Replacement—A theory of stereotypy: A review

Abstract

Three forms of stereotypy are described and an outline given of previous theories of simple stereotypy in the retarded and autistic. An alternative theory is put forward in which stereotypy is characterized as a replacement of unpalleatable stimuli and/or responses that are overloading the system in a way with which the individual cannot cope. Although the theory derives from cognitive psychology, it can also be expressed behaviorally or experientially without loss of impact. The manner in which replacement theory applies to the three types of stereotypy is described. Testable hypotheses are derived, predictions made, and implications considered. Finally, the more general ramifications of the theory are explored.