PSY-1200 Chapter Notes - Chapter 32: Homeostasis, Orexin, Thermostat

• School: Vanderbilt University
• Department: Psychology (A&S)
• Course: PSY-1200
• Professor: Sandberg Elisabeth

Document Summary

Motivation: need or desire that energizes and directs behavior. Instinct theory (evolutionary perspective): focuses on genetically predisposed behaviors. Drive-reduction theory: focuses on how our inner pushes and external pulls interact. Arousal theory: focuses on nding the right level of stimulation. Hierarchy of needs: describes how some of our needs take priority over others. Fad of classifying all sorts of behaviors as instincts early instinct theorists were simply naming human behaviors instead of explaining them. Instinct: complex behavior that is rigidly patterned throughout a species and is unlearned. After original instinct theory of motivation collapsed. Drive-reduction theory: idea that a physiological need creates an aroused tension state (a drive) that motivates an organism to satisfy the need. (usually) when a physiological need increases, so does a physiological drive. Aim of drive reduction = homeostasis = tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry. Incentive: positive or negative environmental stimulus that motivates behavior.