The Myers-Briggs types are the most popular personality typology used today. They expand upon Carl Jung's psychological types and are broken down into four dimensions.
- Introverted(I) or Extraverted(E)
- Sensing(S) or Intuiting(N)
- Feeling(F) or Thinking(T)
- Judging(J) or Perceiving(P)
There are 16 possible combinations of these four dimensions that result in 16 possible types:
ISFJ, ESFJ, INFJ, ENFJ, ISTJ, ESTJ, INTJ, ENTJ, ISFP, ESFP, INFP, ENFP, ISTP, ESTP, INTP, and ENTP.
When a dimension is indeterminate for an individual the letter x is often used. For example, if an individual scores evenly on the Introverted/Extraverted dimension then an x is used for that dimension and the individual would be one of the following:
xSFJ, xNFJ, xSTJ, xNTJ, xSFP, xNFP, xSTP, or xNTP.
The x notation may also be used when talking about only certain dimensions (e.g., individuals with N and P might be referred to in general as xNxP to indicate that the IE and FT dimensions are irrelevant to the discussion).