A definitive, authoritative and up-to-date resource for anyone interested in the theories, models and assessment methods used for understanding the many factes of Human personality and individual differences. Volume 1: Personality Theories and Models deals with the major theoretical models underlying personality instruments.

Psychophysiological and Biochemical Correlates of Personality

Psychophysiological and biochemical correlates of personality

The degree of activation, as shown by the writer in various publications (Duffy, 1962), appears to affect both sensory sensitivity and motor response, and is involved in those consistencies of behavior that we call personality characteristics. (Duffy, 1966: 281)


Considering that these quoted words were written by Elizabeth Duffy 40 years ago, the view expressed was prescient indeed. There is considerable evidence today, from psychophysical, psychophysiological, and biochemical procedures (formerly considered measures of activation), establishing that the personality dimension of extraversion (E) is characterized by individual differences in sensitivity to simple physical stimulation and in the expression of motor responses. At the time when Duffy expressed her views, however, the association of personality with sensory ...

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