Skylar DeWitt

Date Approved

2024

Degree Type

Open Access Thesis

Degree Name

Master of Science (MS)

Department or School

Psychology

Committee Member

Adam M. Briggs, Ph.D., BCBA-D, LBA, Chair

Committee Member

Thomas J. Waltz, Ph.D., Ph.D.

Committee Member

James T. Todd, Ph.D.

Abstract

Differential reinforcement of alternative behavior (DRA) plus extinction for problem behavior is an evidence-based intervention for individuals diagnosed with autism. However, researchers have recently begun investigating DRA without extinction, given this treatment component may be unsafe or impractical to implement in practice. Although preliminary research has indicated DRA without extinction as an effective intervention alternative, little is known about the long-term implications of this intervention, especially as it relates to resurgence. This study investigated resurgence following DRA with and without extinction using a three-phase resurgence assessment in a human-operant arrangement across 60 college-aged participants. Several study iterations were required to address technical and procedural limitations, which are documented and described in detail within this document. The results of the final iteration showed no statistically significant differences in the prevalence, magnitude, or persistence of resurgence between groups. Discussion of these findings, clinical implications, and directions for future translational research are discussed.

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