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NCJRS Abstract

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NCJ Number: 142395 Find in a Library
Journal: Law and Human Behavior  Volume:17  Issue:2  Dated:(April 1993)  Pages:157- 166
Author(s): R Borum; H V Stock
Date Published: 1993
Page Count: 10
Type: Report (Study/Research)
Format: Article
Language: English
Country: United States of America
Annotation: Using the Minnesota Multiphasic Personality Inventory (MMPI) and the Inwald Personality Inventory (IPI), this study examined the differences in psychometric defensiveness between law enforcement applicants identified as being deceptive and a comparison group of candidates for whom no deception was indicated.
Abstract: The criterion for deception was an admission by applicants that they knowingly lied or provided false information in completing the application or background questionnaire so as to appear more favorable or because they thought the information would "look bad." Areas of deception included both minor shortcomings and more significant problems that were typically related to job history, school history, and drug use. Participants were 36 applicants for positions of police officer or deputy sheriff. Because of the relatively small number of subjects in the study, the scope of investigation was limited to seven scales: the L, K, Mp, O-S total, F-K Index, and Es-K Index from the MMPI and the GD scale from the IPI. A separate analysis of variance was run for each of the seven variables. Significant differences were found on the traditional validity (minimization) scales for both instruments, as well as several supplemental scales and indexes from the MMPI. A new index (Es-K) from the MMPI showed a highly significant difference between groups and good classification accuracy. The results suggest that deceptive applicants show more defensiveness on psychometric testing and that test results may assist in raising the index of suspicion for detecting deception in law enforcement applicants. By combining multiple psychological tests with multiple sources of collateral information and a structured clinical interview, the probability of identifying a deceptive or dishonest applicant increases. 2 tables and 35 references
Main Term(s): Police personnel selection
Index Term(s): Background investigations; Minnesota Multiphasic Personality Inventory; Police; Psychological evaluation
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