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Investigation of the Association between the Relative Reinforcing Value of Food in 3 Year-Old Children With Body Weight and Composition: The Choice and Motivation in Preschooler Snacking (CHAMPS) Study

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Title: Investigation of the Association between the Relative Reinforcing Value of Food in 3 Year-Old Children With Body Weight and Composition: The Choice and Motivation in Preschooler Snacking (CHAMPS) Study
Author: Wong, Samantha
Department: Department of Family Relations and Applied Nutrition
Program: Applied Nutrition
Advisor: Haines, Jess
Abstract: The relative reinforcing value of food (RRVF; how hard a child is willing to work for a food versus non-food reinforcer) and weight are strongly associated across many life stages, but few studies exist among preschool age children. Linear regression was used to investigate the association between the RRVF (measured as the food reinforcing ratio (FRR)) and body mass index (BMI) z-score and percent fat mass (%FM) among thirty-three 3 year old children. Food parenting practices were investigated as potential moderators. The food (cookie) versus non-food (audiobook) reinforcer design was delivered using a sequential progressive fixed ratio reward schedule. FRR was positively associated with BMI z-scores. No significant associations were found between FRR and %FM. Restriction for Health moderated the association between FRR and BMI z-scores. There was no evidence for moderation by the other food parenting practices explored.
URI: http://hdl.handle.net/10214/14117
Date: 2018-08
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