The outcome-representation learning model: impairments in decision-making in adolescents with excess weight

Abstract Impairments in decision-making have been suggested as a predisposing factor to obesity development. Individuals with excess weight display riskier decisions than normal people. Furthermore, adolescence is period of life which risky behavior may increase. We aimed investigate decision making applying the Outcome-Representation-Learning (ORL) model Iowa Gambling Task (IGT) adolescents weight. Twenty-nine and twenty-eight adolescents, classified according their age-adjusted body mass index (BMI) percentile, participated study. Decision-making was measured using IGT. A Bayesian computational ORL applied assess reward learning, punishment forgetfulness, win perseverance deck perseverance. The IGT net score lower ( β = 2.85; p < .027). Reward learning (95% HDI [0.011, 0.232]) higher, while forgetfulness [− 0.711, − 0.181]) 3.349, 0.203]) were lower, adolescents. Excess seemed better at most rewarding choices showed random strategy based on novelty seeking. Consequently, made more disadvantageous selections, performed worse