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Lecture 9

PSY 262 Lecture 9: Eating Disorders

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Psychology - A&S
PSY 262

Chapter 9: Eating Disorders DSM-5 Criteria Anorexia Nervosa • Restricted caloric intake resulting in body weight significantly below the minimum normal weight for one’s age and height • Intense fear of gaining weight or becoming fat, which does not diminish even with weight loss • Body image distortion (not recognizing one’s thinness) or self-evaluation unduly influenced by weight • Types- o Restricting ▪ Weight loss through severe dieting or exercising o Binge-eating/purging ▪ Involves self-induced vomiting or use of laxatives or diuretics to control weight, often after binge eating Bulimia Nervosa • Recurrent episodes of binge eating and compensatory behaviors (one or more times per week for 3 or more months) • Loss of control over eating behaviors when bingeing • Use of vomiting, exercise, laxatives, or fasting to control weight • Self-evaluation unduly induced by weight or body shape Binge Eating Disorder • Recurrent episodes of binge eating (one or more binges a week for 3 or more months) • Loss of control when bingeing • Eating until uncomfortably full or when not hungry • No regular use of inappropriate compensatory activities to control weight • Marked distress (guilt, embarrassment, depression) over bingeing Other Specified Feeding/Eating Disorders • Individuals of normal weight who meet the other criteria for anorexia nervosa • Individual who meet the criteria for bulimia nervosa or binge-eating disorder except that binge eating occurs less than once a week or has been present for less than 3 months • Individuals with night-eating syndrome, a distressing pattern of binge eating late at night or after awakening from sleep • Individuals who do not binge but frequently purge (self-induced vomiting, misuse of laxatives, diuretics or enemas) as a means to control weight Chapter 9: Eating Disorders Etiology Biological • Moderate heritability • Pubertal weight gain • Appetitive neural circuitry • Dopamine • Gherlin and leptin Psychological • Body image dissatisfaction/distortions • Low self-esteem or lack of • Perfectionism or o
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