A revised version of the california Psychological Inventory was administered to 120 college students under three different instructional conditions in an examination of the fakeability of the managerial potential scale of the CPI. The instructional sets and the means for the Hp scale in each condition were: (a) an honest instructional set, H = 19. 5; ( b) a "fake good" managerial potential instructional set, H = 24.9; and (c) a "fake bad" managerial potential instructional set, H = 7.8. Analyses indicated that the Hp scale ls highly fakeable on both a group and individual basis. However, different interpretations of the overall magnitude of the fakeability of the Mp scale emerge depending on how fakeability is defined. The good impression (Gi) scale was found to be fairly accurate at identifying faked inventory profiles. Using a cutting score of T = 60, 87 % of the faked good profiles were correctly identified while only 7 % of the honest profiles were misclassified. Of several individual differences variables examined, only SAT verbal scores were predictive of faking ability.