Free RBT Behavior Assessment Practice Questions (Domain B Quiz)

Domain B makes up 11% of the RBT exam and covers three core tasks. The content tested here is about gathering information a BCBA needs to build an effective treatment plan, whether that means identifying what motivates a client, understanding their current skill levels, or figuring out why a problem behavior is happening.

Preference assessments are the most frequently tested topic in this domain. As an RBT, you are responsible for conducting these assessments independently. The 3rd Edition Test Content Outline specifies three methods: free operant observation, paired stimulus, and multiple stimulus without replacement. Free operant observation gives the client access to multiple items at once and you observe which they gravitate toward most. Paired stimulus presents two items side by side on each trial and the client selects one, building a preference ranking across repeated pairings. Multiple stimulus without replacement, often called MSWO, presents an array of items and removes each selected item before the next trial, producing a full preference hierarchy efficiently.

Assessments of skill strengths and deficits are the second task in Domain B. These are curriculum-based, developmental, or social skills assessments that identify what a client can already do and where learning gaps exist. As an RBT your role is to run structured probes, score assessments under BCBA direction, and collect baseline data across skill areas.

Functional assessment procedures include descriptive assessment methods such as ABC recording and scatter plots, as well as functional analysis. Descriptive assessment involves directly observing behavior and recording what happened before, during, and after each occurrence. Functional analysis is a controlled experimental procedure designed by a BCBA where conditions are systematically manipulated to test which variables are maintaining a behavior. RBTs run functional analysis trials under direct BCBA supervision but do not design or interpret them independently.

Preference assessment questions appear on almost every RBT exam. The 3rd Edition Test Content Outline specifies three assessment types you are responsible for knowing.

Free operant observation means the client has access to multiple items at once with no specific task or instruction. You observe and record which items they approach, engage with, and stay with most. This is the least structured method and works well for identifying items worth testing more formally.

Paired stimulus, also called forced choice, presents two items side by side on each trial. The client selects one. Repeating all possible pairs across trials produces a preference hierarchy ranked from most to least preferred.

Multiple stimulus without replacement, or MSWO, presents an array of items. The client selects one, that item is removed, and the remaining items are rearranged before the next trial. This continues until all items are selected or rejected. MSWO produces a full preference ranking efficiently in fewer trials than paired stimulus.

Key exam point: preference does not equal reinforcer. An item must actually increase a target behavior when used as a consequence to qualify as a reinforcer. Preference assessments identify candidates and reinforcer assessments confirm them. The exam tests this distinction directly.

Functional assessment procedures are tested in Domain B as task B.3. The goal is to identify why a problem behavior occurs, meaning what function it serves for the client. RBTs do not design or conduct functional assessments independently, but they play a critical data collection role that the BCBA depends on.

Descriptive assessment methods include ABC recording and scatter plots. ABC recording means observing and writing down the Antecedent (what happened before), the Behavior (what the client did), and the Consequence (what happened after) in real time during a session. A scatter plot is a grid that tracks when problem behaviors occur across times of day and days of the week, revealing patterns like whether behavior spikes during specific activities or transitions.

Functional analysis is a controlled experimental method where specific conditions are systematically varied to test which antecedents or consequences maintain a behavior. The BCBA always designs and oversees a functional analysis. RBTs run trials under direct BCBA supervision but do not make independent clinical conclusions from the results.

On the exam, if a question asks who designs the functional assessment, the answer is the BCBA. If it asks who collects the data, the answer is the RBT.

Domain B is 11% of the exam and covers a compact but precise set of concepts. These strategies will prepare you.

• Memorize the three preference assessment methods from the 3rd Edition Test Content Outline by name, procedure, and what output they produce. The three are free operant, paired stimulus, and multiple stimulus without replacement.
• Be clear on the difference between a preference (what a client approaches or selects) and a reinforcer (what actually increases behavior). This distinction is tested directly in Domain B.
• Know your role in functional assessment procedures. You collect data and assist with running trials. You do not design assessments or draw independent clinical conclusions.
• Know what ABC recording captures and practice distinguishing the antecedent from the consequence in a scenario description. Many students mix these up under pressure.

This quiz covers Domain B only. Keep building your knowledge across all six domains:

• RBT Data Collection and Graphing Practice Questions (Domain A)
• RBT Behavior Acquisition Practice Questions (Domain C)
• RBT Behavior Reduction Practice Questions (Domain D)
• RBT Documentation and Reporting Practice Questions (Domain E)
• RBT Ethics Practice Questions (Domain F)

Ready to put it all together? Take the free 75-question RBT practice exam and get a full breakdown of your performance by domain.