PSY 1101 Chapter Notes - Chapter 11: Orexigenic, Leptin, Ghrelin

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Najwa Haddad

Document Summary

Intensity - greater vigor in responding, often accompanying motivated behavior. 4 complementary theories of motivation. Instinct and evolutionary theories: drive and incentive theories, arousal theories, hierarchy of needs, instinct theories and evolutionary psychology, evolutionary explanations based on darwinian theory. Low arousal ! boredom ! motivation for stimulation: high arousal ! overstimulation ! motivation for calm, ex. Self- determination theory (sdt: autonomy, competence, relatedness. Self- trans- cendence needs: need to nd meaning and identity beyond self. Self- actualization needs: need to live up to our fullest and unique potential. Three needs that must be satisfied for psychological growth and success: Energy balance: calories consumed match calories expended. Physiology of hunger: how homeostasis works. Glucose: form of sugar that circulates in blood and provides a major source of energy. It: when ventromedial hypothalamus is stimulated, it decreases appetite and hunger. Rats which have does this by releasing orexin their ventromedial hypothalamus removed continue to eat with no restraint.