100 Questions · BCBA TCO 6 · 2026 Edition

The BCBA Mock Exam

Comprehensive Edition — 100 Questions · 9 Sections · One Exam.

100 Questions ~2.5 Hours 9 Sections Goal: 80%+

Created by a BCBA who passed on the first try — with ADHD — and has mentored dozens through theirs.

Aligned to the BACB® BCBA TCO 6
Evidence-based practice · Built on current ABA literature

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This is the full-length BCBA mock exam — 100 questions across all 9 sections of the BCBA TCO 6. Enter your details and we'll unlock it instantly.

Before You Begin

How to Take This Mock

Treat it like the real exam. Read every option before you commit. Rationales appear after you submit — every question is an opportunity to sharpen your clinical thinking.

Format: Multiple choice, single best answer (A–D).
Benchmark: Aim for 80%+ before test day — the BACB doesn't publish a specific passing percent, so we use a study benchmark.
Feedback: Instant scoring, per-section breakdown, and a rationale on every question.
Blueprint: Items span all 9 sections of the BCBA TCO 6, weighted to match the real exam.
Study honestly: Don't peek. Use missed items to target your next study block.

References & Further Reading

Built on Foundational Behavior Science

This mock exam draws on the foundational literature of behavior analysis and the current BACB standards. Core references cited across the questions and rationales:

Behavior Analyst Certification Board (BACB). BCBA TCO 6 (6th Edition). 2022.
Behavior Analyst Certification Board (BACB). Ethics Code for Behavior Analysts. 2022.
Cooper, J.O., Heron, T.E., & Heward, W.L. (2020). Applied Behavior Analysis (3rd ed.). Pearson.
Skinner, B.F. (1938). The Behavior of Organisms: An Experimental Analysis. Appleton-Century-Crofts.
Iwata, B.A., Dorsey, M.F., Slifer, K.J., Bauman, K.E., & Richman, G.S. (1982/1994). Toward a functional analysis of self-injury. Journal of Applied Behavior Analysis, 27(2), 197–209.
Wolf, M.M. (1978). Social validity: The case for subjective measurement. Journal of Applied Behavior Analysis, 11(2), 203–214.
Stokes, T.F., & Baer, D.M. (1977). An implicit technology of generalization. Journal of Applied Behavior Analysis, 10(2), 349–367.
Miltenberger, R.G. (2016). Behavior Modification: Principles and Procedures (6th ed.). Cengage Learning.
Sundberg, M.L. (2008). VB-MAPP: Verbal Behavior Milestones Assessment and Placement Program. AVB Press.

About the Author

Ercilia (Lia) O'Neal, MA, BCBA, LBA

Founder · E.M.O. Behavior Lab & Consulting. Seven years in ABA behavior change. Bilingual clinical practice in English and Español — serving clinicians, supervisees, and families worldwide.

emobehaviorlab.com · hello@emobehaviorlab.com

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The BCBA Mock Exam

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How to Take This Mock

Built on Foundational Behavior Science