California Psychological Inventory

Purpose: Designed to evaluate interpersonal behavior and social interaction within normal individuals.

Population: Ages 13 and over.

Scores: Inventory produces 18 scale scores.

Time: (45-60) minutes.

Author: Harrison Gough

Publisher: Consulting Psychologists Press, Inc.

Description: The purpose of the CPI scales is stated by the author as follows: "Each scale is designed to forecast what a person will say or do under defined conditions, and to identify individuals who will be described in characteristic ways by others who know them well or who observe their behavior in particular contexts. The scales are grouped for convenience into four broad categories, bringing together those having related implications. The underlying logic here is interpretational, not factorial, i.e., these four categories do not necessarily constitute psychometric entities."

Scoring: The items on the inventory produce scores for 18 scales, which are divided into four classes: measures of poise, ascendancy, self-assurance and inter-personal adequacy; measures of socialization, responsibility, intra-personal values, and character; measures of achievement potential and intellectual efficiency; and measures of intellectual and interest modes.

Reliability: The manual contains no information on reliability.

Validity: Correlations between individual CPI scales and relevant external criteria fall in the .2 to .5 range. Such relationships are typical in personality research, and extremely high correlations are unlikely to be found since the scales are developed to assess rather broad behavioral tendencies. The manual contains no information on item intercorrelations and factorial analyses.

Norms: The manual contains no information on norms.

Suggested Uses: Using the CPI as a research tool and as an assessment device for adolescents and adults have been popular among psychologists.