California Psychological Inventory

California Psychological Inventory

The California Psychological Inventory (CPI) is a self-report inventory created by Harrison Gough and currently published by Consulting Psychologists Press. It was created in a similar manner to the Minnesota Multiphasic Personality Inventory (MMPI), but unlike the MMPI, it is not concerned with maladjustment or clinical diagnosis, but concerned itself with more "normal" aspects of personality. Aiken, L.R. (2004)"Psychological Testing and Assessment." New York:Allyn and Bacon.]

Test Design

The CPI is made up of 434 true-false questions, half of which were taken from the original version of the MMPI. The test is scored on 18 scales, three of which are validity scales. Eleven of the non-validity scales were selected by comparing responses from various groups of people. The other four were content validated.

The test is typically used with people aged 13 years and older. It takes about 45-60 minutes to complete.

The revised third edition of the CPI contains 434 items. This latest version requires that the patient's false and true answers be transformed at an additional cost into raw scale and Standard scores by the publisher, who will also provide interpretative report writing. The older CPI with the 462 items is still available for sale by the publisher, Consulting Psychologists Press, and comes with plastic scoring keys and profile sheets, thus allowing each research or clinical psychologist to score the test by hand, an admittedly less convenient but nonetheless a less expensive alternative, one ideally suited for use in training psychology students. [Gough, H.G. (1987) California Psychological Inventory Administrator's Guide. Palo Alto, CA: Consulting Psychologists Press, Inc.]

coring

The inventory contains 434 items which can be scored to yield 18 scales. The 18 scales are further grouped into four classes: (1)measures of poise, ascendancy, self-assurance, and interpersonal adequacy; (2) measures of socialization, responsibility, intrapersonal values, and character; (3) measures of achievement potential and intellectual efficiency; (4) measures of intellectual modes and interest modes. Gough,H.G. & Bradley, P. (1996). "CPI Manual." Ed.3. Palo Alto, CA: Consulting Psychologists Press.]

This paragraph will discuss what are referred to as the Structural Scales of the CPI-462 version, using information being provided by the manual for that version, the CPI Administrator's Guide from 1987. [Gough, H.G. (1987). California Psychological Inventory Administrator's Guide. Palo Alto, CA: Consulting Psychologists Press, Inc.] Alpha, Beta, Delta and Gamma personality types are conveniently illustrated by a score's placement on a grid defined by the two dimensions - the degree to which the person is norm-favoring or norm-questioning on one dimension (called the v.2 scale), and the degree to which he or she is more externally or internally focused (the v.1 scale). Alpha personality types are more enterprising, dependable and outgoing. Betas are reserved, responsible and moderate. Gammas are adventurous, restless, and pleasure-seeking. Finally, Deltas are withdrawn, private, and to some extent disaffected. In a separate measure known as Realization, also referred to as the v.3 scale, a tester's score may reflect the degree to which he or she is reflective, capable, and optimistic about the present and future, when the score is high, or possesses the opposite characteristics when low. Thus, research scientists or medical or psychology graduate students tend to score high on this scale, while psychiatric patients, juvenile delinquents, prison inmates and even high school students in general (who lack life experience and are still forging a solid sense of identity) tend to score low.

Another component of this test are the 20 Folk Concept Scales (18 in the CPI-434 version) - measuring Dominance, Capacity for Status, Sociability, Social Presence, Self-acceptance, Independence, Empathy, Responsibility, Socialization, Self-control, Good Impression, Communality, Well-being, Tolerance, Achievement via Conformance, Achievement via Independence, Intellectual Efficiency, Psychological-mindedness, Flexibility, and Femininity/Masculinity. These scales are called "folk" as they attempt to capture personality themes that should be broadly cross-cultural and easily understood around the world. This test is thus an attempt to tap into personality factors that arise without exception to some, varying, degree, in all humans regardless of cultural context, and which provide a picture of people's relatively stable tendencies and characteristics, which is as good as any definition for what is loosely termed their unique "personality."

Validity

Correlations between CPI scales and related external criteria tend to fall in the .2 to .5 ranges. This degree of correlation is typical for much of personality research. Extremely high correlations are not likely to be found for personality measures because the scales typically try to assess rather broad behavioral tendencies.

Norms are available for males only, females only, and male/female data combined. The CPI has been very popular in research and in individual assessments of adolescents and adults. The fact that it was developed and normed on non-psychiatric or non-clinical populations is regarded almost universally as part of its positive reputation and usefulness among psychologists.

References


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