Abstract
The study compared pre-employment and current MMPI/MMPI-2 Basic Scale scores of small- and mid-size city Texas municipal police officers to assess longitudinal personality change. Participants had at least five years continuous, “street level” police experience. Twenty-three veteran police officers from a mid-size city and 19 small-city police officers volunteered to participate. Pre-employment MMPI/MMPI-2 information was obtained from police department records. Current MMPI-2 data was collected in small group or individual administrations. Significant increases in K-corrected T-Scores occurred on Scale F and eight of the Basic Scales; L and K decreased significantly. Mean scores remained within the normal range. Mid-size city officers produced higher K and 5 scores than small-city officers.
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