What's tested on Domain E
- BACB Ethics Code for Behavior Analysts (2022): core principles and section-by-section requirements
- Scope of competence vs. scope of practice
- Informed consent and assent for treatment
- Confidentiality, mandated reporting, and exceptions
- Multiple relationships, conflicts of interest, and boundary issues
- Documentation, billing integrity, and supervisor responsibilities
- Cultural responsiveness and trauma-informed practice
Why this domain matters
Ethics is the domain where you can't trust your gut. On the exam, scenarios pit two plausible options against each other and the right answer hinges on a specific Code section. In practice, the same is true: the field expects every BCBA to know the Code well enough to apply it under pressure with real clients, families, and stakeholders.
How to study Domain E for the BCBA exam
- Read the Code itself, not just paraphrased summaries. The exam tests the wording.
- When two options look equally ethical, ask: "Which one matches the Code's stated priority hierarchy (client welfare > other obligations)?"
- Practice scenarios that involve multiple relationships and informed consent; those are the highest-volume question types.
- Watch for distractors that sound professional but technically violate confidentiality or scope of competence.
Frequently asked questions
How much of the BCBA exam is on ethics?
Twenty-two questions out of 175, or 13% of the exam. One of the three largest content domains.
How do I prepare for ethics scenarios?
Drill scenarios under realistic time pressure. The trap on ethics items is that two answers both sound right; the deciding factor is usually a specific Code section, a stated priority (client welfare first), or a documentation / consent requirement that one option silently skips.