Behaviorist Book Club: Quick ABA Research to Practice
Jul 29, 2025
Evaluating Preference for Functional and Nonfunctional Stimuli in FCT | Behaviorist Book Club
Bonus Episode 5: Evaluating Preference for Functional and Nonfunctional Stimuli in the Treatment of Destructive Behavior
In this 12-minute bonus episode, we explore Helvey et al.’s (2023) brief report on whether combining a functional reinforcer (like escape) with a nonfunctional but preferred stimulus influences learner preference and treatment outcomes in Functional Communication Training (FCT). These show notes outline conceptual foundations, study design, key results, and my clinical takeaways. The isolated versus synthesized functional analysis debate has dominated ABA discourse for years. Instead of fueling that binary, Helvey et al. move forward—asking whether adding nonfunctional reinforcers to FCT improves preference and social validity without sacrificing efficacy. Introduced by Iwata et al. (1994/1995), the isolated FA tests each reinforcer separately, providing high experimental control and clear identification of functions. Hanley et al. (2014) developed IISCA to replicate natural environments where multiple establishing operations (EOs) and reinforcers often co-occur. This approach boosts ecological validity, though critics argue it risks “over-reinforcement.” Does adding a nonfunctional reinforcer (e.g., a preferred toy) to a function-based reinforcer enhance preference and caregiver buy-in without undermining treatment? Both conditions (escape alone and escape + tangible) reduced destructive behavior to near zero. Caregivers preferred the combined option for ease of implementation and ecological validity. This study bridges the gap between isolated and synthesized approaches, offering a practical strategy to enhance client preference without compromising efficacy. Adding a little “extra” can make interventions more naturalistic, improve buy-in, and strengthen long-term success.Episode Overview
1. Why I Chose This Article
2. Conceptual Foundations
2.1 Isolated Functional Analysis
2.2 Synthesized Functional Analysis (IISCA)
2.3 The Key Question
3. Helvey et al. (2023) Study Overview
4. Results
4.1 Problem Behavior Reduction
4.2 Preference Assessment
4.3 Social Validity
5. Clinical Takeaways
6. Practical Steps for Your Next Case
7. Key References
8. Final Reflections
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