For study 1, 60 families (120 parents) with a child between the age of 2-4 years will be entered to the study. Children of these families will be at risk for overweight because the family will contain at least one obese parent. For study 2, 100 families (200 parents) will be entered to the study. Children of these families will be at risk for overweight and have a reactive temperament. The reason for using this population is that a combination of parental obesity and a child with a reactive temperament appears to put the child at high risk for the development of overweight.&#xA;