Attributional style and depression in rheumatoid arthritis: The moderating role of perceived illness control.

The moderator-mediator variable distinction in social psychological research: Conceptual, strategic, and statistical considerations.

Reuben M. Baron, David A. Kenny · Journal of Personality and Social Psychology · 1986 · 72.1K citations

Social Sciences, Psychology, Social Psychology +10

Coefficient Alpha and the Internal Structure of Tests

Lee J. Cronbach · Psychometrika · 1951 · 43.2K citations · Full text

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Revised Criteria for the Classification of Rheumatoid Arthritis

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Learned helplessness in humans: Critique and reformulation.

Lyn Y. Abramson, Martin E. P. Seligman, John D. Teasdale · Journal of Abnormal Psychology · 1978 · 6.9K citations

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Measurement of patient outcome in arthritis

James F. Fries, Patricia W. Spitz, R. Guy Kraines et al. · Arthritis & Rheumatism · 1980 · 4.4K citations

Medicine, Internal Medicine, Health Assessment +13