Primaries or second-order factors: a critical consideration of Cattell's 16 PF battery.
D001007:Anxiety; D005120:Extraversion, Psychological; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D007439:Introversion, Psychological; D008297:Male; D010555:Personality Inventory; D011594:Psychometrics; D012649:Self Concept