Behavioral Economic Predictors of Overweight Children's Weight Loss
Behavioral Economic Predictors of Overweight Children's Weight Loss
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DOI：
10.1037/a0029827
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发表时间：
2012-12-01
影响因子：
5.9
通讯作者：
Wilfley, Denise E.
中科院分区：
文献类型：
--
作者：
Best, John R.;Theim, Kelly R.;Wilfley, Denise E.
目的：我们的目标是确定行为经济学是否包括冲动性（即，延迟食物和金钱奖励的急剧折扣），食物的相对强化价值（RRVfood），和环境富集（即，在家庭和邻里环境中存在不健康食品的替代品）是超重儿童在家庭治疗中体重减轻的重要预处理预测因素。方法：超重儿童（N = 241;年龄7-12岁; 63%女性; 65%非西班牙裔白色）入组了至少有一位父母参与的16周基于家庭的肥胖治疗。在基线时，儿童完成了一项任务，以评估RRV食品和延迟折扣措施的零食和金钱，以评估冲动。家长们填写了调查问卷，以评估环境丰富程度。结果如下：与没有这种风险因素组合的儿童相比，在基线时发现食物高度强化和未来食物奖励大幅折扣的儿童对治疗的反应迟钝。只有在没有发现食物高度强化的儿童中，高环境富集与治疗成功相关。无论儿童的RRV食物水平如何，货币贴现率都能预测体重减轻。结论：研究是必要的，以新的方法来治疗肥胖症的目标潜在的冲动和RRV食物。丰富的环境与替代不健康的饮食可能有助于减肥，特别是对于低RRV食物的儿童。
Objective: Our goal was to determine whether behavioral economic constructs-including impulsivity (i.e., steep discounting of delayed food and monetary rewards), the relative reinforcing value of food (RRVfood), and environmental enrichment (i.e., the presence of alternatives to unhealthy foods in the home and neighborhood environments) are significant pretreatment predictors of overweight children's weight loss within family-based treatment. Method: Overweight children (N = 241; ages 7-12 years; 63% female; 65% non-Hispanic White) enrolled in a 16-week family-based obesity treatment with at least one parent. At baseline, children completed a task to assess RRVfood and delay discounting measures of snack foods and money to assess impulsivity. Parents completed questionnaires to assess environmental enrichment. Results: Children who found food highly reinforcing and steeply discounted future food rewards at baseline showed a blunted response to treatment compared with children without this combination of risk factors. High environmental enrichment was associated with treatment success only among children who did not find food highly reinforcing. Monetary discounting rate predicted weight loss, regardless of children's level of RRVfood. Conclusions: Investigation is warranted into novel approaches to obesity treatment that target underlying impulsivity and RRVfood. Enriching the environment with alternatives to unhealthy eating may facilitate weight loss, especially for children with low RRVfood.