This study investigated the correlation between the extraversion-introversion dimension and the need for, or avoidance of, sensory stimulation. (Author/RK)

A large sample of students completed Form A of the Eysenck Personality Inventory, and four subgroups were later asked to simulate extraversion, introversion, neuroticism or stability. It was found that subjects could simulate these four personalities successfully. The changes in individual item responses were correlated with the items' factor…

A serial-reaction task was used to study personality, as well as physiological, correlates of individual differences in performance decrement under low task-load conditions. (Editor)

Discusses the difficulties of defining races and establishing statistical differences between such groups. Points out that studies of such aspects as temperament or basic personality traits show much more variation within groups than between groups. Investigators of such questions should be especially careful to use sound methodology and cautious…