CROSS-COMPARISON OF INDICES OF RISK ATTITUDE FROM TWO DISTINCT EXPERIMENTAL PARADIGMS, IN ADULTS AND ADOLESCENTS.

  • Ricardo Gaspar Viegas
  • Armando Mónica Oliveira
  • Ana Garriga-Trillo

Abstract

The Iowa Gambling Task (IGT) has been used to characterize adolescents’ decision making under uncertainty. A conclusion often drawn is that, like ventromedial patients, adolescents tend to go on choosing disadvantageous (risky) card decks. In this study, the IGT and a classic paradigm of choice between lotteries were employed with both adolescents and adults. In the lotteries task, probabilities were also initially unknown to the participants. The lotteries paradigm allowed, moreover, estimating specific parameters of attitude toward risk as well as of attention allocated to negative and positive outcomes. Comparison of the results obtained from both paradigms provide a more nuanced and less contrasted view of adolescent's decision making as regards adults.

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