Practice Lab · Free play

Experimental design practice questions

Practice identifying single-case designs and judging what they show about experimental control. 44 free questions across RBT, BCaBA and BCBA levels, with instant feedback. No account needed.

What this covers

  • Reversal (ABAB) designs
  • Multiple baseline designs
  • Alternating treatments and changing criterion
  • Internal and external validity

Sample question · BCaBA exam · Experimental Design

A BCaBA is working with a family to reduce a child's disruptive vocalizations during mealtimes at home. They implement a differential reinforcement of other behavior (DRO) procedure, where the child earns praise and a small edible for 5-minute intervals free of disruptive vocalizations. The BCaBA measures the frequency of disruptive vocalizations and the duration of mealtimes. Which of the following best represents the dependent variable?

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Practice only — not an official BACB result or competency determination. Questions are original practice items, not real exam questions.