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A New Analysis on Self-Control in Intertemporal Choice and Mediterranean Dietary Pattern

机译：跨期选择和地中海饮食模式自我控制的新分析

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This paper completes Muñoz Torrecillas et al. () results and conclusions investigating the relationship between adherence to healthy dietary habits, specifically the Mediterranean Diet (hereinafter, MD), and impulsivity in intertemporal choices. Impulsivity can be defined as the strong preference for small immediate payoffs over larger delayed payoffs, and in the original study this behavior was captured by the parameter k (discount rate of the hyperbolic discount function), calculated using an automated scoring mechanism. Adherence to MD was measured by the KIDMED index and then grouped into three levels: high, medium, and low. While the authors observed that individuals in the high adherence group had the shallowest discounting and individuals in the low adherence group had the steepest discounting, the data were not statistically analyzed in depth. Therefore, the purpose of the present paper is to propose a preliminary quantitative model for this relationship and evaluate its significance. Tests revealed a significant interaction between adherence to MD and magnitude of delayed rewards when predicting discount rates. Specifically, the degree to which impulsivity decreases as adherence to MD increases is strongly influenced by delayed rewards of smaller magnitude. These findings are consistent with the authors' claims that healthy dietary habits may be closely linked with greater self-control when payoffs are small, and thus warrant further examination. The results do not indicate causality though, so future studies could also investigate the directions of this relationship as a means of developing behavioral interventions.
机译：本文完成了MuñozTorrecillas等人的文章。 （）的结果和结论，研究了坚持健康饮食习惯（尤其是地中海饮食（以下简称MD））与跨时选择中的冲动之间的关系。冲动性可以定义为对较小的即期收益比对较大的时延收益的强烈偏好，并且在原始研究中，此行为由参数k（双曲线折扣函数的折现率）捕获，该参数是使用自动评分机制计算的。通过KIDMED指数测量对MD的依从性，然后将其分为三个级别：高，中和低。虽然作者观察到，高依从性组的个体具有最浅的折现，而低依从性组的个体具有最强的折现，但并未对数据进行深入的统计分析。因此，本文的目的是为这种关系提出初步的定量模型并评估其重要性。测试显示，在预测折现率时，遵守MD和延迟奖励的幅度之间存在显着的相互作用。具体地，随着对MD的遵守增加，冲动性降低的程度受到较小幅度的延迟奖励的强烈影响。这些发现与作者的观点一致，即当收益很小时，健康的饮食习惯可能与更高的自我控制能力密切相关，因此值得进一步检查。结果并未显示因果关系，因此未来的研究也可以调查这种关系的方向，以此作为制定行为干预措施的手段。

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