PSYC 200 Study Guide - Homeostasis, Endorphins, Attachment Theory
Document Summary
Chapitre 12: motivation: the hungry animal: motives to eat, the biology of weight. Psychologist use to think that being overweight = sign of emotional disturbance. Later research showed that overweight people aren"t more/less emotionally disturbed than slim people. Also found that heaviness is not always a result of overeating. Explanat*: biological mechanism keeps your body weight at a genetically influenced set point (the weight you stay at when you"re not trying to gain or lose) -> can vary about 10% in each direct*. If you go too high/low, your body will produce the need to eat/reduce eating to go back to the set point. Everyone has a genetically programmed basal metabolism rate (the rate at which the body burns calories for energy) and a fixed number of fat cell (stores fat for energy and can change in size). Obese people have 2 the number of fat cells as normal-weight adults, and their fat cells are bigger.
