A Reliability Generalization Study of Coefficient Alpha for the Life Orientation Test

Matt B. Vassar · Greg Bradley

30 citations0/0 files storedJournal of Personality Assessment

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Psychometric Methodologies and Testing Optimism, Hope, and Well-being Reliability and Agreement in Measurement

Abstract

Dispositional optimism is a widely studied construct in social science and medicine associated with a variety of important psychological and physiological outcomes. Our purpose in this study was to examine coefficient alpha for a popular optimism measure: The Life Orientation Test (LOT; Scheier & Carver, 1985). We utilized a meta-analytic procedure known as reliability generalization to provide an aggregate estimate of coefficient alpha across empirical studies that have employed the scale over time and across populations. Furthermore, we identified sample and demographic characteristics associated with variance in coefficient alpha. We discuss conditions associated with variability in coefficient alpha and provide suggestions for continued research for the LOT.

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1994Distinguishing optimism from neuroticism (and trait anxiety, self-mastery, and self-esteem): A reevaluation of the Life Orientation Test.1985Optimism, coping, and health: Assessment and implications of generalized outcome expectancies.1979Reliability and Validity Assessment 1980The revised UCLA Loneliness Scale: Concurrent and discriminant validity evidence.2011Reliability and Validity Assessment 2006The Sources of Four Commonly Reported Cutoff Criteria 2001Understanding Internal Consistency Reliability Estimates: A Conceptual Primer on Coefficient Alpha 1989Dispositional optimism and recovery from coronary artery bypass surgery: The beneficial effects on physical and psychological well-being.

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