Literary works, art forms, automatic writings, doodles, handshakes, voice patterns, body gestures, handwriting, gait
Cattell's divisions of traits
Common Traits
Unique Traits
Source Traits & Surface Traits
Temperament
Motivation
Ability
Cattell's multifaceted approach yielded 35 primary, or first-order, traits. 23 characterize the normal population and 12 measure the pathological dimension
Cattell's 16 personality factors is the largest and most frequently studied of the normal traits and is found on the 16 PF Scale
NEO-PI yields scores on only five personality factors
Correlation coefficient
A mathematical procedure for expressing the degree of correspondence between two sets of scores
Factor analysis
Can account for a large number of variables with a smaller number of more basic dimensions called traits
Traits
Factors that represent a cluster of closely related variables
Unipolar traits
Scaled from zero to some large amount (ex: height, weight, intellectual ability)
Bipolar traits
Extend from one pole to an opposite pole, with zero representing a midpoint (ex: introversion vs. extraversion, liberalism vs. conservatism)
Orthogonal rotation
Usually results in only a few meaningful traits
Oblique method
Preferred by Cattell, ordinarily produce a larger number of traits
The Five Factor Model (FFM) started with three factors: N (Neuroticism), E (Extraversion), and O (Openness to Experience)