Stanley Schachter

Social psychologist whose two-factor theory became the cognitive-appraisal pole of 20th-century emotion theory. See cognitive-appraisal and the paradigm at adrenalin-injection-paradigm.

The two-factor theory

Emotion arises when a state of physiological arousal is given a cognitive label drawn from context. In the 1962 experiment, epinephrine-aroused subjects who could not attribute their arousal to the drug (“uninformed”) took on the emotion of a euphoric or angry confederate; those who could (“informed”) did not. Read as: undifferentiated arousal + appraisal = specific emotion — a direct challenge to autonomic-specificity.

Dror’s revisionist reading

Dror (2017) argues Schachter’s route to the theory ran through social influence, not James–Lange:

• The cognitive element was needed to extend Festinger’s social-comparison theory to emotions.
• The euphoria condition was pure social influence (a stooge), inherited from his affiliation studies.
• James–Lange framing and adrenalin-study citations were added at a reviewer’s request.
• His deeper, lasting move was universalizing sympathetic arousal as constitutive of every emotion.
• Schachter himself was “furious” at the published paper’s Tables 6–9, where meaningless “ns” notations (“Nothing was tested”) appeared via a copy-editing blunder.

Reception

Methodologically savaged by psychophysiologists (Plutchik & Ax 1967; “exquisitely bad,” Levenson) and beset by replication failures, yet enormously influential — enshrined in textbooks and, later, foundational to social-constructionist emotion theory. See friedman-2010-jamesian-perspective.