An openness scale for the California Psychological Inventory.
We developed a 36-item scale to measure Openness, using items on the California Psychological Inventory (CPI; Gough, 1957, 1987, 1996), Form 434. Items were initially chosen on the basis of content validity. Five samples (N = 2,375) were used to establish reliability, validity, and norms; 4 samples consisted of university undergraduate students, and 1 comprised applicants for nonmanagement call centerjobs. Internal consistency estimates obtained in each sample averaged approximately .75, and test-retest stability, assessed in 1 sample, was estimated at .84. Cross-correlations with related scales, for example, the NEO Personality Inventory-Revised Openness scale (Costa & McCrae, 1992) and other CPI-based scales, provided evidence of construct validity. Statistically significant predictive validities were obtained in 2 call centerjob-incumbent samples, with range-corrected true validities of .20 to .36 for a number of job performance criteria. Construct and predictive validity were found to be higher than for other scales consisting of CPI items designed to measure Openness or a related construct. Finally, norms were prepared for university undergraduate students (n = 1,847) and nonmanagement service-sector job applicants (n = 528).
Hakstian
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Department of Psychology, University of British Columbia, Vancouver, Canada. rhakstian@cortex.psych.ubc.ca
Farrell
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D000328:Adult; D001955:British Columbia; D002140:California; D005260:Female; D006801:Humans; D008297:Male; D010555:Personality Inventory; D010560:Personnel Selection; D012016:Reference Values; D015203:Reproducibility of Results; D012737:Sex Factors; D012919:Social Behavior