Psychology 1000 Chapter Notes - Chapter 11: Basal Metabolic Rate, Premarital Sex, Orexigenic

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Shauna Burke

Document Summary

Introduction: motivation: process that influences the direction, persistence, and vigor of goal-directed behaviour. Instinct theory & evolutionary psychology: instinct: inherited predisposition to behave in specific & predictable way when exposed to a particular stimulus, william james: 2 dozen instincts; today: thousands, psychological motives have evolutionary underpinnings- expressed through actions of genes. Homeostasis & drive theory: water cannon: homeostasis- state of internal physiological equilibrium that the body strives to maintain. > sensory mechanism for detecting changes in internal environment; response system can restore equilibrium; control centre receives information from sensors & activates response system. > set point: sensors detect significant temp changes in either direction: clark hull: drive theory: physiological disruptions to homeostasis produce drives, states of internal tension that motive an organism to behave in ways that reduce tension. > ex. hunger, thirst, body temperature, weight, sleep. Incentive & expectancy theories: incentive: environmental stimuli that pull an organism toward a goal; ex. good grade.