QABA, QBA, IBA and BCBA: What the Letters After a Behavior Analyst’s Name Mean

Behavior analysts often have a string of letters after their names. On a poster or a website, “QABA”, “QBA”, “IBA” and “BCBA-D” can look like alphabet soup. This guide explains them in plain language so you can ask better questions. Credential rules change, so always check the awarding body’s own site before you decide.

Two different things: bodies and credentials

Start by separating the organisation from the credential it awards.

• QABA is the Qualified Applied Behavior Analysis Credentialing Board. It is the organisation.
• IBAO is the International Behavior Analysis Organization. Also an organisation.
• BACB is the Behavior Analyst Certification Board, a third organisation, which awards the BCBA.

Then come the credentials they award to individuals.

QABA credentials and the QBA

QABA describes a three-step ladder: the ABAT (Applied Behavior Analysis Technician) is the entry level, the QASP-S (Qualified Autism Service Practitioner–Supervisor) is the middle tier, and the QBA (Qualified Behavior Analyst) is the advanced credential. According to QABA, a QBA is expected to plan programmes, carry out behavioural assessment, analyse data, train staff and supervise technicians and mid-level supervisors. Published requirements for the QBA include a master’s degree in a related field, approved coursework in ABA, ethics and autism, a substantial block of supervised fieldwork, a proctored exam and a background check.

IBAO and the IBA

The IBAO awards the International Behavior Analyst (IBA) credential. It signals that a person has completed education, supervised experience, practice and examination tasks set by the organisation. IBAs typically lead assessment, design support plans and supervise the people who carry them out. IBAO states that it is separate from, and not endorsed by, the BACB. That is worth knowing, because different countries and funders recognise different credentials.

BCBA and BCBA-D

The BCBA (Board Certified Behavior Analyst) is awarded by the BACB and is probably the best known worldwide. A BCBA-D is a BCBA who also holds a doctoral-level designation. You may see it after the name of senior clinicians and academics, such as Dr. Jane Paul, a mentor and collaborative partner of Joyful Journeys.

Where this shows up at Joyful Journeys

Our founder, Diana Ayoo, is a certified behavior analyst through QABA and IBAO, and a mother to a neurodivergent child. Her training and lived experience shape how we teach caregivers. You can read more on our team page and in who we are and what we do.

Seven questions to ask any provider

1. Which credential do you hold, and which body awards it?
2. How can I verify it independently?
3. Who writes and who supervises my child’s plan?
4. How will you involve parents or caregivers?
5. How do you measure progress, and how often will you share it?
6. How do you make sure my child is comfortable and can say “no”?
7. What will it cost, and what is included?

Requirements described here were summarised from the awarding bodies’ public pages and may change. Check qababoard.com, theibao.com and the BACB for current rules.