Explanations for the Success and Failure of Dieting

Herman and Polivy's (1984) Boundary Model
1. Combines physiology and psychological cognitive processes
2. Weight s/p. - Biological mechanisms. Weight reduces... Psychological / Cog/ boundaries
3. Unrestrained eats til biological s/p. Restrained until Cog/ boundary.
4. Lapses - "WTH effect"
5. Herman + Mack (1975) - "preloading technique", 45 female students, 3 groups - Taste test - milkshakes
6. Mostly lab based experiments (ecological validity) Dieting in real world more complicated issues. Theory oversimplified.
Body Weight Set-Point Theory + Metabolic Rate
1. Evolutionary approach: Dieting below s/p -body tries to restore. Adaptive: famine in hunter gatherer era.
2. Reduce BMR - dieter takes in less cals + using fewer. Opposed to exercise which increases BMR.
3. Deterministic - suggests bio/ processes responsible for failure but is an interaction.
4. Imp/ practical applications - Kids - walk/cycle better than reducing food.
Evidence for no. genetic mechanisms inf/ weight + dieting - always difficult for those with predisposition to obesity.
1. Kern et al. (1990) - levels of enzyme (helps body store fat) - high after obese lost av/ 90lbs. Weight loss activated gene - body fighting to regain lost weight.
IDA - Applications - low fat/sugar, lifestyle changes (ex/), group + indiv/ support. Smaller, gradual weight loss sustained longer. Success = interaction.

Resumo de Recurso

	Criado por Stephanie Bates mais de 10 anos atrás