The readers of SQL ServerCentral work in a binary world, so why have just refer to three types when we can use a nice round binary number of sixteen.
petertuffin and Andrew Watson mentioned about the Myers-Briggs Personality Types.
There are 16 different personality types in the Myers-Briggs classification of Personality Types with one choice from each of the categories below being the strongest:
Attitudes: Extraversion (E) or Introversion (I)
Information Gathering: Sensing (S) or Intuition (N)
Decision Making: Thinking (T) or Feeling (F)
Lifestyle: Judging (J) or Perceiving (P)
ISTJ | ISFJ | INFJ | INTJ
ISTP | ISFP | INFP | INTP
ESTP | ESFP | ENFP | ENTP
ESTJ | ESFJ | ENFJ | ENTJ
Below are some resources to look at for more information about Myers-Briggs and there are online personality tests available; just google "Myers-Briggs personality test".
http://en.wikipedia.org/wiki/Myers-Briggs_Type_Indicator
An online personality test:
http://www.humanmetrics.com/cgi-win/JTypes2.asp
s/
INTP