Graduation Year

2024

Document Type

Dissertation

Degree

Ph.D.

Degree Name

Doctor of Philosophy (Ph.D.)

Degree Granting Department

Child and Family Studies

Major Professor

Raymond G. Miltenberger, Ph.D.

Committee Member

Kwang-Sun Blair, Ph.D.

Committee Member

Kimberly Crosland, Ph.D.

Committee Member

Diego Valbuena, Ph.D.

Keywords

behavioral interventions, exercise promotion, adolescents, neurodevelopmental disorder

Abstract

The United States Department of Health and Human Services (2018) recommends that teenagers engage in physical activity to improve their cardiovascular health and muscle and bone strength. Yet, most teenagers with and without autism spectrum disorder do not meet the recommended guidelines for physical activity. Research related to promoting physical activity has evaluated group contingencies, reinforcement-based interventions, and antecedent interventions; however, these interventions are time-intensive, require many resources, or are ineffective. The purpose of this study was to extend Allen and Iwata (1980) by reinforcing completion of a low-probability exercise to a specified criterion with access to a high-probability exercise. This study was conducted at a dance studio or in the participant’s home. Five teenagers with autism spectrum disorder participated in phase one where the researchers conducted preference assessments of target exercises. These target exercises were body weight exercises, core training exercises, and weight training exercises that were individualized to each participant. Of the five teenagers, three teenagers participated in phase two where the researcher systematically increased criterion for the low-probability exercise to access the high-probability exercise using a changing criterion design. Experimental control was also demonstrated using a multiple baseline design across three participants where they successfully increased their performance of the low-probability exercise to access the high-probability exercise. The researchers conducted preference assessments again to determine any shifts in preference. Limitations and future directions were discussed.

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