MBTI info obtained from HERE.
INTROT/F -- Thinking/Feeling. Feeling types are compassionate, sensitive people who put the happiness of people first. Thinking type are very logical, independent, accomplished, and know how to do things. However, you could also say Thinking types are heartless, arrogant jerks who treat people like machines, and Feeling types are insipid, dependent, conflict-avoiding basket cases.
If you've read my previous thread in this section, you should know that research has found a connection between T/F and the Big Five trait Agreeableness (A), but I think it's really mixed up with Neuroticism (N) too. I was gonna go into the judging functions, but I'll save that for later to keep this post short enough so as to not scare anyone off.
Dissecting the Definition
Within the above quoted definitions, I see a mix of mostly A and some N (Neuroticism, not iNtuition in this post) that I will indicate by putting the letters in parentheses. I will indicate a lack of A and N for T types with minus signs following the letters.
Feeling types are compassionate (A), sensitive people (N) who put the happiness of people first (A). Thinking type are very logical (N-), independent (A-), accomplished (generally A- with Conscientiousness denoted by C and extroversion), and know how to do things (C). However, you could also say Thinking types are heartless (A-), arrogant (C) jerks who treat people like machines (A-), and Feeling types are insipid (A and N-), dependent (A), conflict-avoiding (A with one element of introversion) basket cases (N).
Apparently, feelers are a mix of mostly A with a little N, and thinkers are A-, N-, and C (although, I think conscientiousness is a perfect match for J and shouldn't have a thing to do with T and F).
Finally, I will discuss examples of people who are not A and N or A- and N- together. It helps to realize that A is a trait that only shows itself when interacting with people or animals and N is your capacity for negative emotions. Lack of negative emotions doesn't mean happy and jubilant, but simply lacking negative emotions.
I'm an example of someone A and N-. I'm compassionate and tend to put the happiness of other people first, but strangely, enough, I'm also insensitive. I'm insipid, dependent, and conflict-avoiding. My logical N- side causes me to value logical accuracy and sometimes can get ahead of my Agreeableness. I'll logically explain to you that you're wrong in the most agreeable manner possible, and I won't take it bad if you still don't agree.
My mom is someone who is A- and N. This really makes for a terrible combination when you have someone who experiences the fears, anxieties, worries, depression, self-consciousness, and anger associated with N and the welcoming of conflict, greater emphasis on one's own needs, and distrust associated with A-. If this type of person is worried or afraid, escaping these emotions are more important to them, than what's beneficial to others. My mom is now overcome with fear that the cat is going to get hurt by going outside to play. So she thinks it's acceptable to keep the cat inside all the time no matter how much he whines to go out and never mind how much boredom and frustration he may be experiencing. Although my mom is A-, she is not very logical at all because she's N.