PSYC 1030H Lecture 3: Lecture 3 January 26

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I(cid:374)sti(cid:374)(cid:272)t theor(cid:455) also did(cid:374)(cid:859)t pro(cid:448)ide a(cid:374) e(cid:454)pla(cid:374)atio(cid:374) for (cid:862)i(cid:374)sti(cid:374)(cid:272)ts(cid:863) (cid:894)a des(cid:272)ripti(cid:448)e (cid:373)odel, does(cid:374)(cid:859)t u(cid:374)dersta(cid:374)d the (cid:858)(cid:449)h(cid:455)(cid:859) Individuals who engaged in adaptive social behaviours (cid:449)ere the (cid:862)fittest(cid:863) (cid:894)the(cid:455) te(cid:374)d t sur(cid:448)i(cid:448)e longer; more successful in passing their genes to future generations: evolutionary theories used to explain various motives. Examples of biological motives in humans: hunger, thirst, sex, temperature, excretory, sleep and rest, activity, aggression) Leads to reduction in physical tension (drive reduction) Limitations to drive theory homeostasis seems irrelevant to many human motives (cid:894)e. g. , (cid:862)thirst for k(cid:374)o(cid:449)ledge(cid:863) (cid:449)hat is this? (cid:895) Motivation may exist without drive arousal: paradoxes of hunger and eating behaviour. Hunger- a basic human need and a strong motivator that influences behaviour (biological factors, psychosocial factors, food availability, learned preferences: biological factors gastric activity the basis of hunger. Cannon and washburn (1912) put a (cid:271)alloo(cid:374) i(cid:374) the su(cid:271)je(cid:272)t(cid:859)s sto(cid:373)a(cid:272)hs, (cid:271)le(cid:449) it up, a(cid:374)d it caused them to feel full. Various hormones (ie. insulin) help body regulate glucose.

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