About us

Helping future RBTs pass with confidence

The Stimulus Control Room provides free, high-quality RBT® mock exams for anyone studying to become a Registered Behavior Technician®.

A study desk with a laptop showing a practice quiz, a coffee mug, and books
Our mission

Exam prep that’s accessible to everyone

Behavior therapists do meaningful, demanding work, and many are studying for the RBT® exam while working full time. Good practice materials shouldn’t be locked behind a paywall.

Our mission is simple: to serve people studying to become Registered Behavior Technicians® with clear, realistic, well-explained practice questions that anyone with an internet connection can use.

Who we serve

  • Behavior therapists working toward their RBT® credential
  • Students and career changers exploring applied behavior analysis (ABA)
  • Clinics and supervisors looking for free practice resources for their teams
  • Anyone, anywhere with a phone or computer and a browser
Our approach

How we write our practice questions

Mapped to the outline

Every question is tagged to a task in the RBT® Test Content Outline (3rd ed.), so your practice matches what the 2026 exam covers.

Real session scenarios

Questions describe situations RBTs actually face, like a parent’s concern, a data drop, or a tantrum mid-task, not just definitions.

Explained clearly

Each answer comes with a short, plain-language explanation so you understand the concept, not just the answer.

Independent, and proud of it

The Stimulus Control Room is an independent exam preparation resource. We are not affiliated with, endorsed by, or sponsored by the Behavior Analyst Certification Board® (BACB®). Our questions are written independently and are never copied from the real exam.

We’re always improving. If you spot an error or have an idea, we genuinely want to hear it.