title: Observations on the origins and current status of the ego assertive personality factor, U.I.16.
mesh_terms: D001824:Body Constitution; D004532:Ego; D004777:Environment; D005006:Ethnicity; D005163:Factor Analysis, Statistical; D005639:Frustration; D006801:Humans; D010551:Personality; D011581:Psychological Tests; D012649:Self Concept