Emotions in farm animals:

A circumplex model of affect.

James A. Russell · Journal of Personality and Social Psychology · 1980 · 16K citations

Social Sciences, Psychology, Social Psychology +9

An argument for basic emotions

Paul Ekman · Cognition & Emotion · 1992 · 9.4K citations

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Cognitive, social, and physiological determinants of emotional state.

Stanley Schachter, Jerome E. Singer · Psychological Review · 1962 · 6.2K citations

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Constants across cultures in the face and emotion.

Paul Ekman, Wallace V. Friesen · Journal of Personality and Social Psychology · 1971 · 5.4K citations

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II.—WHAT IS AN EMOTION ?

William James · Mind · 1884 · 3.3K citations

Social Sciences, Behavioral Sciences, Psychology +12