Everything on this page is free and works in English and Spanish. Start with the practice test that matches your exam, find your weak domains, then use the explainers to fix the concept pairs you confuse.
1. An RBT measures the time between when a teacher gives an instruction and when the client begins to respond. This measurement describes:
A.Duration
B.Latency
C.Interresponse time (IRT)
D.Rate
Show answer & explanation
Correct answer: B. Latency
Latency is the time between the onset of a stimulus (the teacher's instruction) and the initiation of the response. Duration would measure how long the behavior lasts once it starts — latency measures how long it takes to start.
BCBA · Domain B — Concepts and Principles
2. A child says "doggy" when she sees a cat for the first time. This is an example of:
A.Stimulus discrimination
B.Stimulus generalization
C.Response generalization
D.Intraverbal behavior
Show answer & explanation
Correct answer: B. Stimulus generalization
The SAME response ("doggy") occurs in the presence of a similar but NEW stimulus (the cat) — stimulus generalization. Response generalization would be a new response to the same stimulus; discrimination would be responding differently to dogs vs. cats.
Quick answers
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Yes — the practice test, the sample questions, and the entire concept library are free, no credit card required. The full adaptive question bank and long mock exams are part of ABA Sensei Pro.
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No account is needed for the sample questions or the concept explainers. The 10-question practice test asks for your email so it can send you your domain-by-domain report.
Is everything available in Spanish?
Yes. Every resource here exists in Spanish and English, and the explanations keep the English technical terms — because the exams use them.
RBT or BCBA — which track is for me?
RBT (Registered Behavior Technician) is the entry-level certification with an 85-question exam. BCBA (Board Certified Behavior Analyst) is the graduate-level certification with a 185-question exam. Pick the track that matches the credential you're pursuing.
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