Date of Award


Document Type


Degree Name

Master of Science (MS)


Behavioral Analysis

First Advisor

David Wilder

Second Advisor

Felipa Chavez

Third Advisor

Christopher Podlesnik

Fourth Advisor

Mary Beth Kenkel


Noncompliance is a common behavior problem exhibited by individuals who are typically developing as well as individuals with intellectual disabilities. The high probability sequence, an antecedent intervention, has proven to be effective to increase compliance to instructional demands. The high probability sequence involves presenting instructions with which an individual is likely to comply (highp), followed by an instruction with which the individual is not likely to comply (low-p). Typically, three high-p instructions are presented before presenting the low-p instruction. The current study compared different ratios of high-p to low-p instructions (1:1, 3:1, and 5:1) to determine if there is a most effective ratio. In addition, participant preference for various ratios was also examined. Results showed that the 5:1 ratio was most effective at increasing compliance, and ratio preference was idiosyncratic across participants.


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