They could not improve their overall individual performances when collaborating. Neither judge was more accurate in his selections (when current officer performance records were compared with judges' determination of acceptability) despite different selection strategies. They reached the near-maximum non-chance agreement possible, given that they used the nominal classes at different rates. The judges used markedly different selection strategies and disagreed on nominal placement in about one-third of the cases. The judges were asked to discriminate between unacceptable and acceptable police officers and worked at four tasks, collaborating on one. Both judges had extensive experience with the MMPI, and one had 2 years experience as a screener for police candidates. Two contrast groups of 23 each were selected for study from the total sample. MMPI protocols of 424 active members of the San Antonio Police Department (Texas) were used in the study.
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