Further evaluation of the CPI Repeated Item Short Form

Cross-validated the CPI Repeated Item Short Form (RISF). Three populations (police dispatcher recruits (N = 22), college students (N = 30), and penitentiary prisoners (N = 51) were used for comparison purposes. Each S was administered the full-length CPI, from which scores for the short forms were extracted. CPI short-form comparisons were conducted by contrasting intercorrelational matrices, comparing correlations with full length CPI scales, and determining profile validity/invalidity as well as matching profile high and low points. On all of the described comparisons the RISF compared favorably relative to the only other published CPI short form (i.e., the Factor Analyzed Short Form--FASF). The authors conclude the RISF is a good approximation of the full length CPI profiles for both institutionalized and normal populations.