Ch11 - Chapter 11 Outline Professor LeBreton: PSYC 120...

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Chapter 11 Outline Professor LeBreton: PSYC 120 Motivation and Emotion Chapter 11 h Motivation: process that causes movement either toward a good/away from unpleasant situation h Drive: internal state that arises in response to a need h Instinct: unlearned characteristic patterns of responding h Homeostasis: body’s need to maintain balance (temp, fluids,etc.) h Intrinsic vs. Extrinsic Motivation: doing something because you enjoy it vs. doing something because you get a reward h Maslow’s Hierarchy of Needs: Draw your pyramid here: Motives to Eat Set Point: genetically influenced weight range that you will stay at when not trying to gain or lose weight
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Chapter 11 Outline Professor LeBreton: PSYC 120 - varies 10% in either direction (set point of 150 lbs could weigh 135-165) Basal Metabolism: rate @ which body burns calories, fixed # of fat cells Hormones also influence the set point Heritability of set point is .4 to .7 in twin studies h Controlling our eating h Brain is #1 organ in determining hunger Leptin: a hormone that communicates w/ hypothalamus to Insulin: hormone that sends messages to cells to either burn energy/store as fat Glucose: sugar that cells require for energy h Obesity Epidemic h BMI (Body Mass Index): measure of weight relative to height h More than 50% of American adults and 25% of children are overweight or obese according to the BMI chart BMI not always a good measure of “healthy” h Speculative Causes of obesity epidemic: Abundance of fast food Eating on the ‘go’ National portion size Higher stress lifestyle
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Chapter 11 Outline Professor LeBreton: PSYC 120 h Evolution determines that we gain weight when food is abundant, but does not have a comparable mechanism for losing weight h Culture can determine when, what and how much we eat Culture in family
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Ch11 - Chapter 11 Outline Professor LeBreton: PSYC 120...

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