Franken Ingmar H A, Muris Peter
Institute of Psychology, Erasmus University Rotterdam, Woudestein J5-43, P.O. Box 1738, 3000 DR Rotterdam, The Netherlands.
Appetite. 2005 Oct;45(2):198-201. doi: 10.1016/j.appet.2005.04.004.
According to the theory of J.A. Gray, a strongly reactive approach system is highly sensitive to reward or to cues that signal reward. This implies that intake driven by the rewarding properties of food should be affected by individual differences in reactivity of the approach system. The present study examined whether reward sensitivity is associated with food craving and relative body weight in a sample of female college students. Participants completed the Sensitivity to Punishment and Sensitivity to Reward Questionnaire and the trait version of the Food Craving Questionnaire and also reported their weight and height in order to compute Body Mass Index (BMI). Sensitivity to reward was significantly related to food craving and BMI. Furthermore, the correlation between reward sensitivity and BMI was not attenuated when the influence of food craving was partialled out, indicating that the relation between sensitivity to reward and BMI was not mediated by food craving. This is the first study demonstrating a relation between the personality trait of sensitivity to reward and BMI. These findings are discussed in the context of the involvement of dopaminergic reward circuitry in overeating.
根据J.A.格雷的理论，一个反应强烈的趋近系统对奖励或预示奖励的线索高度敏感。这意味着由食物的奖励特性驱动的摄入量应该会受到趋近系统反应性个体差异的影响。本研究调查了奖励敏感性是否与女大学生样本中的食物渴望及相对体重相关。参与者完成了惩罚敏感性和奖励敏感性问卷以及食物渴望问卷的特质版本，并报告了他们的体重和身高以计算体重指数（BMI）。奖励敏感性与食物渴望和BMI显著相关。此外，当排除食物渴望的影响时，奖励敏感性与BMI之间的相关性并未减弱，这表明奖励敏感性与BMI之间的关系并非由食物渴望介导。这是第一项证明奖励敏感性人格特质与BMI之间存在关联的研究。我们将在多巴胺能奖励回路参与暴饮暴食的背景下讨论这些发现。
