Dieting as a case of behavioural decision making. Does self-control matter
2008
Kuijer, Roeline | de Ridder, Denise | Ouwehand, Carolijn | Houx, Bart | van den Bos, Ruud
To be a successful dieter, one has to be able to consistently resist immediate temptations in order to achieve the bigger, but delayed rewards of weight loss, increased attractiveness and better health. These long-term benefits are by no means guaranteed as the delayed rewards are more uncertain than the immediate rewards. Several researchers have suggested that the population of restrained eaters consists of two populations: unsuccessful dieters who score high on restraint and high on disinhibition, and successful dieters who score high on restraint but low on disinhibition. The present study examines to what extent restrained eating in combination with individual differences in self-control (akin to low disinhibition) is related to successful decision making on a task that mimics the uncertainty of dieting (measured with the Iowa Gambling Task). As expected, self-control moderated the association between restraint and decision making: restrained eating was related to worse decision making when self-control was low, but to better decision making when self-control was high. This suggest that those high in restraint and high in self-control may be more successful in their dieting attempts because they are generally better at inhibiting short-term rewards in order to gain better long-term outcomes.
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