The project was renewed in April 1992 and included four studies. Study 1 determined whether there were long-term benefits to food provision by reexamining the 202 participants in the original study one year after the end of treatment. Study 2 investigated the factors related to the successful food provision intervention by comparing the additive effects of standard behavioral treatment and the three central components of food provision: structured meal plans, prepackaged food and subsidy of the food. It also explored theoretical mechanisms which might underlie the food provision effect, specifically decision making and stimulus control. Study 3 evaluated the effectiveness of extending the food provision methodology to families. Overweight spouse pairs were randomized to treatments in which either one member of the pair participated in treatment and received food, or both members of the pair participated and were provided with food. Study 4 determined whether the principles of antecedent control could also be applied to exercise. Participants were randomized to weight control programs which included either the usual exercise instructions or structured plans for exercise and free passes to exercise facilities near their home. It was hypothesized that providing food for the obese spouse as well as the patient, and providing antecedent control for exercise through structured plans and free passes would both improve the maintenance of weight loss.