsistent on this topic. Keirsey and Bates, on p.17 of _Please Understand Me_ (see question 3.17), warn that mismatches in the perceiving functions (Sensing and iNtuition, the functions by which we take in information and by which, therefore, our world view is influenced; see question 3.4) are "the source of the most miscommunication, misunderstanding, vilification, defamation, and denigration." But later, in Chapter III, they claim people are attracted to their exact opposite. Kroeger & Thuesen, on the other hand, on p. 27 of _16 Ways to Love Your Lover_, claim that the most significant source of interpersonal tension is the difference between the Perceiving and Judging attitudes (P vs J). These attitudes determine whether someone prefers to use their perceiving (information- receiving) function (S or N) or their judging (information-processing) function (T or F) in dealing with their external world (see question 3.5). Perceivers, who prefer to use their judging function on their _internal_ world, are usually easy-going and wait-and-see towards _external_ circumstances, while Judgers, who prefer to use their judging function on their external world, are decisive and resolute towards external circumstances. To Perceivers, Judgers can seem stubborn, unyielding, non-adaptable. To Judgers, Perceivers can seem flighty, indecisive, unorganized, spaced-out. In a relationship, these differences can escalate from minor irritants to major conflagrations. On p. 83 of _Portraits of Temperament_ (see question 3.17), Keirsey briefly re-evaluates the best romantic matches for each type under a new typing system of his own creation. There, he claims that the best match for the "Engineer" type (which correlates with the Myers-Briggs NTP type) is the "Idealist" type (which correlates with the Myers-Briggs NF type). He argues that Idealists are aware of and attracted to the Engineer's ingenuity and are very encouraging of it, and that the Idealist serves as a source of endless mystery to the rational nature of the Engineer. He goes on to allow that Engineers can safely marry some of the other types but it will require more personal adjustments. From the other perspective, on p.94 of _Portraits of Temperament_ Keirsey claims that the best match for the "Mentor" type (which correlates with the Myers-Briggs NFJ type) is the NTP Engineer. He argues that Mentors, while they may mate successfully with any of the types, face fewer adjustments when they mate with Engineers. Engineers value a Mentor's "appreciation and encouragement, their compassion, and their vivacity; while Mentors appreciate being needed for something they have in plenty." Clearly, the question is still open and unresolved. It will probably (and perhaps rightly) remain so. 2.8 What jobs or career fields are best for INTPs? The preferred function for INTPs is Thinking, oriented towards the inner world of ideas, concepts, and mental models (see question 2.3). To satisfy this preference in their work, INTPs require jobs where their primary responsibility is to apply their thinking to underlying principles, abstract notions, and other theoretical structures. However, these structures need not be scientific hypotheses or involve technical speculation; depending on the specific interests of the INTP, they can be plans, procedures, methods, or explanations of almost any sort. INTPs formulate these, analyze them, generalize them. The results of their quiet thinking can speak loudly to those who care to listen. Because of their introversion and their intuitive perception (see again question 2.3), INTPs function best in situations where they are not required to have much contact with other people and where they need not exercise strong "sensing" elements. They are not necessarily interested in or concerned with tangible products, except insofar as these exemplify and embody their ideas and theories. Therefore, they tend to avoid pragmatic jobs. Since they prefer the "big picture," the overall view, they usually do not enjoy detail work unless it can be seen as contributing to some larger task or goal that is important to them. As Perceivers, INTPs prefer openness instead of closure in their external world. Thus, they favor work situations where they can have a great deal of autonomy. Compulsory tasks, deadlines, and schedules are distasteful to them. They enjoy novelty and variety rather than routine, repetitive assignments. An INTP's involvement with something typically lasts until the INTP understands it or until her/his interests shift to something else. For this reason, INTPs usually do not fit well into jobs that ask for a "Team player who can take an idea from conception to production." Such jobs, in fact, require almost the very antithesis of the INTP personality. Because of their tendency to change from one pursuit to another to another, INTPs have been called ". . . the quintessential Jacks (or Janes) of all trades and masters of none" (Kroeger and Thuesen, _Type Talk_, p. 246). Unfortunately, in the conventional world of work most of an INTP's personality traits are seen not as assets but as liabilities, and many INTPs appear to have difficulty finding compatible employment. Numerous INTPs on the list report "job-hopping" from one position or career to another as their interests change, or in pursuit of "something" they want or like to do. Some attain satisfaction in this way, but not all INTPs can make repetitive job changes. To earn a living in a society which is predominantly SJ, INTPs often need to assume foreign personas for at least part of their work day. Sometimes this is done at great psychological cost. Still, there are INTPs who have found occupational happiness. Many INTPs enjoy working with computers, and a great number of subscribers to the list are programmers, analysts, system administrators, or computer consultants. INTPs who have the requisite credentials often find satisfaction in the world of academia. Those who are not technically inclined tend to other lines of work involving complex systems, such as the law or psychology. INTPs can even be content as artists, writers, or musicians; in each of these fields, their faculties for dealing with intellectual intricacy can be put to use and challenged. On the INTP Mailing List there are academics, lawyers, psychologists, artists, writers, and musicians. There is also at least one stockbroker. A few INTPs may choose to hold routine jobs that require little thought and effort, to earn a subsistence income and devote their free time to their "true" calling. This can be a viable option, at least for a while (for example, it is well known that Albert Einstein--an archetypal INTP- -developed his Special Theory of Relativity while holding a routine civil service job in the Swiss Patent Office); as family responsibilities increase, however, there can be both less free time and a need for more than subsistence wages. Some INTPs have reported success functioning in totally foreign environments by treating the many rules and constraints as a complex "game." It would seem that there is no "best" career or job for INTPs, and few that are even reasonably suited. Perhaps the best advice is from Joseph Campbell: "Follow your bliss." An INTP should not avoid a job he or she might like simply because it seems unsuitable from a type standpoint. Yet, neither should he/she expect to be able to exercise all her/his gifts and to find complete fulfillment in only a conventional occupation. 2.9 Are there any famous INTPs? Determinations of another's type are usually speculative (see question 3.14). However, some famous INTPs likely include Charles Darwin, Rene Descartes, Albert Einstein, Sir Isaac Newton, Blaise Pascal, and Socrates. Joe Butt's portrait of the INTP (see question 2.3) contains a larger list. 3 The Myers-Briggs Type Indicator (MBTI) 3.1 What is the Myers-Briggs Type Indicator? The Myers-Briggs Type Indicator (MBTI) is a psychological instrument developed by Katharine Briggs and Isabel Briggs Myers to help individuals determine their particular personality type. 3.2 What do you mean by "personality type?" An individual's "personality" is his or her overall pattern of behavior. This includes internal behavior, such as thoughts and feelings, and external behavior, such as ways of acting in certain circumstances or ways of dealing with various people. Although each of us is a unique individual, humans have been observing, characterizing, and grouping other humans based on behavior since ancient times. This is a natural activity that helps us make manageable sense out of the great variety of behavior we encounter among the people we meet. For example, in the fifth century BC, the Sicilian philosopher Empedocles spoke of four bodily fluids, or "humors," which he believed influenced people to be one of four kinds of person: melancholic, phlegmatic, choleric, or sanguine. Today, some people find the Enneagram helpful in understanding themselves or others. Many of us know individuals of whom we say, "He is very outgoing," or "She is the meanest person I've ever met." Any such characterization or grouping can be said to be a system of personality typing. In the first half of the twentieth century, the great Swiss psychiatrist and psychoanalyst Carl Jung wrote extensively about this. Building on Jung's work, Katharine Briggs and her daughter Isabel Briggs Myers developed their concept of sixteen personality types and created a simple written instrument, the Myers-Briggs Type Indicator, to help an individual determine his or her type. 3.3 How does this "Indicator" work? What is the theory behind it? Human beings are constantly taking in and processing information. In Jungian type theory, the action or "function" of our personalities by which we take in information, or _perceive_ reality, is called the "perceiving" function, and the action or function of our personalities by which we process information, or _judge_ (make decisions about) reality, is called the "judging" function. Jung maintained that humans have two fundamentally different ways of taking in information (two different perceiving functions), and two fundamentally different ways of processing information (two different judging functions). The central tenet of type theory is that each person develops a preference for using one of the two perceiving functions and for using one of the two judging functions. Individuals with similar preferences behave in similar ways; individuals with different preferences behave in different ways. 3.4 What are the different perceiving and judging functions? The two perceiving functions are "Sensing," in which one relies primarily on one's five senses to take in information, and "iNtuition," in which one relies primarily on some "hunch" or "sixth sense." Those who prefer the "Sensing" function to receive information are designated "Sensors;" those who prefer the "iNtuition" function to receive information are designated "iNtuitives." The two judging functions are "Thinking," in which one relies primarily on logic and reasoning to make decisions about the information one has perceived, and "Feeling," in which one relies primarily on the effects one's decisions will have on other people to make decisions about the information one has perceived. Those who prefer the "Thinking" function to process or make decisions about this information are designated "Thinkers;" those who prefer the "Feeling" function to process or make decisions about this information are designated "Feelers." Thus, each individual falls into one of four groups or categories, and is identified by the letters S or N and T or F: ST, SF, NT, or NF. 3.5 But this gives only two letters for each "type," not four, and only four "types," not sixteen. Where do the other letters come from? Jung also noticed that most people have one of two preferences for social interaction. Those who are enthused and energized by being with people he called "Extraverts;" Extraverts are uncomfortable when they are alone and spontaneously seek the company of others. Those who are enthused and energized by being alone or with a few close friends he called "Introverts;" Introverts are uncomfortable when they are with other people and spontaneously seek solitude. Using the letter E to designate Extraverts and the letter I to designate Introverts, the four large groups become eight: EST, IST, ESF, ISF, ENT, INT, ENF, INF. Myers and Briggs realized that most people prefer to use one of their information-related functions--either their information-receiving function (S or N) or their information-processing function (T or F) in dealing with their external world. Those who prefer to use their perceiving function to deal with their external world they called "Perceivers" and designated by the letter P; those who prefer to use their judging function to deal with their external world they called "Judgers" and designated by the letter J. This gives a total of sixteen groups, or types, into which most people can fit. Arranged in a (traditional) "type table," the sixteen types are: ISTJ ISFJ INFJ INTJ ISTP ISFP INFP INTP ESTP ESFP ENFP ENTP ESTJ ESFJ ENFJ ENTJ 3.6 This all sounds like a lot of psychological mumbo-jumbo to me. Is there any validity to it? The MBTI is a widely respected psychological instrument that is extensively used by government, business, and academic organizations, as well as by counselors, psychologists, and psychiatrists in private practice. While there are other "systems" for categorizing personality (see question 3.17), and the MBTI does have its critics, no other "system" seems to have its interest and appeal. Frequently on the INTP Mailing List, a newcomer will express surprise (and, often, relief) that others on the list seem so like him or her (occasionally after years of feeling alienated from "mainstream" society). Or a subscriber will report that learning about the MBTI finally allowed him or her to realize there is nothing "wrong" with the way he or she is. Ultimately, each of us must decide for ourselves how valid are the insights into our personality offered by the MBTI. 3.7 Doesn't all this "categorizing" and "grouping" stereotype people, and limit them based on someone else's preconceived ideas? It is impossible to conceptualize knowledge in any field without some categorizing and grouping of the entities involved. As a field develops, the results put forth by early workers are subject to amendment or correction by others, until, gradually, the phenomena described are trusted to accurately represent reality. In typology, the reactions of many who have achieved insights into their own personalities through the MBTI serve to bear out the theory. More importantly, however, the MBTI never presumes to be anything approaching a "final" answer to the mysteries of human personality. Each person who takes the inventory is encouraged to read several or all of the type descriptions to validate the instrument's results. And each is told, explicitly, "You are the final arbiter of your own type." That is, if the MBTI "says" you are INTP but you, after sufficient research into and reflection on other types, feel that another type fits you better, then you are free to decide you are that other type. MBTI results can be affected by many factors, and should be considered one component in an entire constellation of components that reveal one's psychological type. 3.8 Does being a certain type mean my behavior is predetermined? The Myers-Briggs Type Indicator is an _indicator_; it is not an absolute determiner of someone's personality and behavior. Furthermore, the MBTI indicates _preferences_, i.e., how one likes to behave. Anyone at anytime can choose to use an opposite preference. Using an opposite preference is difficult and psychologically exhausting, however. It cannot be done constantly. To understand this, sign your name with the hand you normally use. Then, below the first signature, sign your name with the other hand. Although you can use your non-preferred hand, it takes effort (for some, much effort). And the result is not as good. 3.9 Which type is most common? According to Keirsey and Bates in _Please Understand Me_ (see question 3.17), the approximate percentages of people who have the various types are: ISTJ - 6% ISFJ - 6% INFJ - 1% INTJ - 1% ISTP - 5% ISFP - 5% INFP - 1% INTP - 1% ESTP - 13% ESFP - 13% ENFP - 5% ENTP - 5% ESTJ - 13% ESFJ - 13% ENFJ - 5% ENTJ - 5% According to Lawrence, _People Types & Tiger Stripes_ (see question 3.17), p. 39, the distribution of preferences is: E - 70% I - 30% S - 70% N - 30% T - 60% F - 40% among males T - 40% F - 60% among females J - 55% P - 45% Clearly, INTPs are among the rarest of the types. 3.10 Which type is best? The type that you are [big grin]! In fact, all of the types are worthwhile; there is no one best type. MBTI recognizes, accepts, and celebrates the diversity among human beings. This philosophy is reflected in the title of Isabel Briggs-Myers' book, _Gifts Differing_ (see question 3.17). 3.11 I sometimes see additional symbols used in someone's type designation. What do these mean? On the INTP Mailing List, some conventions are used for showing the strengths of one's various preferences. A lower-case letter denotes a weak preference relative to the other preferences; an asterisk _after_ a (capitalized) preference denotes an extremely strong preference relative to the other preferences. This system is set forth every two weeks in the biographical list ("bio list") posting (see question 1.19). Thus (from the biographical list), InTP: weak N preference and moderate to strong preferences for I,T,P IN*TP: extremely strong preference for N IxTP: borderline N/S score; not clearly N or S 3.12 How does one develop a "type?" Is type inherited? There are different views on this issue. Most authorities believe that one's type develops as a combination of genetic factors and upbringing. 3.13 How do I take the MBTI? How do I find out my "type?" The MBTI is published by Consulting Psychologists Press, Palo Alto, CA. To prevent inappropriate, inaccurate, or unethical uses of the instrument, only individuals who meet certain qualifications are permitted to purchase it. Therefore, you must find such a person to administer the MBTI to you. Many psychologists and counselors can do this, and there are others who have the required training. For help finding someone near you, contact the Association for Psychological Type: Association for Psychological Type APT Headquarters 9140 Ward Parkway Kansas City MO 64114 (816) 444-3500 Fax: (816) 444-0330 E-Mail: staff@aptcentral.org http://www.aptcentral.org/aptfaq.htm There are other "personality indicators" that can help you determine your type. One of these is the "Keirsey Temperament Sorter," available in the book _Please Understand Me_ (see question 3.17); an on-line version can be found at http://sunsite.unc.edu/jembin/mb.pl. Although not as thorough or accurate as the MBTI itself, many people have used it and the type portraits given in the book to determine their type. Another instrument is the "Duniho and Duniho Life Pattern Indicator" (DDLI), which is only available on-line and can be found at DDLI.html As with the MBTI itself, users of these related instruments should remember the cardinal rule of personality typing: You are the final arbiter of your own type. 3.14 How can I find out someone else's type? The best way to find out another person's type is to ask them. But this is not always feasible. Some people whose type we might like to know are not familiar with MBTI, and some people who know their type do not wish to share it. (It is important to respect the wishes of those who do not care to give this information.) Some people we cannot ask: what was Abraham Lincoln's type, for example? It is possible, though, to _estimate_ another person's type by carefully observing their behavior (because personality manifests itself in behavior). However, we can only see another's external behavior, not their internal behavior (see question 3.2). Furthermore, unless their behavior results from well-developed type preferences, we might not make a correct determination; someone with a weak preference for introversion or extraversion, for instance, might be mistaken for their opposite type. And it is important to remember that the circumstances under which we observe a person might cause them to behave differently than they would prefer to behave, so that we might not be seeing their "real" self. Thus, by observing someone we can pick up useful clues to their personality type, but we can never be absolutely sure of it unless they themselves tell us (and sometimes not even then: occasionally, someone has a difficult time deciding on their _own_ type). Perhaps the easiest characteristics to discern are introversion versus extraversion and judging versus perceiving. Someone who often attends parties and who obviously enjoys other people is almost certainly an Extravert, while an individual who is usually seen alone in a corner with a book or magazine is probably an Introvert. Judgers, who use their judging (decision-making) function on their external world, typically impose some sort of noticeable structure on that world by their decisions. Often, this structure can be seen in their physical surroundings or in their use of resources (such as time and money). Thus, someone whose work and/or living areas are "neat," "tidy," or organized is probably a Judger, as is a person who commonly seeks finality or completion ("closure") in their external activities. Judgers also are usually more concerned about "rules" and about observing them, and about their personal appearance; a precise dresser is more likely to be a Judger. Perceivers, who use their perceiving (information-gathering) function on their external world, reserve decision-making for their internal world. As a result, Perceivers take a "live and let live" attitude toward their external world and are frequently regarded as "disorganized" or "messy." Someone whose desk is replete with piles of paper, magazines, and books, who seems casual and unconcerned about time, money, personal appearance, or rules, is probably a Perceiver. (Many Perceivers, however, while maligned as "disorganized" because of their external behavior, can be quite organized in their internal world of thoughts and ideas. This is particularly true of INTPs.) Determining the other attributes is more challenging, and requires a good knowledge of the other person and of type theory. Otto Kroeger and Janet M. Thuesen discuss determining other peoples' types in their very helpful book, _Type Talk_ (see question 3.17). 3.15 Are there any famous people whose types are known? A list of famous individuals (real and fictional) of various personality types is available at famous.types But see question 3.14. 3.16 I have not taken an "official" MBTI. Can I be on the INTP Mailing List? Yes. See questions 1.4 and 1.5. 3.17 I want to find out more about all this. Can you list some additional [insert category of reference here] on type? 3.17.1 Category of reference: [books] Benfari, Robert, with Jean Knox. _Understanding Your Management Style: Beyond the Myers-Briggs Type._ Lexington, MA: Lexington Books, 1991. Bridges, William. _The Character of Organizations: Using Jungian Type in Organizational Development._ Palo Alto, CA: Consulting Psychologists Press, Inc., 1992. Briggs-Myers, Isabel, and Peter Myers. _Gifts Differing._ Palo Alto, CA: Consulting Psychologists Press, Inc., 1980. Corlett, Eleanor S., and Nancy B. Millner. _Navigating Midlife: Using Typology as a Guide._ Palo Alto, CA: CPP Books, A Division of Consulting Psychologists Press, Inc, 1993. Jeffries, William C. _True to Type: Answers to the Most Commonly Asked Questions About Interpreting the Myers-Briggs Type Indicator._ Norfolk, VA: Hampton Roads Publishing Company, Inc, 1991. Jung, C.G. _Psychological Types_. In _Collected Works_, vol. 6, translated by R. F. C. Hull. Princeton, NJ: Princeton University Press, 1976. Keirsey, David, and Marilyn Bates. _Please Understand Me: Character & Temperament Types._ Third edition. Del Mar, CA: Prometheus Nemesis Books, 1978. Keirsey, David. _Portraits of Temperament_. Second edition. Del Mar, CA: Prometheus Nemesis Books, 1991. Kroeger, Otto, and Janet M. Thuesen. _16 Ways To Love Your Lover: Understanding the 16 Personality Types So You Can Create a Love That Lasts Forever._ New York: Delacorte Press, Bantam Doubleday Dell Publishing Group, Inc., 1994. Kroeger, Otto, and Janet M. Thuesen. _Type Talk at Work: How the 16 Personality Types Determine Your Success on the Job._ A Tilden Press Book. New York: Delacorte Press, Bantam Doubleday Dell Publishing Group, Inc., 1992. Kroeger, Otto, and Janet M. Thuesen. _Type Talk: The 16 Personality Types That Determine How We Live, Love, and Work._ A Tilden Press Book. A Delta Book. New York: Dell Publishing, a division of Bantam Doubleday Dell Publishing Group, Inc., 1988. Lawrence, Gorden. _People Types & Tiger Stripes: A Practical Guide to Learning Styles._ Second edition. Gainesville, FL: Center for Applications of Psychological Type, Inc., 1982. Quenk, Naomi L. _Beside Ourselves: Our Hidden Personality in Everyday Life._ Palo Alto, CA: CPP Books, A Division of Consulting Psychologists Press, Inc, 1993. 3.17.2 Category of reference: [Internet resources] Discussions of various systems for categorizing personality take place in the USENET newsgroup alt.psychology.personality. A good entry point into World Wide Web resources on type is the home page for the Association for Psychological Type, at http://www.aptcentral.org A wealth of information on type, including archives of the postings to alt.psychology.personality, is available by anonymous ftp from sunsite.unc.edu, in the directory /pub/academic/psychology/alt.psychology.personality This same information is available on the World Wide Web at http://sunsite.unc.edu/pub/academic/psychology/alt.psychology.personality For a readable set of type descriptions, see http://sacam.oren.ortn.edu/~jabutt/profiles/profiles.html