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Results

#1. A Board Certified Behavior Analyst (BCBA) is implementing a multiple baseline design across three participants to assess the impact of a social skills training program on initiating peer interactions. To confidently establish a functional relation between the training program (independent variable) and the increase in peer interactions (dependent variable), which of the following outcomes is most critical to observe?

The baseline data for all three participants show a consistent increasing trend prior to intervention.

Peer interactions increase for each participant only after the social skills training program is introduced to that specific participant.

The variability in peer interaction rates during baseline is high across all participants.

The rate of increase in peer interactions is identical for all three participants once the intervention begins.

In a multiple baseline design a functional relation is demonstrated when the behavior change occurs only after and contingent upon the introduction of the independent variable across sequential baselines eg across participants settings or behaviors Option A describes an undesirable baseline trend that would obscure the effect of the intervention Option C describes an unstable baseline which makes it difficult to establish experimental control Option D is not a requirement for establishing a functional relation behaviors may change at different paces or magnitudes across different individuals or conditions as long as the change is clearly linked to the interventions introduction for each baseline The key is the staggered introduction of the intervention and the subsequent behavior change in each baseline series

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