“…Most noteworthy is the application of multifactorial treatment packages to the multiply handicapped population, including profoundly retarded deaf-blind (Lancioni, 1980), profoundly retarded nonambulatory (Edgar et al, 1975), trainable mental ly retarded with behavior disorders (Watts, 1977), a blind retarded child (Waye & Melnyr, 1973), and those with severe neurological impairments, including Wilson's Disease (Jarrett, Gauthier & Oliver, 1978), Hirschsprung's Disease (Epstein & McCoy, 1977;Kohlenberg, 1973), and spina bifida (Butler, 1976). These studies offer potential solutions to the complex toilet training problems of the severely and profound ly retarded population, as well as physically handi capped populations with similar complex handicaps.…”