What is ABA therapy and how does it help with communication, routines, and challenging behavior?

Applied Behavior Analysis (ABA) therapy is a science-backed approach that focuses on understanding how behavior works and how learning happens, then using that knowledge to teach meaningful skills. It is widely used to support autistic children and adults, as well as individuals with other developmental or behavioral needs. At its core, ABA aims to improve quality of life by increasing helpful behaviors and reducing those that interfere with learning, safety, and everyday routines.

In this guide, you’ll learn what ABA therapy is, how it works, and how it can specifically help with communication, daily routines, and challenging behavior.

What is ABA therapy?

ABA therapy is a structured, evidence-based approach that uses principles of learning and motivation to bring about positive behavior change. Rather than being a single program, ABA is a framework that can be adapted to each person’s needs, strengths, and goals.

In ABA, therapists look at:

Antecedents – what happens right before a behavior
Behavior – what the person does (the specific action)
Consequences – what happens after the behavior

By understanding this “ABC” pattern, ABA professionals can identify why a behavior happens and how to teach more effective, functional alternatives.

ABA therapy is commonly used to support:

Communication and language development
Social skills and play skills
Self-care and independence (eating, dressing, hygiene)
School readiness and learning behaviors
Safety skills and community participation
Reduction of behaviors that are dangerous, disruptive, or limit learning

Who provides ABA therapy?

ABA therapy is typically designed and overseen by a Board Certified Behavior Analyst (BCBA) or a similarly qualified professional with specialized training in behavior analysis. These professionals:

Conduct assessments
Develop individualized treatment plans
Train and supervise therapists and caregivers
Monitor progress and adjust strategies

Direct therapy is often carried out by behavior technicians or Registered Behavior Technicians (RBTs) under the BCBA’s supervision. Family members, teachers, and other caregivers are also important partners and are often trained to use ABA strategies across settings.

Key principles of ABA therapy

ABA therapy relies on several core principles that explain how behavior is learned and changed:

1. Positive reinforcement

Positive reinforcement is at the heart of ABA. When a behavior is followed by something meaningful or rewarding, it becomes more likely to happen again.

Examples:

A child uses a word approximation (“wa” for water), and the therapist immediately gives water.
A teen follows a morning routine, and the family praises their independence.
A student raises their hand in class and receives attention and a turn to share.

Reinforcers can include praise, access to a favorite toy or activity, tokens, or naturally occurring rewards (like getting what you asked for).

2. Functional behavior

Behavior always has a purpose or “function.” Common functions include:

Gaining attention
Getting access to something (toys, snacks, screens, activities)
Escaping or avoiding something (a task, noise, sensory input)
Sensory or automatic reasons (the behavior itself feels good or calming)

ABA therapy focuses on identifying the function of a behavior so that more appropriate, functional behaviors can be taught to meet the same need.

3. Individualized and data-driven

ABA is not one-size-fits-all. Effective programs are:

Individualized – Based on the person’s abilities, interests, culture, and family priorities
Goal-oriented – Focused on meaningful, real-life outcomes
Data-driven – Progress is monitored using ongoing data collection, and strategies are adjusted as needed

How ABA therapy helps with communication

Communication is a central focus of many ABA programs because difficulties with communication often underlie frustration and challenging behavior. ABA therapy can support communication development in multiple ways.

Assessing communication needs

The BCBA or speech-language pathologist (SLP) collaborating with the team will evaluate:

How the person currently communicates (crying, gestures, sounds, words, devices)
What they can understand (receptive language)
What they can express (expressive language)
Which communication methods are most accessible (spoken words, sign, picture exchange, AAC device)

This assessment guides the selection of communication goals and strategies.

Teaching functional communication skills

The priority is functional communication—practical ways to get needs met and interact with others. ABA therapy may teach:

Requesting items, actions, help, or a break
Rejecting or saying “no”
Asking for information (“where is…?”, “what next?”)
Commenting on things in the environment
Greeting others and responding to greetings
Calling for attention appropriately (instead of yelling or hitting)

ABA uses systematic teaching methods such as:

Prompting and fading – Giving support (like a gesture, model, or partial verbal prompt) and gradually reducing it as the person becomes more independent
Shaping – Reinforcing small steps toward a new communication skill (e.g., reinforcing “buh” on the way to “ball”)
Modeling – Demonstrating the desired communication behavior
Discrete Trial Training (DTT) – Structured practice in short learning trials with clear prompts and feedback
Natural Environment Teaching (NET) – Embedding learning into daily routines and play, following the person’s interests

Supporting different communication modes

Not everyone communicates in the same way. ABA therapy can support:

Spoken language – Expanding vocabulary, clarity, and sentence use
Sign language – Teaching signs as a primary or supplemental method
Picture-based systems (like PECS) – Using pictures to request or comment
Augmentative and Alternative Communication (AAC) – Supporting communication devices, apps, or systems

The goal is effective, meaningful communication—not forcing one specific method if another is more accessible and comfortable.

Reducing frustration through communication

Many challenging behaviors occur because a person can’t easily express:

“I don’t like this.”
“I need a break.”
“I’m in pain.”
“I want something different.”

ABA supports the development of replacement communication behaviors so individuals can express these needs directly, which often reduces aggression, self-injury, tantrums, or other unsafe behaviors.

How ABA therapy supports routines and daily living skills

Difficulty with routines can make everyday life stressful for children, adults, and families. ABA therapy uses structured strategies to make routines more predictable, teach independence, and reduce power struggles.

Breaking tasks into manageable steps

ABA often uses task analysis, which means breaking a complex routine into small, teachable steps. For example:

Morning routine task analysis:

Get out of bed
Go to the bathroom
Use the toilet
Flush
Wash hands
Brush teeth
Put on clothes
Put dirty clothes in laundry basket

Each step can be taught individually, with prompts and reinforcement, until the whole sequence is learned.

Teaching independence with chaining

Behavior analysts use different teaching methods to link steps together:

Forward chaining – Teach the first step, then gradually add more steps in order
Backward chaining – Help with all steps except the last; when the person masters the last step, move backward in the sequence
Total task presentation – Practice all steps with support as needed

These methods are useful for routines such as:

Getting dressed
Bathing and hygiene
Eating with utensils
Packing a backpack
Cleaning up toys or materials
Preparing simple snacks

Using visual supports and schedules

Visual supports help make routines predictable and reduce anxiety. ABA programs often include:

Visual schedules (pictures, icons, or words showing what will happen and in what order)
First-Then boards (e.g., “First homework, then tablet”)
Checklists for older children, teens, or adults
Timers to show how long an activity will last or when the next one will start

These tools help:

Prepare for transitions
Increase independence
Reduce arguments about “what’s next”
Support individuals who process visual information better than verbal instructions

Building flexibility and coping with changes

While routines are helpful, life also includes changes and unexpected events. ABA therapy can:

Gradually introduce small changes to routines to build flexibility
Teach coping strategies like deep breathing, asking for help, or using a calming activity
Practice responses to common changes (a different therapist, new route to school, a substitute teacher)

This combination of structure and flexibility supports resilience and reduces distress around changes.

How ABA therapy addresses challenging behavior

Challenging behavior can include anything that interferes with learning, social relationships, or safety, such as aggression, self-injury, property destruction, eloping (running away), or severe tantrums. ABA therapy approaches these behaviors systematically and compassionately.

Functional Behavior Assessment (FBA)

Before addressing challenging behavior, ABA professionals conduct a Functional Behavior Assessment to understand why the behavior occurs. This may include:

Observing the behavior directly
Interviewing caregivers, teachers, and the individual when possible
Reviewing records and history
Testing different conditions to see what triggers or maintains the behavior

The FBA identifies the likely function of the behavior (attention, escape, access, sensory), which guides the intervention plan.

Teaching replacement behaviors

Instead of focusing only on stopping a behavior, ABA emphasizes teaching alternative, appropriate behaviors that serve the same function. Examples:

If a child hits to get a toy → Teach them to request the toy or take turns
If a teen shouts to escape homework → Teach them to ask for a break or help
If someone screams for attention → Teach them to tap a shoulder, call a name, or use a device to say “talk to me”

Once the replacement behavior is learned and consistently reinforced, the challenging behavior becomes less necessary.

Modifying the environment and expectations

ABA therapy also focuses on prevention by adjusting the environment:

Reducing known triggers where possible (noise, clutter, demands)
Providing choices instead of rigid demands
Structuring tasks to be achievable, with breaks built in
Ensuring communication supports are available at all times
Using predictable routines and visual supports

These proactive strategies often reduce the frequency and intensity of challenging behaviors.

Using reinforcement ethically and effectively

When targeting challenging behavior, ABA therapists carefully design reinforcement systems to:

Increase positive, adaptive behaviors
Avoid inadvertently rewarding the challenging behavior (e.g., giving lots of attention during a tantrum)
Promote intrinsic motivation over time by shifting from artificial rewards to natural consequences

Plans should be humane, respectful, and person-centered, always taking into account the individual’s dignity and emotional well-being.

What does a typical ABA therapy session look like?

No two ABA programs look exactly the same, but many include:

A mix of structured learning (e.g., discrete trial training) and naturalistic teaching
Frequent opportunities to practice communication, social skills, and daily living skills
Play-based activities, especially for younger children
Use of visual supports, reinforcement, and clear expectations
Ongoing data collection to track progress

Sessions may occur:

At home
In a clinic setting
At school or in the community
One-on-one or in small groups

The number of hours per week varies widely based on age, goals, needs, and local guidelines.

Family involvement in ABA therapy

Family participation is critical in ABA therapy because most learning and behavior change happen outside sessions. An effective program will:

Involve caregivers in goal selection
Provide parent and caregiver training
Offer strategies that fit the family’s culture, values, and daily life
Encourage practice of skills during natural routines like meals, playtime, and outings

This collaboration helps skills generalize from therapy to real-life settings and makes progress more sustainable.

Concerns and considerations about ABA therapy

ABA therapy has strong research support, but it is not without debate or potential concerns. Families should be aware of the following:

Quality varies by provider. Not all ABA programs are equally child-centered, respectful, or up-to-date with best practices.
Person-centered focus matters. Good ABA should support autonomy, preferences, and self-advocacy, not aim to “normalize” someone or suppress harmless behaviors like harmless stimming.
Goals should be meaningful. Targets should improve quality of life, communication, safety, and independence—not just compliance or appearance.
Consent and comfort are essential. The individual’s comfort, safety, and consent (to the extent possible) should guide therapy.

Families can ask questions such as:

How do you choose goals?
How do you ensure my child’s autonomy and dignity are respected?
How do you incorporate my child’s interests and strengths?
How do you handle distress or refusal?
How are we, as a family, involved in the process?

Is ABA therapy right for my child or family member?

Deciding on ABA therapy is a personal choice. It may be a good fit if:

There are communication challenges leading to frustration or isolation
Daily routines feel overwhelming or require constant adult assistance
Challenging behavior is impacting safety, learning, or family life
You want a structured, evidence-based approach with measurable goals

A good first step is to:

Talk with your pediatrician, psychologist, or developmental specialist.
Consult with a licensed BCBA or reputable ABA agency.
Ask for an initial assessment and a clear explanation of the proposed plan.
Trust your observations: look for signs that your child feels safe, engaged, and respected.

Key takeaways

ABA therapy is an evidence-based approach that uses learning principles to build meaningful skills and reduce behaviors that interfere with quality of life.
It can significantly support communication, helping individuals express their needs, wants, and feelings in ways that reduce frustration and build connections.
ABA helps with routines by breaking tasks into small steps, using visual supports, and teaching independence in daily living skills.
When addressing challenging behavior, ABA focuses on understanding the purpose of the behavior and teaching healthier, more effective alternatives.
Effective ABA therapy is individualized, respectful, and collaborative, involving families and emphasizing the person’s dignity, preferences, and long-term well-being.

If you’re considering ABA therapy, look for providers who prioritize functional communication, supportive routines, and positive behavior strategies tailored to your child’s unique strengths and challenges.

Answers you can trust, from Codeables