Small is beautiful: Implications of reliability and statistical power for testing the efficacy of HR interventions
Sujin K. Horwitz, Irwin B. Horwitz
Human Resource Management · 2012 · Volume 51 · Issue 1
Abstract
The development of optimal human resource practices is often contingent on the accurate statistical testing of potential interventions. Testing the efficacy of HR interventions can be enhanced by taking additional measures to improve statistical power, but the traditional means of increasing power through sample size are often beyond the cost and ability of HR professionals to pursue. This article, therefore, focuses on measurement procedures as an alternative way to increase statistical power for detecting HR intervention effects. Selection of reliable and appropriate measures and subsequent instrumentation are examined as efficacious and cost-beneficial techniques that can be employed during the planning and designing stage of a study for augmenting statistical power to optimize business decision making. © 2012 Wiley Periodicals, Inc.
Keywords
HR professionals, measurement, reliability, statistical power
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