Test 1; Test 2
Wiki define INTJ; Wiki define INTP
INTJ commentary 1; INTP commentary 1
INTJ commentary 2; INTP commentary 2
A recent conversation prompted me to revisit the Myer-Briggs spin on the Jungian theories of personality types. I used the first link above (one of the few free administrations - with all the inherent risks - that I was able to find on the internet) to determine that I was INTJ (which is what I recalled having been in the past). Of course, my scores indicated that I was leaning in that direction, without a clear abandonment of the other options (though taking it again a few days later made me fall 'distinctly' as an INTJ; this was likely influenced by a new interpretation of the questions, based on a broader understanding of what they were trying to get at, for better or worse; I can't say which is more accurate). This was further demonstrated as I read through the assessment on the second link and compared the definitions provided by Wikipedia (3rd and 4th links). The final kicker was reading the definitions in the fifth and sixth links (7, 8 are alternatives). Mel read the INTJ with me, and really saw a lot of me in what it was saying. Having compared the two, I am inclined to say that at a younger age, I acted much more like an INTP, but maturity, age, wisdom, responsibility, who knows what, has caused me to become more of an INTJ.
Here are some items from each of the profiles that Mel or I thought rang true (she hasn't read or commented on the INTP before posting). I am curious what you think of what I have identified, if there are other traits in the descriptions that I did not pull out that you think are very appropriate, and what type you are (test is really quick - 4 a or b questions, or 72 yes or no questions). I primarily pulled INTJ from the 5th link and INTP from the 8th.
INTJ:

-appear to project an aura of "definiteness", of self-confidence....is actually of a very specific rather than a general nature
-will be able to tell you almost immediately whether or not they can help you, and if so, how. INTJs know what they know, and perhaps still more importantly, they know what they don't know.

-endless capacity for improving upon anything that takes their interest
-unusual independence of mind, freeing the INTJ from the constraints of authority, convention, or sentiment for its own sake.
-trait combination of imagination and reliability
-Anyone considered to be "slacking," including superiors, will lose their respect
-take it upon themselves to implement critical decisions without consulting their supervisors or co-workers.
-scrupulous and even-handed about recognizing the individual contributions that have gone into a project, and have a gift for seizing opportunities which others might not even notice
-many also find it useful to learn to simulate some degree of surface conformism in order to mask their inherent unconventionality.
-While they are capable of caring deeply for others (usually a select few), and are willing to spend a great deal of time and effort on a relationship, the knowledge and self-confidence that make them so successful in other areas can suddenly abandon or mislead them in interpersonal situations
-little patience and less understanding of such things as small talk and flirtation
-usually extremely private people, and can often be naturally impassive as well, which makes them easy to misread and misunderstand
-Perhaps the most fundamental problem, however, is that INTJs really want people to make sense.
-assets in the interpersonal area are their intuitive abilities and their willingness to "work at" a relationship
-good substitute by synthesizing the probable meanings behind such things as tone of voice, turn of phrase, and facial expression
-those relationships which ultimately do become established with an INTJ tend to be characterized by their robustness, stability, and good communications
-value intelligence, knowledge, and competence, and typically have high standards in these regards, which they continuously strive to fulfill. To a somewhat lesser extent, they have similar expectations of others.
-mind constantly gathers information and makes associations about it
-insightful and usually are very quick to understand new ideas.
-adaptable enough to change things which aren't working well
-make decisions, express judgments, and put everything that they encounter into an understandable and rational system. Consequently, they are quick to express judgments. Often they have very evolved intuitions, and are convinced that they are right about things
-value clarity and efficiency
-not overly demonstrative of their affections, and is likely to not give as much praise or positive support as others may need or desire. That doesn't mean that he or she doesn't truly have affection or regard for others, they simply do not typically feel the need to express it.
INTP:

-world of theoretical possibilities
-see everything in terms of how it could be improved, or what it could be turned into
having the ability to analyze difficult problems, identify patterns, and come up with logical explanations
-seek patterns and logical explanations for anything that interests them
-able to be objectively critical in their analysis
-love new ideas, and become very excited over abstractions and theories
-hate to work on routine things - they would much prefer to build complex theoretical solutions, and leave the implementation of the system to others. They are intensely interested in theory, and will put forth tremendous amounts of time and energy into finding a solution to a problem with has piqued their interest
-very tolerant and flexible in most situations, unless one of their firmly held beliefs has been violated or challenged, in which case they may take a very rigid stance
-likely to be very shy when it comes to meeting new people. On the other hand, the INTP is very self-confident and gregarious around people they know well, or when discussing theories which they fully understand.
-no understanding or value for decisions made on the basis of personal subjectivity or feelings
-he or she may become overly critical and sarcastic with others.
-important that ideas and facts are expressed correctly and succinctly. They are likely to express themselves in what they believe to be absolute truths. Sometimes, their well thought-out understanding of an idea is not easily understandable by others, but the INTP is not naturally likely to tailor the truth so as to explain it in an understandable way to others
-have unconventional thought patterns which allows them to analyze ideas in new ways
-Precise about their descriptions, INTPs will often correct others (or be sorely tempted to) if the shade of meaning is a bit off. While annoying to the less concise, this fine discrimination ability gives INTPs so inclined a natural advantage as, for example, grammarians and linguists
-Mathematics is a system where many INTPs love to play, similarly languages
-Games NTs seem to especially enjoy include Risk, Stratego, and word games of all sorts
Well, I think that's me. Hope it was interesting/informative. Was it wordy enough for you?