PSYC 1000 Chapter Notes -Arcuate Nucleus, Pangs, Ghrelin

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1000
• Professor: Dan Meegan

Document Summary

Motivation: need or desire that energizes and directs behaviour, four theories. Darwin"s theory grew: classify behaviours as instincts, didn"t explain human behaviour just named them. Instinct: complex behaviour that is rigidly patterned throughout a species and is unlearned. Infant rooting and sucking: psychologists believe it is both psychological needs and wants. Drive reduction theory: the idea that psychological need creates an aroused tension state (a drive) that motivates an organism to satisfy the need, need (food, water) drive (hunger, thirst) drive reducing behaviours (eating, drinking) Aim is for homeostasis: tendency to maintain a balanced or constant internal state, the regulation of any aspect of the body chemistry around a particular level. Can be pulled by incentives: positive or negative environment stimulus that motivates behaviour. When there is a need and incentive feel strongly driven: starving person smells bread. Human motivation seeks optimum levels of arousal: needs satisfied, still feel driven, too much can cause stress, not enough, bored.