Effect of Observing-Response Procedures on Overselectivity in Individuals With Autism Spectrum Disorders

Stimulus overselectivity occurs when one aspect of the environment controls behavior at the expense of other equally salient aspects. Stimulus overselectivity can be reduced for some individuals with learning disabilities, if they engage in an observing response in which they point to, touch, or name each of the stimuli prior to selecting the one requested. To see whether this would apply to another population, a total of 55 participants with autism spectrum disorders (ASD) were trained on match-to-sample (MTS), or simple discrimination tasks, to determine whether overselectivity could be eliminated by using an observing response. MTS tasks were presented in a table-top format as well as on a computer. The observing-response procedure did not eliminate overselectivity for any of the participants, regardless of age, task, or format of presentation. These results are interpreted to call to question the effectiveness of this procedure in this context for individuals with ASD.