ISTJ

ISTJ (Introverted Sensing Thinking Judging) is one of the sixteen personality types from personality type systems based on C.G. Jung, which best known are the Myers-Briggs Type Indicator (MBTI), Keirsey Temperament Sorter and Socionics.

Referring to Keirsey ISTJs belong to the temperament of the guardians and are called "Inspectors".

In Socionics ISTj's belong to the club of the pragmatists, the beta Quadra and are named "Inspector" or Maxim Gorki. Another notation for ISTj is LSI (which is an acronym for Logical-Sensory Intratim, referring to the cognitive functions).

Descriptor
ISTJs are traditional and 'by the book'. They are logical and hardworking.

MBTI cognitive functions

 * 1) Introverted Sensing (Si)
 * 2) Extroverted Thinking (Te)
 * 3) Introverted Feeling (Fi)
 * 4) Extroverted Intuition (Ne)
 * 5) Extroverted Sensing (Se)
 * 6) Introverted Thinking (Ti)
 * 7) Extroverted Feeling (Fe)
 * 8) Introverted Intuition (Ni)

Socionics cognitive functions

 * 1) [[Image:Socionics_logos.gif|15px]] introverted thinking (Ti)
 * 2) [[Image:Socionics_factor.gif|15px]] extroverted sensing (Se)
 * 3) [[Image:Socionics_relatio.gif|15px]] introverted feeling (Fi)
 * 4) [[Image:Socionics_intueor.gif|15px]] extroverted intuition (Ne)
 * 5) [[Image:Socionics_emoveo.gif|15px]] extroverted feeling (Fe)
 * 6) [[Image:Socionics_sensus.gif|15px]] introverted sensing (Si)
 * 7) [[Image:Socionics_profiteor.gif|15px]] extroverted thinking (Te)
 * 8) [[Image:Socionics_tempus.gif|15px]] introverted intuition (Ni)