However, Jung’s work has also contributed to mainstream psychology in at least one significant respect. He was the first to distinguish the two major attitudes or orientations of personality – extroversion and introversion. He also identified four basic functions (thinking, feeling, sensing, and intuiting) which in a cross-classification yield eight pure personality types.
Psychologists like Hans Eysenck and Raymond Cattell have subsequently built upon this. As well as being a cultural icon for generations of psychology undergraduates Jung therefore put forward ideas which were important to the development of modern personality theory.
This is the conclusion of Saul Mcleod's article which Oubliette cited, showing Jung's contributions to mainstream psychology which are far from trivial; extroversion, introversion and personality types utilised by Briggs and Myers.