RBT Task List: The 6 Domains, Explained
The RBT Task List is the BACB’s official specification of every skill and knowledge area a Registered Behavior Technician has to demonstrate, and it underlies every stage of RBT certification. The current version, the 3rd edition, organizes 43 tasks into 6 domains: Data Collection and Graphing, Behavior Assessment, Behavior Acquisition, Behavior Reduction, Documentation and Reporting, and Ethics. It does three jobs at once: it’s the outline for the 40-hour training curriculum, the blueprint for exam content, and the definition of what an RBT is and isn’t allowed to do on the job.
People search for this list for different reasons at different stages: new applicants want to know what they’re actually being trained and tested on, working RBTs want to confirm a task is within their scope before they attempt it, and anyone applying after a gap wants to know if the version they trained under is still current. The 3rd edition took effect for training and exams beginning in 2026, replacing the 2nd edition’s five-domain structure with a renamed, six-domain one.
(RBT HQ is not affiliated with the BACB. We use “RBT Task List” the way the field does, to describe the BACB’s published outline, not to reproduce its full text; we paraphrase the structure here rather than copying it directly.)
What changed between the 2nd and 3rd editions?
Four of the six domains got renamed to describe the work more precisely, without changing what’s covered underneath. Measurement became Data Collection and Graphing, Assessment became Behavior Assessment, Skill Acquisition became Behavior Acquisition, and Professional Conduct and Scope of Practice became simply Ethics. The underlying content shifted too, not just the labels, since the 3rd edition was built from a fresh job-task analysis rather than a light edit of the old list.
What are the six domains, and how much of the exam does each cover?
Here’s the full breakdown, since the exam weighting tells you where to focus study time, not just what topics exist:
| Domain | What it covers, in plain terms | Share of scored exam questions |
|---|---|---|
| Behavior Acquisition | Teaching procedures: discrete-trial, chaining, shaping, prompting/fading, token economies, generalization | 25% |
| Behavior Reduction | Responding to problem behavior: differential reinforcement, extinction, antecedent strategies, crisis procedures | 19% |
| Data Collection and Graphing | Recording behavior accurately, calculating and graphing results, spotting trends | 17% |
| Ethics | Core conduct standards, confidentiality, supervision, professional boundaries | 15% |
| Documentation and Reporting | Session notes, timely communication with a supervisor, reporting variables that affect progress | 13% |
| Behavior Assessment | Preference assessments, skill-based assessments, assisting with functional assessments | 11% |
Source: RBT Test Content Outline, 3rd ed.. Note that Behavior Acquisition and Behavior Reduction together account for 44% of the scored exam, more than the other four domains combined.
Where does the task list actually show up in your day-to-day training?
The 40-hour training curriculum is built directly from these six domains, with the biggest single block, 20 hours, dedicated to Behavior-Change Interventions, which spans both the Behavior Acquisition and Behavior Reduction domains together. The remaining training hours map roughly onto Data Collection, Behavior Assessment, Documentation, and Ethics individually, so studying the task list before training starts gives you a preview of exactly what each session will cover.
Does the task list define what you’re legally allowed to do as an RBT?
Yes, that’s its third function beyond training and testing. It sets your scope of practice: an RBT performs tasks that fall inside these six domains, under the direction and close supervision of a qualified RBT Supervisor or RBT Requirements Coordinator, and doesn’t practice independently or make clinical decisions outside that scope. Working outside the task list, making independent treatment decisions instead of following a supervisor’s plan, for example, is a professional-conduct issue, not just a technicality.
How does the task list relate to the Ethics domain specifically?
Ethics is both a domain on the exam (15% of scored questions, 11 questions) and a separate document, the RBT Ethics Code (2.0), that governs conduct once you’re certified. The task list’s Ethics domain covers applying core principles and identifying effective supervision and confidentiality practices; the full Ethics Code goes further, spelling out 29 specific standards you’re required to follow as a working RBT, not just recognize on a test.
Is the task list the same thing as a study guide?
Not quite. The task list tells you what’s covered and how much weight each domain carries; a study guide tells you how to actually prepare for it, timing, format, day-of logistics. Think of the task list as the syllabus and the study guide as the study plan built around that syllabus.
Run the free RBT practice exam broken out by these same six domains, so a weak Behavior Reduction score doesn’t get buried inside an overall percentage.
The free RBT HQ Exam Prep Cheat Sheet organizes its content by these exact six domains, matching the weighting above, so your review time lines up with where the real exam actually puts its questions.
FAQ
How many tasks are on the current RBT Task List? The 3rd edition organizes 43 tasks across the 6 domains. The exact count per domain varies, with Behavior Acquisition carrying the most individual tasks, matching its largest share of the exam.
When did the 3rd edition RBT Task List take effect? For training and exam forms beginning in 2026. Applicants who trained under the older structure before that transition needed to complete a training that met the new curriculum outline if applying on or after January 1, 2026.
Is the RBT Task List the same as the Test Content Outline? They’re closely related but not identical documents. The Task List describes the skills and knowledge areas broadly; the Test Content Outline is the exam-specific version that also shows the exact question count and percentage weighting per domain.
Do all six domains carry equal weight on the exam? No. Behavior Acquisition is the largest at 25% of scored questions, while Behavior Assessment is the smallest at 11%. Weighting isn’t even across domains, so study time shouldn’t be either.
Can I read the full official RBT Task List myself? Yes, the BACB publishes the Test Content Outline directly on its site. We summarize and paraphrase its structure here rather than reproducing the full document, since it’s BACB copyrighted material.
Bottom line: the six domains aren’t equal weight, so if you only have time to master two of them before your exam, make it Behavior Acquisition and Behavior Reduction. Together they’re 44% of what actually gets scored.