The goal of this observational study is to understand how children's food preferences, physical activity, and decision-making change over time and how these behaviors relate to body weight and overall health.

A cohort sequential design will be used to track 2 cohorts of children aged 8.5-9 years 11 months, and 10.5-11 years 11 months over a 3 year period to understand how the development of food and activity reinforcement and delay discounting could lead to the development of childhood obesity in children aged 9-14.

Inclusion Criteria:

• Male and female children
• Black, Indigenous, and People of Color (BIPOC) or Hispanic families
• Children from low SES families (as defined by household education, eligibility for government assistance)
• Children in overweight/obese category (defined by range in each cohort)

Exclusion Criteria:

• Medical causes for obesity
• Stature below the 5th percentile
• Physical activity restrictions
• Psychopathology
• Medication use that affects activity or appetite
• Children that spend less than 65% of their time in participating parent's household
• BMI percentile criteria
• Liking of study foods and activities
• Dietary restrictions and food allergies

Male and female children of varying racial/ethnic backgrounds, SES backgrounds, and varying body compositions