What is ABA Therapy?
A complete guide to Applied Behavior Analysis for parents, educators, and professionals. What ABA is, how it works, what the evidence says, and what to expect.
ABA in One Paragraph
Applied Behavior Analysis (ABA) is a scientific approach to understanding behavior and how it is affected by the environment. It uses evidence-based techniques to increase helpful behaviors (like communication, social skills, and daily living skills) and decrease behaviors that interfere with learning or cause harm. ABA is the most researched and widely endorsed treatment for autism, recommended by the US Surgeon General, the American Psychological Association, and the American Academy of Pediatrics.
Key point: ABA is not a single technique. It is a framework for understanding why behaviors occur and systematically teaching new skills. The specific techniques used are tailored to each individual's needs, age, and goals.
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How ABA Works: The ABC Model
At the core of ABA is the understanding that all behavior occurs in a context. The ABC model describes this context:
- Antecedent: What happens immediately before the behavior. This could be a request, a change in environment, the presence or absence of a person, or an internal state like hunger or fatigue.
- Behavior: The observable action. ABA focuses on behaviors that can be seen and measured, not on internal feelings or motivations that cannot be directly observed.
- Consequence: What happens immediately after the behavior. Consequences either increase the likelihood of the behavior happening again (reinforcement) or decrease it (punishment, though modern ABA emphasizes reinforcement).
By systematically observing and recording these three elements, a BCBA (Board Certified Behavior Analyst) can identify why a behavior is occurring and design an intervention that addresses the root cause, not just the symptom.
Try our free ABC Data Collection Tool →The Four Functions of Behavior
ABA research has identified four primary reasons (functions) that all behavior serves:
Attention
The behavior results in social attention from others, even negative attention like scolding.
Escape/Avoidance
The behavior results in getting away from a task, demand, or unpleasant situation.
Access to Tangibles
The behavior results in gaining a preferred item, activity, or food.
Sensory/Automatic
The behavior produces its own internal reinforcement (feels good physically or sensorily).
Understanding the function is critical because the same behavior (e.g., screaming) can serve different functions for different people or in different contexts. A child who screams to get attention needs a different intervention than a child who screams to escape a difficult task.
Common ABA Techniques
ABA therapists use a variety of evidence-based techniques, selected based on each individual's needs:
Positive Reinforcement
The most fundamental ABA technique. When a desired behavior occurs, it is followed by something the person values (praise, a preferred activity, a token). This increases the likelihood of the behavior happening again. Effective reinforcement requires knowing what each individual finds motivating.
Discrete Trial Training (DTT)
Structured teaching method where skills are broken into small, teachable components. Each trial has a clear instruction, a response opportunity, and a consequence. Used for teaching specific academic, language, and cognitive skills.
Naturalistic Teaching (NET)
Teaching that occurs in natural environments during play, daily routines, and social interactions. The child's interests guide the learning opportunities. More closely resembles how typically developing children learn.
Prompting and Prompt Fading
Providing assistance (physical, verbal, visual, or gestural prompts) to help a person perform a skill, then systematically reducing the prompts until the person can perform independently.
Task Analysis
Breaking complex skills (like hand washing or getting dressed) into individual steps and teaching each step systematically. Our Visual Schedule Maker uses task analysis principles.
Functional Communication Training (FCT)
Teaching a person to use communication (words, signs, pictures, or devices) to get their needs met, replacing challenging behaviors that previously served the same function.
What Does the Evidence Say?
ABA has more published research supporting its effectiveness for autism than any other treatment approach:
- The US Surgeon General identified ABA as the recommended treatment for autism in 1999
- The American Psychological Association recognizes ABA as an evidence-based practice
- The American Academy of Pediatrics recommends ABA-based interventions for autism
- A landmark study by Lovaas (1987) showed that 47% of children receiving intensive early ABA achieved normal intellectual and educational functioning
- Over 50 years of peer-reviewed research supports the effectiveness of ABA across ages, settings, and skill areas
- Insurance mandates in all 50 US states recognize ABA as a medically necessary treatment
About historical concerns: Some advocates have raised concerns about historical ABA practices from the 1960s-70s that included aversive procedures. Modern ABA has largely moved away from punishment-based approaches. Today's field emphasizes positive reinforcement, client dignity, autonomy, and assent. The BACB Ethics Code explicitly prohibits harmful procedures and requires that the least restrictive effective treatment be used. If you have concerns about your child's therapy, speak with the supervising BCBA or contact the BACB.
What to Expect in ABA Therapy
If you are considering ABA therapy for your child, here is what the process typically looks like:
- Referral and diagnosis: A formal autism diagnosis from a psychologist, developmental pediatrician, or neurologist is typically required for insurance authorization.
- Initial assessment: A BCBA conducts a comprehensive assessment (2-6 hours) evaluating your child's skills, behaviors, and needs across all areas.
- Treatment plan: Based on the assessment, the BCBA develops an individualized plan with specific goals, recommended hours, and strategies.
- Insurance authorization: Your provider submits the plan to insurance for approval (1-4 weeks).
- Therapy sessions: An RBT works directly with your child, implementing the treatment plan through structured and play-based activities.
- Ongoing supervision: The BCBA observes sessions regularly, trains the RBT, adjusts the plan based on data, and meets with your family to discuss progress.
- Parent training: You learn ABA strategies to use at home, ensuring consistency between therapy and daily life.
- Progress monitoring: Data is collected every session. You can see exactly what your child is learning and how fast.
Who Provides ABA Therapy?
BCBA
Board Certified Behavior Analyst. Master's degree, 1,500+ fieldwork hours, national exam. Designs treatment plans, conducts assessments, supervises therapy.
How to become a BCBA →RBT
Registered Behavior Technician. High school diploma, 40-hour training, competency assessment. Implements treatment plans through direct one-on-one sessions.
RBT training resources →How to Find a Good ABA Provider
Finding the right provider matters. Here is what to look for:
- Verify the BCBA holds current certification (check the BACB registry)
- Ask about their approach: modern ABA emphasizes positive reinforcement and client dignity
- Ask how they collect and share data with families
- Verify they involve parents in treatment planning and decision-making
- Check insurance acceptance and billing practices
- Ask for references from current families
- Check the ESBAP ethical provider directory for verified providers
Free Resources to Get Started
Whether you are a parent, professional, or student, Special Learning has free tools and resources to support your ABA journey.
Ready to Go Deeper?
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The full eBook edition, written for parents of newly diagnosed children and anyone who loves and cares for them, including special education teachers. Straightforward information to help you understand autism and make informed decisions.
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Special Learning’s foundational ABA course, taught by highly trained professionals with extensive experience in the principles and methods of Applied Behavior Analysis. Webcast format — watch from your computer or mobile device.
See the CourseFrequently Asked Questions About ABA
Applied Behavior Analysis is a scientific approach to understanding behavior and how it is affected by the environment. It uses evidence-based techniques to build skills and reduce challenging behaviors. It is the most researched treatment for autism, endorsed by the US Surgeon General and American Psychological Association.
No. ABA principles apply to any situation involving behavior change: education, workplace performance, substance abuse, brain injury rehab, sports psychology, and more. Autism is the most common application, but ABA is a universal science of behavior.
Initial progress often appears within 1-3 months. Significant behavioral changes typically emerge within 6-12 months. Major skill gains develop over 1-3 years. Progress is tracked through continuous data collection so you can see exactly what is changing.
Yes. All 50 US states mandate insurance coverage for autism treatment including ABA. Medicaid covers ABA in all states. Most families pay copays of $20-50 per session. See our full cost and insurance guide.
Modern ABA emphasizes positive reinforcement, dignity, and client assent. Historical ABA (1960s-70s) sometimes used aversive procedures, which the field has moved away from. The BACB Ethics Code prohibits harmful procedures and requires the least restrictive effective treatment.
Verify BCBA certification, ask about their positive reinforcement approach, check data practices, confirm family involvement in planning, verify insurance acceptance, ask for references, and check the ESBAP directory at esbap.org for ethically verified providers.