Overt and personality-based integrity tests are used for the same purposes, but the relationship between the two kinds of measures is unclear. Moreover, although the construct validity of personality-based integrity measures is well understood, the psychological meaning of overt integrity measures is unclear. A sample of applicants (N = 2,168) for driver, warehouse, and clerical jobs completed an overt integrity test (Reid Report), a personality-based integrity test (Employee Reliability Index) and a measure of normal personality (Hogan Personality Inventory). A principal components analysis of the intercorrelations between the overt and the personality-based integrity item responses revealed four themes: (a) punitive attitudes, (b) admissions of illegal drug use, (c) reliability, and (d) theft admissions. A model testing for a general conscientiousness factor provided a good fit for the overt and personality-based integrity test variables, although item overlap between the two test types was minimal. Finally, the punitive attitudes and theft admissions components of the Reid item pool are most closely related to the Big Five personality factors of conscientiousness and emotional stability; the Reid component of illegal drug use was unrelated to personality measures.Despite the fact that integrity tests are widely used for personnel selection, we actually know rather little about their psychological meaning. This study concerns three questions. First, how are overt and personality-based integrity measures related and what do they measure? Second, does a structural model specifying a single conscientiousness factor best fit the data from overt and personality-based integrity measures? Finally, what is the relationship between components of overt integrity and a Big Five measure of normal personality?Sackett and his colleagues (1984,1989) distinguish between types of pre-employment integrity tests based on their item content. Overt integrity tests ask about attitudes toward dishonest behavior, and history of theft and other illegal activities. In contrast, personality-based integrity tests assess attitudes and dispositions that are only inferentially related ~ The authorsgratefully acknowledge the contribution of Kelly Vandever who assisted in this research. We also thank Michael Cunningham, Fritz Drasgow, Thomas Hill, Robert Hogan, Brent Roberts, and several anonymous reviewers for their helpful comments.Correspondence and requests for reprints should be addressed to Joyce Hogan, Hogan Assessment Systems, PO. Box 521 176, lblsa, OK 74152.