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Generalizability Theory as Evidence of the Reliability and Validity of WorkSample Tests and Proficiency Ratings

机译:概化理论作为工作样本测试和熟练程度评级的可靠性和有效性的证据

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This paper uses generalizability (G) theory as a framework to investigate thereliability and construct validity of the Air Force Job Performance Measurement System. G theory was a useful technique for examining the psychometric quality of the measurement system because it permits the specification and estimation of multiple sources of measurement error. G theory was applied to newly developed work sample procedures, Walk-Through performance Tests and to a series of job proficiency ratings comprised of four different rating forms collected from three rating sources. The results provided evidence of strong convergent and discriminant validity of these work sample tests, strong convergent validity across rating forms, and moderate discriminant validity of the rating system. However, ratings did not generalize across self, peer and supervisor rating sources. Results are discussed in terms of their practical and theoretical implications.

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