“…Research in each of these fields stresses the problems of adherence to and persistence with a diet regimen, relapse, as well as weight regain (Bray, 1987;Brownell & Jeffery, 1987;Golay, Schutz, Felber, Jallut, & Jequier, 1989;Jordan, Canavan, &Steer, 1987;Kramer, Jeffery, Forster, & Snell, 1989;Lukert, 1982;Roughan, Seddow, & Vernon-Roberts, 1990;Stunkard, 1988aStunkard, , 1988b. Human obesity is an heterogenous syndrome (Bennett, 1986;Brownell & Jeffery, 1987;Kramer et al, 1989), and weight loss or regain occurs as a result of a combination of biological, cultural and psychological factors that originally caused the obesity (Brownell & Jeffery, 1987;Feuerstein, Papciak, Shapiro, & Tannenbaum, 1989;Jonson, Bjorvell, Espinark, Levander, & Rossner, 1986;Jordan, Canavan, & Steer, 1986;Kramer et al, 1989;Leon, 1982;Williamson & Levy, 1988). Studies that have tried to account for relapse and regain have used several models: biological, social, learning, and personality (Bjorvell, Edman, & Schalling, 1989;Jonson et al, 1986;Kramer et al, 1989;Lukert, 1982;Stalonas, Perri, & Kerzner, 1984;Stunkard, 1988aStunkard, , 1988b.…”