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  1. B. Michael Thorne

Published Online: 30 JAN 2010

DOI: 10.1002/9780470479216.corpsy0468

Corsini Encyclopedia of Psychology

Corsini Encyclopedia of Psychology

How to Cite

Thorne, B. M. 2010. Introversion-Extraversion. Corsini Encyclopedia of Psychology. 1.

Author Information

  1. Mississippi State University

Publication History

  1. Published Online: 30 JAN 2010


Carl Jung coined the terms introversion and extraversion to refer to two different psychological attitudes. By introversion, Jung meant a turning inward of the libido (psychic energy), whereas extraversion referred to a directing outward of the libido. Note that either term can be spelled with an “o” or an “a” (that is, either as above or as intraversion and extroversion). Although inconsistent, introversion and extraversion are the spellings used with the Myers-Briggs Type Indicator®(MBTI®) instrument, which is a popular personality assessment tool based on Jung's type theory.


  • Carl Jung;
  • myers-briggs type indicator (MBTI);
  • psychological types