Emotion is a biological arousal produced in response to a stimulus. An emotion is a "complex reaction pattern, involving experiential, behavioral, and physiological elements, by which the individual attempts to deal with a personally significant matter of event."vandenBos, Gary B. (2006). APA Dictionary of Psychology. Washington, DC: American Psychological Association It arises without conscious effort and is either positive or negative in its valence. Other closely related terms are: · affect, a synonym for emotion · affect display, external display of emotion · disposition, referring to a durable differentiating characteristic of a person, a tendency to react to situations with a certain emotion · feeling, which usually refers to the subjective, phenomenological aspect of emotion · mood, which refers to an emotional state of duration intermediate between an emotion and a dis