PSY 121 Lecture Notes - Lecture 18: Ghrelin, Leptin, Heritability
Document Summary
An inferred process within a person or animal that causes movement either toward a goal or away from an unpleasant situation. Study of motivation dominated by focus on drives: biological urges, such as those to acquire food & water, to have sex, to seek novelty, and to avoid cold and pain. But motivation is more than just biological drives. Understanding motivation: relates biology to behaviour, accounts for behavioural variability, assigns responsibility for actions, explains perseverance despite adversity. Influences on motivation: motivation to reach goals may vary depending on the source: Intrinsic motivation: the pursuit of an activity for its own sake and the pleasure it brings. Extrinsic motivation: the pursuit of an activity for external rewards, such as money or fame. Motives to eat: eating physiology, detect internal food need, initiate and organize eating behaviour, monitor quantity and quality of food eaten, detect when sufficient food has been eaten and stop eating.
