Dispositional optimism as a predictor of depressive symptoms over time

The CES-D Scale

Lenore Sawyer Radloff · Applied Psychological Measurement · 1977 · 53.3K citations · Full text

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Development and validation of brief measures of positive and negative affect: The PANAS scales.

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Development and validation of brief measures of positive and negative affect: The PANAS scales.

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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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Distinguishing optimism from neuroticism (and trait anxiety, self-mastery, and self-esteem): A reevaluation of the Life Orientation Test.

Michael F. Scheier, Charles S. Carver, Michael W. Bridges · Journal of Personality and Social Psychology · 1994 · 5.8K citations

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