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"Ch11_Student - Chapter 11 Outline Professor...

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Unformatted text preview: Chapter 11 Outline Professor LeBreton: PSYC 120 Motivation and Emotion Chapter 11  Motivation: process that causes movement either toward a goal or away from an unpleasant situation  Drive: internal state that arises in response to a need  Instinct: unlearned characteristic patterns of responding  Homeostasis: body's need to maintain balance (temperature, fluids etc.)  Intrinsic vs. Extrinsic Motivation: doing something because you enjoy it vs. doing something because you get a reward Reading the Twilight series versus reading your math text  Maslows 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 varies about 10% in either direction (set point of 150 lbs. Could weigh 135- 165) Basal Metabolism: rate at which body burns calories, fixed number of fat cells Hormones also influence the set point Heritability of set point is .4 to .7 in twin studies  Controlling our eating  Brain is #1 organ in determining hunger Leptin: a hormone that communicates with the hypothalamus to determine Chapter 11 Outline Professor LeBreton: PSYC 120 when to start and stop eating (doesn't work well usually, because we are good at consciously override) Insulin: hormone that sends messages to cells to either burn energy or store as fat Glucose: sugar that cells require for energy  Obesity Epidemic  BMI (Body Mass Index): measure of weight relative to height  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 http://www.freebmichart.net/  Speculative Causes of obesity epidemic: Abundance of fast food Eating on the go National portion size Higher stress lifestyle  Evolution determines that we gain weight when food is abundant, but does not...
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"Ch11_Student - Chapter 11 Outline Professor...

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