“…Depression, how to anticipate reinforcing situations, how to systematically engage in reinforcing activities, how to use the Premack Principle to refocus cognitions (Lazarus, 1968;Burgess, 1969;Todd, 1972). Depression, how to anticipate reinforcing situations, how to systematically engage in reinforcing activities, how to use the Premack Principle to refocus cognitions (Lazarus, 1968;Burgess, 1969;Todd, 1972).…”