- Does socializing for three hours drain your energy? Yes (I - Introverted) or No (E - Extraverted).
- Do you think before you speak? Yes (N - Intuitive) or No (S - Sensing).
- Do you talk a lot about emotions? Yes (F - Feeling) or No (T - Thinking).
- Are you bothered by missing schedules/deadlines? Yes (J - Judging) or No (P - Perceiving).
Jam those four letters together and that should be your type. For a more comprehensive approach to determining your type, try:
http://www.socionics.com/advan/tests.html (Socionics result)
http://www.humanmetrics.com/cgi-win/jtypes2.asp (MBTI result)
More on the differences between Socionics and MBTI later...