16 PF is the standard abbreviation for the 16 Personality Factors multivariate-derived by psychologist Raymond Cattell. The Cattell 16PF (16 Personality Factor) model is probably the most-widely used system for categorizing and defining personality. The 16 PF is based on the 16 "source traits" put forth by Raymond B. Cattell in the 1940's. The 16 primary factors are each weighted and combined with other relevant factors into global factors.This book gives basic an introduction to 16PF Psychometric Testing.