Behavior Assessment

11% of the RBT exam · blueprint 3rd edition (2026)

Short answer

Domain B is 8 of 75 scored questions (11%). It covers conducting preference assessments (multiple stimulus with and without replacement, paired stimulus, free operant), participating in skill assessments (curriculum-based, developmental, social skills), and participating in components of functional assessment such as descriptive assessment and functional analysis.

Why it matters on this exam

RBTs do not design assessments, but the outline expects you to conduct preference assessments and participate in the others. Questions hinge on that verb: what the RBT does versus what the supervisor does.

Key concepts

Preference assessments find potential reinforcers: paired stimulus (two items at a time, all pairs), multiple stimulus without replacement (chosen item removed, ranking emerges), multiple stimulus with replacement, free operant (observe what the learner engages with when everything is available).
Skill assessments (curriculum-based, developmental, social skills) tell the team what to teach; the RBT runs probes as instructed.
Functional assessment: indirect (interviews, rating scales), descriptive (ABC data in the natural setting), functional analysis (conditions manipulated by the analyst). The RBT typically collects ABC data and may implement FA conditions under close supervision.

Common mistakes

Treating "highly preferred" as "guaranteed reinforcer" — reinforcement is defined by its effect on behavior.
Confusing descriptive assessment (observe, do not manipulate) with functional analysis (manipulate conditions).

Worked example

Five items are presented; the learner picks the tablet, which is then removed; next pick is bubbles, removed; and so on. This is multiple-stimulus-without-replacement and the order of selection is the preference ranking.

Original practice questions

Behavior AssessmentDifficulty 2/5

An RBT presents six toys at once. The learner picks one, plays with it, and the RBT removes that toy before presenting the remaining five. This continues until all toys are chosen. Which assessment is this?

AMultiple-stimulus-without-replacement (MSWO)
BFree-operant preference assessment
CFunctional analysis
DPaired-stimulus preference assessment

Show answer and rationale

Correct: A. Presenting an array, removing the chosen item, and re-presenting the rest is multiple-stimulus-without-replacement. The order of selection gives a preference ranking.

D — Paired-stimulus presents exactly two items at a time.
B — Free-operant leaves all items available and records engagement time.
C — A functional analysis manipulates conditions to test the function of problem behavior, not preference.

Behavior AssessmentDifficulty 3/5

Which activity is a component of a descriptive functional assessment that an RBT would typically carry out?

AInterviewing the family and scoring a standardized rating scale about the behavior
BRecording antecedent, behavior and consequence during natural routines
CPresenting attention only after problem behavior in a contrived session to test the attention function
DSelecting the replacement behavior for the treatment plan

Show answer and rationale

Correct: B. Descriptive assessment means observing and recording ABC data in the natural setting without manipulating anything. RBTs routinely collect ABC data. Manipulating consequences is a functional analysis, and plan design and interviews are supervisor activities.

C — Contriving conditions is a functional analysis, designed and directed by the supervisor.
D — Treatment design is outside the RBT role.
A — Indirect assessment interviews are typically conducted by the supervisor.

All 2 Behavior Assessment questions →

1 flashcards for Behavior Assessment

Practice this topic

Blueprint-mapped questions with full rationales for every choice.

Start practice

Primary references

RBT Test Content Outline (3rd ed.), effective January 1, 2026 — Behavior Analyst Certification Board (BACB) · primary · retrieved 2026-09-21, verified 2026-09-21

Last reviewed: 2026-09-21Next review by: 2026-11-20Draft — pending editorial reviewHow we verify facts