Date of Award

12-2025

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Behavioral Analysis

First Advisor

Kimberly N. Sloman

Second Advisor

David A. Wilder

Third Advisor

Jonathan K. Fernand

Fourth Advisor

Robyn Tapley

Abstract

Individuals with autism often engage in stereotypic behavior that competes with learning and social skills. Behavior analytic treatment may be implemented to reduce stereotypy. Noncontingent reinforcement (NCR) is one treatment that is often effective to reduce stereotypy. However, literature suggests that the use of NCR is contraindicated in some circumstances, as it may compete with the acquisition of new skills or may increase subsequent persistence of stereotypy. This research was designed to expand our knowledge of potential limitations of NCR when combined with other treatments. Study one examined persistence of stereotypy following treatment with NCR with and without response blocking. Overall, persistence was greatest following NCR with response blocking and lowest following NCR. Study two examined the effects of NCR to treat stereotypy on the rate of manding for other alternative items that also compete with stereotypy. Two out of three participants did not mand when NCR was in place. Additionally, study two evaluated subsequent effects of NCR on manding for preferred items after NCR has been removed. Two out of three participants engaged in fewer mands following NCR.

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