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Eating Behaviors

Eating Behaviors. By: Patrick Thibodeau. Experiment 1: Stress-induced laboratory eating behavior in obese women with binge eating disorder. Purpose – To compare the eating behavior of obese patients without binge eating disorder versus obese patients with binge eating disorder

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Eating Behaviors

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  1. Eating Behaviors By: Patrick Thibodeau

  2. Experiment 1: Stress-induced laboratory eating behavior in obese women with binge eating disorder. • Purpose – To compare the eating behavior of obese patients without binge eating disorder versus obese patients with binge eating disorder • Hypothesis - The induction of stress has an effect on eating characteristics, especially in women who suffer from binge eating disorder (BED). • 71 female subjects – 35 with BED • 2x2 factorial design

  3. Procedure • Both groups (BED and non-BED) fasted overnight. • Upon arrival for the experiment, all participants ate half a sandwich. • After a stressor or neutral event the participants can eat as much pudding as they want. • Trier Social Stress Test versus reading newspaper (neutral). • Behavior was measured using a UEM • Universal eating monitor – special desk equipped with an electronic scale that measures how much food is consumed (g) per .5 seconds.

  4. Results • BED • enhanced initial eating rate from non-stress to stress • .33 g/s as compared to .53 g/s • Less deceleration of consumption throughout the stress condition than in the non-stress condition • Larger spoonfuls • Without BED • reduced initial eating rate • .53 g/s versus .47 g/s • Greater deceleration during stress phase than in the non-stress phase

  5. Experiment 2: Understanding variety: Tasting different foods delays satiation. • Purpose – to investigate whether or not variety in tastes of foods delays satiation. • Hypothesis – introduction of different tasting foods to taste and rate during consumption will result in a delayed satiation and greater amount of consumption. • 33 participants – 23 females and 10 males • Sex as a between-groups factor

  6. Procedure • 4 lab sessions • Sweet or salted popcorn (preferential) • Participants ate at their own rate, or were interrupted to rate the taste of what they were eating, a similar tasting food, or a different tasting food. • “eat as much as you like until you feel comfortably full”

  7. Results • Women’s consumption did not vary greatly by condition • Men ate more in CC and IC conditions • Conclusion: by giving the participants a different food to taste and rate during the consumption of the snack, the amount of food eaten was increased in comparison to tasting, eating, and rating the same food.

  8. Results Continued

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