Is James-Lange theory a theory of emotion?

Yes, the James-Lange theory is a theory of emotion that posits that emotions are the result of physiological reactions to external stimuli. According to this theory, an individual first experiences a physiological response (such as increased heart rate) and then interprets that response as a specific emotion (like fear or excitement). This suggests that our emotional experiences are based on the perception of our bodily reactions rather than the other way around.