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A Glossary of ASD and ABA Terms

By: Elise Armstrong

Stepping into the world of Autism Spectrum Disorder (ASD) can feel incredibly overwhelming right at the start. Between the initial diagnosis and beginning any therapy, you are suddenly hit with a tidal wave of new terms and acronyms. We created this guide to serve as your translator, breaking down complex clinical jargon into clear, everyday language your family can actually use.

The Diagnosis and General Terms

Before therapy even begins, you will encounter terms that describe the nature of your child’s care and the framework used by medical professionals.

ASD (Autism Spectrum Disorder): The formal clinical diagnosis. It is referred to as a “spectrum” because the strengths and challenges of each individual vary widely.

DSM-5 (Diagnostic and Statistical Manual of Mental Disorders): The standard handbook used by clinicians and doctors to diagnose ASD.

IEP (Individualized Education Program): A legal document developed for a child in public school to ensure they receive specialized instruction and related services tailored to their needs.

ND (Neurodiverse): A term used to describe the idea that people experience and interact with the world around them in many different ways; there is no one “right” way of thinking, learning, and behaving.

NT (Neurotypical): A term used to describe individuals whose brain functions and processing behaviors fall within the expected or “typical” range.

ABA Therapy Roles

When you begin therapy, you will meet several different professionals. Understanding their hierarchy helps you know who to contact for specific questions.

BCBA (Board Certified Behavior Analyst): The primary supervisor. This is a master’s or doctoral-level professional who designs the treatment plan and supervises the staff.

BCaBA: An assistant-level analyst who works under the supervision of a BCBA to help manage cases.

BT (Behavior Technician)/RBT (Registered Behavior Technician): A professional who provides direct ABA services. This person works with your child on a daily basis, implementing the programs written by the BCBA.

Learn More: Understanding Your Child’s ABA Team

Common ABA Terms

This is where the terminology gets technical. These are the tools and methodologies used to help your child learn new skills and navigate their environment.

PFA (Practical Functional Assessment): A compassionate and safe process used to identify the specific circumstances under which a child is at their best, as well as the triggers for challenging behavior.

BIP (Behavior Intervention Plan): The strategy or roadmap used to decrease challenging behaviors and increase helpful, functional ones based on assessment results.

NET (Natural Environment Teaching): Teaching skills through play or everyday activities in “real world” settings rather than sitting at a desk.

DTT (Discrete Trial Training): A structured method where skills are broken down into small, manageable steps and taught repeatedly to ensure mastery.

ABC (Antecedent-Behavior-Consequence): The formula used to track behavior. It records what happened right before the behavior (A), what the child did (B), and what happened right after the behavior (C).

Assent: A child’s willingness to participate in a therapy or activity. It can be expressed vocally (e.g., saying “yes” or “I want to do this”) or non-vocally through body language, smiles, and active engagement.

Assent-Based Care: A compassionate, progressive approach to therapy where the practitioner prioritizes the child’s happiness, relaxation, and engagement. In assent-based care, if a child shows signs of distress, resistance, or withdrawal (withholding assent), the therapist stops the task, reassesses the approach, and works to make the learning environment safe and appealing again rather than forcing compliance.

Communication and Social Terms

Because communication is a core focus of many intervention programs, you will hear these specific terms regarding language development.

AAC (Augmentative and Alternative Communication): Tools or methods, such as tablets with speech apps or picture boards, used to help a child communicate if they have limited vocal speech.

VBMAPP: A common assessment tool used to track a child’s verbal and social milestones and determine their learning level.

Mand: A technical term for a request. For example, if a child asks for juice, they are “manding.”

Tact: A technical term for a label. For example, if a child sees a dog and says “dog,” they are “tacting.”

Advice for Parents

If a professional uses an acronym you do not recognize, please ask for clarification immediately. The world of ABA is data-driven and clinical, but you are the most important member of the treatment team. You should understand every part of the plan to better support your child.