Confusable concepts library
The RBT and BCBA exams live off pairs that look identical. Each explainer puts the two concepts side by side, with the rule to tell them apart and worked examples — free, in English and Spanish.
Domain B — Concepts and Principles
Negative reinforcement vs. positive punishment
Both involve an unpleasant stimulus, which is why they get confused.
Negative reinforcement vs. negative punishment
Both remove a stimulus, which is why they get confused.
Discriminative stimulus (Sᴰ) vs. S-delta (SΔ)
Both are antecedents that control behavior.
Discriminative stimulus (Sᴰ) vs. motivating operation (MO)
Both are antecedents that increase behavior — one of the exam's costliest confusions.
Topography vs. function of behavior
People assume behaviors that look the same are the same thing.
Respondent vs. operant conditioning
Both are types of learning.
Stimulus generalization vs. discrimination
Both describe how a stimulus controls behavior.
Ratio vs. interval schedules
Both deliver intermittent reinforcement.
Mand vs. tact
Both are productive verbal operants.
Domain F — Behavior Assessment
Domain G — Behavior-Change Procedures
Can you tell these pairs apart under pressure?
Take the free 10-question practice test and see exactly which domains you'd fail today — with the reasoning behind every answer.
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