In single-subject experimental designs, what is the term for the reasoning involving prediction, verification, and replication?

• A. Baseline
• B. Behavior
• C. Baseline Logic
• D. Behavior Change Tactic

Answer: (C)

In single-subject designs, the reasoning that supports demonstrating a functional relation is Baseline Logic. This approach rests on three parts: prediction, verification, and replication. Prediction means you anticipate how the behavior should change if the intervention has an effect, such as a shift in level, trend, or variability once treatment starts. Verification involves checking that the observed change occurs in the presence of the intervention and aligns with the prediction, not just during baseline or by random fluctuation. Replication means repeating the pattern across additional data segments or conditions to show the effect is systematic and reliable, not a one-time happenstance. Baseline, by contrast, is simply the initial measurement period; it’s not the reasoning itself. The term Behavior is the target response, not the explanatory framework, and Behavior Change Tactic isn’t the established label for this logic.