APA Dictionary of Psychology

a 140-item self-report inventory for children ages 8 to 12 years that is based on Cattell’s personality trait theory. It assesses 14 dimensions of personality (e.g., shy vs. bold, self-assured vs. apprehensive, sober vs. enthusiastic) conceptualized as useful in evaluating, understanding, and predicting personal adjustment, social development, and academic performance. [originally developed in 1959 by U.S. educator Rutherford Burchard Porter (1909–2002) and Raymond B. Cattell]