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Understanding The Pxs Aspect Of Within-Person Variation: A Variance Partitioning Approach, Brian Lakey

Funded Articles

This article reviews a variance partitioning approach to within-person variation based on Generalizability (G) Theory and the Social Relations Model (SRM). The approach conceptualizes an important part of within-person variation as Person x Situation (PxS) interactions: differences among persons in their profiles of responses across the same situations. The approach provided the first quantitative method for capturing within-person variation and demonstrated very large PxS effects for a wide range of constructs. These include anxiety, five-factor personality traits, perceived social support, leadership, and task performance. Although PxS effects are commonly very large, conceptual and analytic obstacles have thwarted consistent progress. For …