What Is DRI vs DRO vs DRA in ABA? Understanding Key Reinforcement Strategies in Applied Behavior Analysis

March 12, 2026

Applied Behavior Analysis (ABA) is a widely used therapy approach designed to help individuals develop meaningful skills and reduce behaviors that interfere with learning or daily life. ABA therapy uses scientifically supported strategies that focus on teaching new behaviors while decreasing behaviors that may be harmful or disruptive.


Among the most important reinforcement techniques used in ABA are Differential Reinforcement strategies. These strategies help therapists strengthen positive behaviors while reducing unwanted behaviors through structured reinforcement.


Three commonly used differential reinforcement strategies are DRI (Differential Reinforcement of Incompatible Behavior), DRO (Differential Reinforcement of Other Behavior), and DRA (Differential Reinforcement of Alternative Behavior).


Understanding what is DRI vs DRO vs DRA in ABA? can help parents, caregivers, educators, and professionals understand how ABA therapists teach replacement behaviors in safe, effective, and structured ways.


This article provides a comprehensive explanation of what is DRI vs DRO vs DRA in ABA?, how each method works, when they are used, and how these strategies help children develop new skills.


Understanding Differential Reinforcement in ABA

To fully understand what is DRI vs DRO vs DRA in ABA?, it is important to first understand the concept of differential reinforcement.


Differential reinforcement is a behavior modification technique used in ABA therapy to encourage desirable behaviors while decreasing undesirable ones. Instead of simply attempting to stop unwanted behavior, ABA therapists teach and reinforce more appropriate behaviors.

Differential reinforcement works by providing reinforcement only when certain behaviors occur.


There are several types of differential reinforcement strategies, including:

  • Differential Reinforcement of Alternative Behavior (DRA)
  • Differential Reinforcement of Incompatible Behavior (DRI)
  • Differential Reinforcement of Other Behavior (DRO)
  • Differential Reinforcement of Low Rates (DRL)


Among these strategies, DRI, DRO, and DRA are commonly used in behavior intervention programs.

Because these methods focus on reinforcing appropriate behaviors, they are considered supportive and skill-building approaches in ABA therapy.


Why Differential Reinforcement Is Used in ABA

Before exploring what is DRI vs DRO vs DRA in ABA?, it is helpful to understand why these techniques are widely used.


Behavior occurs for specific reasons. In ABA, behaviors often serve a function, such as:

  • gaining attention
  • escaping a task
  • accessing preferred items
  • obtaining sensory stimulation

When a behavior serves a function, simply trying to stop it without teaching a replacement behavior may not be effective.


Differential reinforcement strategies address this challenge by:

  • reinforcing appropriate behaviors
  • reducing reinforcement for unwanted behaviors
  • teaching replacement behaviors


These strategies help children develop skills that meet their needs in more appropriate ways.


What Is DRI vs DRO vs DRA in ABA?

The question what is DRI vs DRO vs DRA in ABA? refers to three specific reinforcement techniques used to change behavior patterns.


Although all three methods rely on reinforcement, each one works differently.


Here is a simple overview:

Strategy Full Name Main Goal
DRA Differential Reinforcement of Alternative Behavior Reinforce a replacement behavior
DRI Differential Reinforcement of Incompatible Behavior Reinforce a behavior that cannot happen at the same time as the problem behavior
DRO Differential Reinforcement of Other Behavior Reinforce when the problem behavior does not occur

Each strategy plays a unique role in behavior intervention plans.

Understanding what is DRI vs DRO vs DRA in ABA? helps clarify how therapists choose the best strategy for each situation.

Differential Reinforcement of Alternative Behavior (DRA)

One important part of understanding what is DRI vs DRO vs DRA in ABA? is learning how DRA works.


What Is DRA?

Differential Reinforcement of Alternative Behavior (DRA) involves reinforcing a desirable behavior that serves the same function as the unwanted behavior.

The alternative behavior replaces the challenging behavior.

For example:

  • If a child screams to gain attention, the therapist may reinforce raising a hand or using words to request attention.
  • If a child throws objects to escape a task, the therapist may reinforce asking for a break.

In both cases, the alternative behavior allows the child to meet the same need in a more appropriate way.


How DRA Works

DRA follows several steps:

  1. Identify the function of the problem behavior.
  2. Teach a new alternative behavior that serves the same purpose.
  3. Reinforce the alternative behavior consistently.
  4. Reduce reinforcement for the problem behavior.

Because the new behavior replaces the original behavior, DRA helps children learn effective communication and coping skills.


Example of DRA in ABA Therapy

Imagine a child who cries when they want a toy.

Using DRA:

  • The therapist teaches the child to ask for the toy verbally or using a communication card.
  • When the child asks appropriately, the therapist provides the toy.
  • Crying is not reinforced.

Over time, the child learns that requesting the toy appropriately leads to reinforcement.


Differential Reinforcement of Incompatible Behavior (DRI)

Another key component of understanding what is DRI vs DRO vs DRA in ABA? is DRI.


What Is DRI?

Differential Reinforcement of Incompatible Behavior (DRI) involves reinforcing a behavior that cannot occur at the same time as the problem behavior.


Incompatible behaviors are actions that physically prevent the unwanted behavior from happening.

Examples of Incompatible BehaviorsExamples include:

  • Sitting calmly instead of running around the room
  • Holding a toy instead of hitting others
  • Hands in pockets instead of grabbing objects


Because the incompatible behavior cannot occur simultaneously with the problem behavior, reinforcing it naturally reduces the unwanted behavior.


Example of DRI in ABA Therapy

A child frequently throws toys during playtime.

Using DRI:

  • The therapist reinforces playing appropriately with toys.
  • The child receives praise or rewards when toys are used correctly.

Since playing appropriately requires holding and manipulating the toys, throwing becomes less likely.


Differential Reinforcement of Other Behavior (DRO)

To fully understand what is DRI vs DRO vs DRA in ABA?, it is also important to examine DRO.


What Is DRO?

Differential Reinforcement of Other Behavior (DRO) reinforces the absence of the problem behavior during a specific time period.


In DRO, reinforcement is provided if the unwanted behavior does not occur.

Unlike DRA or DRI, DRO does not require a specific replacement behavior.


How DRO Works

DRO follows a structured time-based system.

Steps include:

  1. Set a time interval (for example, 5 minutes).
  2. Observe whether the problem behavior occurs during the interval.
  3. If the behavior does not occur, provide reinforcement.

If the problem behavior occurs, the interval resets.


Example of DRO in ABA Therapy

A child frequently shouts during class.

Using DRO:

  • The teacher sets a 10-minute interval.
  • If the child does not shout during that time, they receive praise or a reward.

Over time, the intervals may gradually increase.


Comparing DRI vs DRO vs DRA

Understanding what is DRI vs DRO vs DRA in ABA? becomes easier when comparing these strategies directly.

DRA

Reinforces a specific alternative behavior.

DRI

Reinforces a behavior that cannot happen at the same time as the problem behavior.

DRO

Reinforces the absence of the problem behavior for a set period of time.

Although all three methods reduce challenging behaviors, they do so in slightly different ways.


When ABA Therapists Use DRA

DRA is commonly used when a therapist wants to teach a functional replacement behavior.

Situations may include:

  • teaching communication skills
  • replacing aggression with requests
  • teaching appropriate ways to gain attention

Because the alternative behavior serves the same purpose, DRA is often used in functional communication training (FCT).


When ABA Therapists Use DRI

DRI is used when a therapist can identify a behavior that physically prevents the unwanted behavior.

Common examples include:

  • reinforcing hands in lap instead of hitting
  • reinforcing sitting instead of wandering
  • reinforcing chewing toys instead of biting fingers

DRI is especially useful for behaviors involving motor actions.


When ABA Therapists Use DRO

DRO may be used when:

  • the problem behavior occurs frequently
  • it is difficult to identify a specific replacement behavior
  • the goal is to reduce behavior gradually

However, therapists often combine DRO with other strategies to teach new skills.


Data Collection in Differential Reinforcement

ABA therapy relies heavily on data.

When implementing strategies related to what is DRI vs DRO vs DRA in ABA?, therapists track behavior data to evaluate progress.

Data may include:

  • frequency of behaviors
  • duration of behaviors
  • intervals without problem behavior
  • reinforcement schedules

This information helps therapists adjust interventions as needed.


Reinforcement in ABA

Reinforcement is central to understanding what is DRI vs DRO vs DRA in ABA?.

Reinforcement increases the likelihood that a behavior will occur again.

Examples include:

  • praise
  • access to preferred toys
  • activities
  • tokens or points

Reinforcers are individualized based on each child’s preferences.


Teaching Skills Through Differential Reinforcement

Differential reinforcement strategies help teach many skills, including:

  • communication
  • self-regulation
  • social interaction
  • classroom participation
  • daily routines

Because these strategies focus on reinforcing positive behaviors, they promote skill development rather than simply stopping behavior.


The Role of ABA Therapists

ABA therapists carefully select which strategy to use after conducting a behavioral assessment.

The process may include:

  • identifying behavior patterns
  • determining behavioral functions
  • designing individualized intervention plans
  • monitoring progress through data collection

Through these steps, therapists apply strategies related to what is DRI vs DRO vs DRA in ABA? in structured ways.


Conclusion

Understanding what is DRI vs DRO vs DRA in ABA? provides valuable insight into how ABA therapy helps children develop positive behaviors and reduce challenging behaviors.

These three strategies—Differential Reinforcement of Alternative Behavior (DRA), Differential Reinforcement of Incompatible Behavior (DRI), and Differential Reinforcement of Other Behavior (DRO)—are essential tools in behavior intervention programs.


Each strategy works by reinforcing desirable behaviors while reducing reinforcement for behaviors that interfere with learning or daily functioning.


At Achieve Behavioral Therapy, our experienced team uses evidence-based ABA strategies, including differential reinforcement techniques, to support children in developing communication skills, social abilities, and independence.


If you would like to learn how ABA therapy can support your child’s development, contact Achieve Behavioral Therapy today to schedule a consultation with our team.


FAQs

  • Why are DRI, DRO, and DRA used in ABA?

    They help reinforce positive behaviors while reducing behaviors that interfere with learning.

  • Which strategy teaches replacement behaviors?

    DRA focuses on teaching alternative behaviors that replace the problem behavior.

  • Is differential reinforcement evidence-based?

    Yes. Differential reinforcement strategies are widely supported in behavioral research.

Sources:

https://www.allstaraba.org/blog/differential-reinforcement-aba


https://www.levelaheadaba.com/blog/what-is-dri-vs-dro-vs-dra-in-aba


https://www.inclusiveaba.com/blog/differential-reinforcement-aba


https://blossomabatherapy.com/blog/dri-dro-dra-aba-therapy


https://www.apexaba.com/blog/differential-reinforcement-dri-in-aba

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