Eating Behaviour: Successful or Failure Dieting

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Define weight loss re-gainer.
People who are stable obese= unsuccessful dieter.
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Define weight loss maintainer.
People who had previously been obese ad had kept weight off for 3 years= successful dieter.
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Who created the Boundary model?
Herman and Polivy.
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What is the Boundary Model?
Explains why dieting can lead to overeating: cognitive boundaries are set that depend on how much they think they're allowed to eat, but occasionally they will go over the boundary and will then binge until they reach their physiological boundary.
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What study can be used to support the Boundary Model?
Wardle and Beales.
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What did Wardle and Beales do?
27 obese women placed in 3 groups (diet, exercise and control group) and monitored for 7 weeks. During the study they did lab exp's designed to test their food intake.
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What did they find? How does this support the Boundary Model?
Participants in the diet group ate more than the other 2 groups. Supports link between dieting and overeating- overeating seems to be caused by attempts at dieting.
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Evaluate Wardle and Beales
+ = experimental design (high int. val), non-student, paved way for future research. - = random allocation (extr. vari's), small sample size, alternative agendas of p's, unnatural setting (demand charact's, hawthorne effect).
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What did Herman and Mack do?
Compared 45 female students that were 'restrained eaters' and 'unrestrained' in 3 cond's: 1. No preload (eat nothing) 2. Low Cal preload (low cal food- 1 milkshake) 3. High Cal preload (high cal food- 2 milkshakes)
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What did they do after eating?
P's were told they were doing taste pref test of 3 tubs of ice cream & left alone to eat as much or as little as wanted. 10 mins to rate taste. DV= how much of the food they ate.
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What did Herman and Mack find?
Unrestrained eaters compensated for high cal preload by eating less on the taste-test but restrained ate MORE on the taste-test if they had high cal preload.
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Why did the dieters (restrained eaters) eat more if they had a high cal preload?
Because of disinhibition (eating more as a result of restraints being loosened). Also, Boundary Model= overeating caused by attempts at dieting.
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Evaluate Herman and Mack.
+ = changed view of dieting, scientific credibility. - = small sample size, unethical: no inf. consent/deception.
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What 2 studies can be used to show successful dieting?
Ogden & Hills and Powell, Calvin & Calvin.
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What did Ogden and Hills do/find?
Interviews w/ successful dieters & found 4 long-term factors in common: 1. hold behaviour as central to their weight problem. 2. avoid denial that they're not hungry when they are. 3. remove food as a reward. 4. establish new identity as thinner.
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What did Powell, Calvin and Calvin suggest?
dieting also successful when combined w/ other lifestyle changes: physical exercise, group/ind support, monitor own progress to incr. self control.
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Evaluation of Issues and Debates.
Gender Bias (mostly females used), culture bias (mostly american) and is psychology a science?
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Card 2

Front

Define weight loss maintainer.

Back

People who had previously been obese ad had kept weight off for 3 years= successful dieter.

Card 3

Front

Who created the Boundary model?

Back

Preview of the front of card 3

Card 4

Front

What is the Boundary Model?

Back

Preview of the front of card 4

Card 5

Front

What study can be used to support the Boundary Model?

Back

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