For 10 points, name this concept from psychology, the characteristics that make individuals different.
The notions of "A" and "B" were linked to the occurrence of heart disease through one theory of this concept. David Keirsey developed a test to assess this concept based around the roles of the artisan, the guardian, the idealist, and the rational. Hans Eysenck developed the P-E-N model for classifying this concept while attempting to link it to the idea of inheritance. Raymond (*) Cattell developed a sixteen-factor model to measure it, which included such dimensions as "apprehension" and "vigilance." Lewis Goldberg was among those who developed the so-called OCEAN model of this concept, which is characterized by five factors. The Myers-Briggs Indicator test can be used to assess this concept, much work on which was done through analysis of traits by Gordon Allport. For 10 points, name this concept from psychology, the characteristics that make individuals different.
The notions of "A" and "B" were linked to the occurrence of heart disease through one theory of this concept.
personality [or temperament]