Behavior Assessment

13% of the BCBA exam · blueprint Test Content Outline 6th ed. (since 2025)

Short answer

Domain F is 23 of 175 scored questions (13%). It covers reviewing records and collaborating with other professionals, conducting skill and preference assessments, indirect assessment through interviews and rating scales, descriptive assessment in the natural environment, functional analysis conditions and their interpretation, identifying the function of problem behavior, and reporting assessment results in a way that supports a socially valid intervention.

Why it matters on this exam

Function drives everything downstream. Domain F questions give you data and ask what it means, or ask which assessment answers the referral question.

Key concepts

Indirect assessment: interviews and rating scales. Fast, cheap, weakest evidence.
Descriptive assessment: ABC recording, scatterplot, conditional probability. Correlational, not causal.
Functional analysis: attention, escape/demand, alone/no-interaction, tangible and play/control conditions. Elevated responding relative to control indicates function; undifferentiated data may mean automatic reinforcement or a need to modify the analysis.
Preference assessments: single stimulus, paired stimulus, MSW/MSWO, free operant; preference is not the same as a reinforcer effect.
Skill assessments: curriculum-based, developmental, criterion-referenced; match the tool to the question.
Social validity: goals, procedures and outcomes acceptable to the people who live with them.

Common mistakes

Concluding function from a descriptive assessment alone.
Reading high responding in the play/control condition as a function rather than as a reason to re-examine the analysis.

Worked example

An FA shows elevated screaming only in the demand condition and near-zero elsewhere: escape function. A treatment built on attention extinction would target the wrong contingency entirely.

Original practice questions

Behavior AssessmentDifficulty 3/5

A functional analysis shows elevated responding in the attention condition and near-zero responding in demand, tangible and alone conditions. What does this support?

AEscape from demands, since responding ends task presentation
BAn undifferentiated pattern across conditions that requires modified analysis conditions
CAutomatic reinforcement, since responding persists without any social consequence
DSocially mediated positive reinforcement in the form of attention

Show answer and rationale

Correct: D. Differentiated elevation in the attention condition alone indicates behavior maintained by socially mediated positive reinforcement (attention). Automatic reinforcement typically shows persistent responding in the alone condition.

C — Automatic reinforcement usually produces high responding when alone.
A — Escape would elevate the demand condition.
B — The pattern is clearly differentiated.

Behavior AssessmentDifficulty 2/5

What is the main limitation of relying on descriptive ABC data to identify the function of problem behavior?

AIt shows correlation between events and behavior but does not demonstrate a causal contingency
BIt requires specialised software and training that most teams do not have
CIt can only be used with verbal clients who can report their own antecedents
DIt cannot be collected in natural settings where the behavior actually occurs

Show answer and rationale

Correct: A. Descriptive assessment records naturally occurring sequences without manipulating conditions, so frequently co-occurring consequences may not be the maintaining ones. A functional analysis manipulates conditions to test causal relations.

D — Natural settings are exactly where descriptive data are collected.
B — Paper recording is sufficient.
C — Verbal ability is irrelevant to ABC recording.

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Primary references

BCBA Test Content Outline (6th ed.), in effect since 2025 — Behavior Analyst Certification Board (BACB) · primary · retrieved 2026-09-22, verified 2026-09-22

Last reviewed: 2026-10-18Next review by: 2026-12-17Reviewed by: Openverse editorial team, Authoring and fact verificationHow we verify facts