Abstract
Reported data on American and British college student samples for the new Psychoticism, Extraversion, and Neuroticism (PEN) Inventory. Descriptive statistics for PEN dimensions for five American female samples (total 492 subjects), five American male samples (total 399 subjects), one British female sample (700 subjects) and one British male sample (700 subjects) were summarized, Intercorrelations of PEN dimensions for most of the American samples were reported. The patternu of significant intercorrelations tended to be in accord with previous work on prior related inventories. Similarities and differences among the sample descriptive statistics were discussed.