GHABA Proficiency II study guide
GHABA Proficiency II · Work through your exam, one topic at a time.
GHABA Proficiency II is a professional credential for behavior practitioners who already hold foundational training and want to demonstrate readiness for more independent, analytically demanding work. Candidates typically come from applied behavior analysis roles in schools, clinics, homes, or community programs, and are moving from supervised delivery of plans toward designing, monitoring, and troubleshooting them. The GHABA Proficiency II study guide has 7 sections and about 3,122 words.
01Foundational Knowledge of Behavior Analysis
This domain tests whether you can explain why behavior-analytic technology works, not just recite procedures. Expect items that ask you to classify a contingency, identify the operant versus respondent process at work, or predict what happens to response rate when a schedule parameter changes.
486 words, about 2 min02Behavior Assessment and Functional Analysis
This domain tests the assessment hierarchy: which method answers which question, how to interpret a differentiated versus undifferentiated outcome, and how to weigh risk during experimental manipulation. Items often present a data pattern and ask for the functional hypothesis, or ask which assessment is appropriate given setting constraints.
426 words, about 2 min03Behavior Intervention Planning and Implementation
This domain tests whether you can convert a functional hypothesis into a defensible plan: function-matched reinforcement, antecedent prevention, least-restrictive sequencing, treatment integrity, and programmed generalization. Items typically present a function and ask which procedure fits, or present an implementation and ask what is missing.
439 words, about 2 min04Data Collection, Measurement, and Analysis
This domain tests measurement decisions, interobserver agreement computation, and visual analysis within single-case designs. Items frequently give you raw observation records and ask for the correct IOA formula, or give a graph and ask whether experimental control is demonstrated.
430 words, about 2 min05Ethics, Professional Conduct, and Regulatory Compliance
This domain tests judgment under obligation: consent, confidentiality, competence, boundaries, restrictive procedures, and documentation. Items usually present a realistic dilemma and ask for the first or most appropriate action.
434 words, about 2 min06Supervision, Training, and Case Management
This domain tests how you develop another person's behavior and run a caseload accountably: contracts, competency-based training, feedback, verification, and documentation. Items often describe a supervisory lapse and ask what should have happened, or a trainee scenario and ask whether an hour or an attestation is legitimate.
430 words, about 2 min07Collaboration and Interdisciplinary Practice
This domain tests how you work alongside teachers, speech-language pathologists, occupational and physical therapists, physicians, social workers, paraprofessionals, and families without leaving your scope or letting plans contradict each other. Items describe a disagreement or a coordination failure and ask for the most appropriate response.
477 words, about 2 min