1. Definition of Emotion: Emotions are feelings that generally have both physiological and cognitive elements that influence behavior.
Types of emotion: (Feldman-sheet).
Theories of emotion:
Emotion
James-Lange theory of Emotion: According to William James and Carl Lange emotional experience is, very simply, a reaction to instinctive bodily events that occur as a response to some situation or event in the environment.
This view is summarized in james’s statement, “ We feel sorry because we cry, angry because we strike, afraid because we tremble”.

2. Cannon-Bard theory of emotion: According to Walter Cannon, and Philip Bard, both physiological arousal and emotional experience are produced simultaneously by the same nerve stimulus.
Schachter-Singer theory of emotion: Schachter-Singer emphasizes that we identify the emotion we are experiencing by observing our environment and comparing ourselves with others. According to them, emotions are determined jointly by a non-specific kind of physiological arousal and its interpretation, based on environmental cues.