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Abstract

The results of functional analyses of problem behavior can sometimes be undifferentiated. This lack of differentiation might be due to methodological problems or the absence of variables relevant to problem behavior in the assessment. The current case example provides a clarification of undifferentiated functional analysis results through the inclusion of a particular reinforcer that was not a part of the initial functional analysis. In addition, treatment data showed a decrease in problem behavior when the putative reinforcer was provided response-dependently or response-independently. Copyright © 2009 John Wiley & Sons, Ltd.