Answer:
James-Lange theory.
Explanation:
According to James-Lange theory, emotion results from physiological states triggered by stimuli in the environment. Essentially, the theory proposes that after the initial perception of a stimulus, the experience of the emotion results from the perception of one's own physiological changes. It is not the emotion that comes first, the physiological changes occur before. The stimulus arouses physiological changes and the brain reacts to these changes in the form of an emotion.
