Schachter-Singer Theory

A theory of emotion stating that a subjective emotional state is dictated by an individual’s cognitive appraisal of their physiological arousal occurring simultaneously with the situation.

Reference:
Friedman, B.H. (2010). Feelings and the body: The Jamesian perspective on autonomic specificity of emotion. Biological Psychology, 84 (3). 383-393. doi: 10.1016/j.biopsycho.2009.10.006