IBA Exam Prep: Study Guide, Practice Test & Mock Exam

What the IBA exam covers

Your IBA prep is organised around the core task-list domains — so every study guide page and practice question maps to something you will actually be tested on.

What the IBA exam actually tests

IBA questions apply the same core ABA principles you'd find on any credentialing exam, but the scenarios are deliberately written to work across different countries' service systems rather than assuming one specific setup.

Expect stems that don't specify a particular regulatory framework or funding model — a client scenario might be set in a clinic, a school, a home, or entirely over telehealth, and the question tests whether you can apply the underlying principle regardless of which system it's embedded in. Supervision items reflect this too: a meaningful share describe overseeing a case remotely, across a time-zone gap, without the option of dropping in for an in-person spot-check, which changes what "monitoring fidelity" practically looks like.

Behavior-assessment items lean into this same reality — when direct observation isn't possible, you're often working from caregiver-reported ABC data or video review instead of a live functional analysis, and the exam tests whether you can still draw a sound functional hypothesis from indirect and descriptive data rather than assuming a full experimental analysis is always available.

Common mistakes IBA candidates make

Candidates who studied primarily from materials built around one country's service model sometimes miss items that assume a different context — the fix is practicing with scenarios that deliberately withhold setting details, since the exam does the same. A second common miss is confusing consultative supervision (reviewing and advising on a case you don't directly run) with direct supervision (overseeing someone in the room), which matters because the correct answer to "what should the supervisor do" often depends on which relationship applies. Drilling remote and indirect-data scenarios specifically — not just standard in-person assessment items — closes this gap fastest.

How to pass the IBA exam in 3 steps