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Lewis, Mark H.; And Others – Journal of Applied Behavior Analysis, 1987
In response to a previous article proposing perceptual reinforcement of stereotyped movements in autistic and mentally retarded persons, it is argued that this theory fails to take into account biological findings and theory regarding pathological stereotyped acts. An alternative theory derived from neurological concepts is suggested. (Author/DB)
Descriptors: Autism, Behavior Patterns, Neurology, Perception

Newsom, Crighton; Lovaas, O. Ivar – Journal of Applied Behavior Analysis, 1987
The authors respond to criticism of their paper proposing a perceptual reinforcement of stereotyped movements in autistic and mentally retarded persons. The alternative theory based on neurobiological factors is judged to be insufficiently detailed and inadequate in scope. (Author/DB)
Descriptors: Autism, Behavior Patterns, Mental Retardation, Perception

Green, Carolyn W.; And Others – Journal of Applied Behavior Analysis, 1994
Three experiments were conducted involving five people with profound multiple disabilities, to determine whether variations in alertness affected subsequent responsiveness to training programs. Findings suggest that existing levels of alertness do not indicate how individuals will respond during training and that alertness actually can be…
Descriptors: Adults, Behavior Patterns, Multiple Disabilities, Perception