Rational and empirical linkages were formed between the “Big Five” personality factors and two personality inventories: the Inwald Personality Inventory (IPI), which is a personality inventory designed especially for use in the selection of corrections officers, and the Minnesota Multiphasic Personality Inventory (MMPI). A criterion‐related validation of the study was then conducted to assess the validity of these two measures of the Big Five in predicting various measures of police performance. Results indicated that while both inventories provided adequate measures of Neuroticism, Extraversion, Agreeableness, and Conscientiousness, neither inventory consistently contributed incremental validity over the Civil Service