In almost 50 years since its first publication, considerable validity evidence has collectively accumulated for these scales. Four scales were developed using internal consistency as the primary construction strategy, and 3 were constructed using a combination of empirical methods with the internal consistency criterion. Empirical methods of construction involving contrasted groups were used in developing 13 scales. Harrison Gough has referred to the dimensions measured by the basic scales as “folk concepts,” that is, concepts that are used in routine daily life by people to describe patterns of behavior in themselves and others. Three of the 20 scales are validity scales that assess attitudes related to test taking. The most recent version of the CPI employs 434 items. The CPI consists of 20 dimensions of personality with a strong interpersonal orientation. Use of the CPI involves application and interpretation of the instrument at three different levels. As a general-purpose personality assessment tool, it is widely respected and arguably the most effective instrument available for use with normal populations.Īn important source of the utility of the CPI is found in its structural complexity. The CPI has been studied extensively and has been widely used in both research and applied contexts. It has a historical relationship to the Minnesota Multiphasic Personality Inventory (MMPI) and shares many items with the older, well-known MMPI. The California Psychological Inventory (CPI) was first published in 1956.
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