Brace Aaron, Yeomans Martin R
School of Psychology, University of Sussex, Brighton BN1 9QH, UK.
School of Psychology, University of Sussex, Brighton BN1 9QH, UK.
Eat Behav. 2016 Apr;21:18-23. doi: 10.1016/j.eatbeh.2015.12.001. Epub 2015 Dec 19.
Data collected over the last decade has begun to implicate behavioural impulsivity in overeating behaviour. However, recent work has suggested that the reinforcing value of food may be associated with impulsive choice (a sub-type of impulsivity), but to date no study has examined how the reinforcing value of food relates to other aspects of impulsivity. To examine these inter-relationships, 80 women completed measures of eating (a snack intake test and the Three-Factor Eating Questionnaire and then in a separate test session an inhibitory control task, a delay discounting task, a reflection impulsivity task, and a measure of the reinforcing value of their chosen snack foods. Participants also completed the Behavioural Inhibition System/Behavioural Activation System (BIS/BAS) questionnaire to examine self-report and behavioural parallels between measures. In regression models, only Behavioural Inhibition System subscales of the BIS/BAS predicted increased responding on the reinforcing value of food task. The reinforcing value of food task predicted and trended to predict calorie and grams intake of snack foods in regression models, supporting RRV as a predictive measure of short-term snack intake. Likewise, impulsive choice and inhibitory control was not related to eating measures. Methodological implications are discussed.
过去十年收集的数据已开始表明行为冲动性与暴饮暴食行为有关。然而，最近的研究表明食物的强化价值可能与冲动选择（冲动性的一种亚型）有关，但迄今为止，尚无研究考察食物的强化价值与冲动性的其他方面之间的关系。为了研究这些相互关系，80名女性完成了饮食测量（一项零食摄入量测试和三因素饮食问卷），然后在另一个测试环节中完成了一项抑制控制任务、一项延迟折扣任务、一项反射冲动任务以及对她们所选零食的强化价值的测量。参与者还完成了行为抑制系统/行为激活系统（BIS/BAS）问卷，以检验各测量之间的自我报告和行为相似性。在回归模型中，只有BIS/BAS的行为抑制系统分量表预测了在食物强化价值任务上反应的增加。食物强化价值任务在回归模型中预测并趋向于预测零食的卡路里和克数摄入量，支持将相对强化价值作为短期零食摄入量的预测指标。同样，冲动选择和抑制控制与饮食测量无关。本文讨论了方法学上的意义。
