The Boundary Model- Success of Dieting

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  • Failure of Dieting
    • When dieting, we set a COGNITIVE limit
      • Therefore dieters, have two boundaries, physiological and cognitive.
        • They will eat until their cognitive boundry
          • If they eat within the cognitive boundary they reduce calories and maintain successful weight loss
            • This prevents them from dis-inhibited eating
    • Contradictory evidence by Herman and Mack
      • Gave a group of dieters and non dieters  either a low or high calorie pre load
        • non dieters
          • Ate less after having a high calorie preload
        • dieters
          • ate more after a high calorie preload than a low calorie preload
          • Experienced the what the hell effect
    • Most research carried out in a lab/controlled conditions
      • allows a cause and effect to be established
      • high reliability and validity
      • low levels of ecological validity due to artificial conditions
        • hard to generalise what dieting in the  real world is like
    • Supporting Evidence by Laessle
      • Vegetarians manage to abstain from eating meat
      • Further Evidence is anorexics, who eat within cognitive boundries
      • found that some dieters can reduce intake by 400 kcal's less than unrestrained eaters
        • She found they eat less food high in carbohydrates and fat
    • A holistic approach is the best
      • shows the interaction between psychological and physiological processes
  • Supporting Evidence by Laessle
    • Vegetarians manage to abstain from eating meat
    • Further Evidence is anorexics, who eat within cognitive boundries
    • found that some dieters can reduce intake by 400 kcal's less than unrestrained eaters
      • She found they eat less food high in carbohydrates and fat

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