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Differential associations between obesity and behavioral measures of impulsivity

机译：肥胖与冲动行为量度之间的差异关联

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A growing literature indicates that impulsivity is a fundamental behavioral process that underlies obesity. However, impulsivity is a multidimensional construct, which comprises independent patterns of decision-making that could be uniquely associated with obesity. No research to date has clarified whether obesity is differentially associated with specific behavioral aspects of impulsivity. This study examined whether obesity was differentially associated with patterns of decision-making associated with impulsivity delay discounting, probability discounting, and response inhibition. Young adults (n = 296; 443% male) age 18-30 were recruited from the community with media advertisements. Participants completed a series of standard self-report measures of health outcomes and behavioral measures of delay discounting, probability discounting, and response inhibition individually in a laboratory. Associations between body mass index (BMI) and behavioral outcomes in the whole sample indicated that BMI was associated with age, delay discounting, and probability discounting, but not response inhibition. A logistic regression that included age, sex, and substance use as covariates found that delay discounting, but neither probability discounting nor response inhibition, was associated with obesity status. Sensitivity to delay, rather than response inhibition and sensitivity to uncertainty, may be the best correlate of obesity status in adults. These findings are relevant to our understanding of the fundamental behavioral processes associated with obesity. (C) 2015 Elsevier Ltd. All rights reserved.
机译：越来越多的文献表明，冲动是肥胖的基础行为过程。然而，冲动性是多维结构，包括独立的决策模式，可能与肥胖症有独特的联系。迄今为止，尚无研究明确肥胖与冲动的特定行为方面是否存在差异。这项研究检查了肥胖是否与冲动性延迟折扣，概率折扣和反应抑制相关的决策模式有差异。通过媒体广告从社区招募了18至30岁的年轻人（n = 296;男性443％）。参与者分别在实验室中完成了一系列关于健康结果的标准自我报告措施以及延迟折扣，概率折扣和反应抑制的行为措施。整个样本中的体重指数（BMI）与行为结果之间的关联性表明，体重指数与年龄，延迟折扣和概率折扣相关，但与反应抑制无关。包括年龄，性别和药物使用作为协变量的逻辑回归分析发现，延迟贴现与肥胖状况无关，但概率贴现或反应抑制均无相关性。对延迟的敏感性，而不是对反应的抑制和对不确定性的敏感性，可能是成年人肥胖状况的最佳关联。这些发现与我们对肥胖相关的基本行为过程的理解有关。 （C）2015 Elsevier Ltd.保留所有权利。

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