Abstract
An attempt was made to evaluate the internal consistency, temporal reliability, and validity of peer ratings as used in a classroom situation. Twenty-six Ss were divided into four small groups as part of a 6-wk. course in industrial psychology. Ss designed the rating device along four performance-related dimensions. Ratings of self and group peers were obtained at 2-wk. intervals; intelligence and class grades were used as validation criteria. It was found that internal consistency was low, but did not vary as exposure increased over time. The reliability of the four scales (Coordination and Organization; Ideas, Information and Resources; Effort; and Interpersonal Relations) did not vary appreciably. Factor analysis of the final ratings yielded Halo, Interpersonal Effectiveness, and Productivity factors. Several explanations for the high correlation (.77) between the Interpersonal Relations scale and class grades are offered.
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