 We plan to examine whether child and parental cognitiveexecutive function predict body composition outcomes and adherence to a 6-month protocol of Family-Based Behavioral Treatment FBT, for pediatric obesity. Our objectives are to: 1 examine the effects of parent and child complex cognitive functions on treatment outcomes and adherence in a 6-month FBT program for obesity in a diverse group of children aged 8-12 total of 16 child-parent pairs, and 2 examine the strength of the relationship between parent and child cognitive function. We hypothesize that children with poorer executive function, and those who have parents with poorer executive function, will have poorer body composition and adherence outcomes. 