Abstract
Adaptive behavior is defined as those interactions of an individual with the environment that are functionally effective in that environment. Using this definition it is shown that adaptive behavior instruments that are environmentally relevant can be used effectively in intervention planning. Five characteristics desirable in such instruments are listed. Selected instruments are reviewed, including the Adaptive Behavior Scale, Vineland Adaptive Behavior Scales, Scales of Independent Behavior, and The Pyramid Scales. A systems approach to assessing adaptive behavior is described, and it is argued that the multiple functions of adaptive behavior assessment require a set of carefully interrelated assessment procedures. No single instrument is sufficient. An example of such a system is presented and it is shown how using it can lead to the production of long-range, annual, monthly, and short-term goals, as well as to the identification of immediate instructional objectives.
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