Play versus alone conditions as controls during functional analyses of self-injurious escape behavior

We compared the effects of continuous reinforcement (play) and alone conditions a controls during functional analyses for 66 individuals whose self-injurious behavior (SIB) was maintained by escape. In every case, SIB was lower during both control conditions than it was during the test (demand) condition. However SIB was lowest during the alone condition more often than it was during the play condition. Circumstances unde which the alone condition might serve as an alternative or more suitable control for escape-maintained problem behaviors are discussed.