Psych midterm 3.pdf - Thursday Psych notes midterm 3 Psych...

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Thursday, March 21, 2019 Psych notes midterm 3 Psych - Motivation and Emotion - What is motivation?
- how many instincts new there? - does t promote understanding? - what about learned motives?
- 4. priorties among needs- Abraham Maslow
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Thursday, March 21, 2019 - brain monitors glucose levels (hypothalamus) - filling rats stomach with saltwater reduces hunger less than milk - 1.lateral hypothalamus: initiates hunger - stimulation—>hunger - lesioned—> no interest in food - 2.ventromedial hypothalamus:supresses hunger - stimulation—>stop eating - lesioned—> continuous eating - set point theory: hypothalamus strives to maintain optimum body weight (set point) - eating produces leptin (hormone released by fat cells) - leptin and hunger are negatively correlated - ex: memory of last meal - amnesiacs sometimes repeat meals - ex: jealousy?? - obesity: BMI score greater than 30 - why does obesity happen?
- 2. genes?
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Thursday, March 21, 2019 - gene maintains constant levels of body fat - defective ob gene —> obesity - 3. enviormetla factors? - ex:more fast food, more sedentary factors, etc - high cultural variability in obesity - eating disorders: anorexia nervosa - refusal to maintain even low normal weight - intense fear of aging weight - body image distortion - most common among adolescents - 90% of cases = female - bulimia nervisa - binge eating—> guilt and depression —> attempt to prevent weight gain - purging type -intentional vomitting laxatives - non purging type-fasten, exercise - most common among women in late teens -early 20’s

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