James-Lange theory

The James-Lange theory, proposed independently by William James and Carl Lange in 1884 and 1885, suggests that emotions are a result of physiological responses to external stimuli. According to this theory, encountering a situation that causes arousal, such as an automobile accident, leads to specific bodily changes like increased heart rate and breathing. The brain then interprets these physiological changes as a particular emotion, such as fear. This contrasts with the idea that emotions are purely internal feelings; instead, the theory posits that the perception of emotion is dependent on the body's reactions. While influential, this theory has been refined by later research, which indicates an interaction between physiological arousal and cognitive processes in determining emotional expression.12