Shaping in ABA: How It Works, Plus 3 Real Examples

Teaching a nonverbal learner to say a first word or helping an avoidant learner sit calmly in a dentist’s chair takes more than one step.

Board Certified Behavior Analysts (BCBAs) build skills like these gradually, using a core teaching procedure called shaping.

Shaping in Applied Behavior Analysis (ABA) seems simple: reward the response that's a little closer to the goal, and stop reinforcing less accurate responses. The harder part is determining when to shift and keeping the whole clinical team consistent.

Below, learn how shaping works session to session and how it stacks up against prompting and chaining.

What is shaping in ABA?

Shaping in ABA is a teaching procedure that rewards small steps toward a goal behavior until the learner can do the whole behavior on their own.

Instead of waiting for a perfect response, the criterion for reinforcement moves each time the learner clears it, so yesterday's acceptable answer no longer earns a reward today.

Two things happen at the same time during shaping: 

• Successive approximations: The learner’s gradually improving versions of the behavior
  
• Differential reinforcement: The technique of rewarding only responses that meet a specific, moving target 

For example, to teach a learner to say "water," you might first reward "wa." Next, you might only offer a reward once they add the second syllable, then finally hold off until they say the full word.

How does shaping work in ABA therapy?

Shaping in ABA works by moving the goal forward in small, planned steps. A BCBA usually maps out this progression as part of a skill acquisition plan, including:

• The terminal behavior: the final skill you're building toward
• The mastery criterion, for example, 80% accuracy across three sessions, to show that the learner has acquired the skill
• A rough sequence of approximations along the way
• What counts as an acceptable response at each step, so Registered Behavior Technicians (RBTs) stay consistent with reinforcement

Shaping can target almost any measurable part of a behavior, including how loud, how long, how accurate, or how independent a response is.

That flexibility is what makes it useful across goals like communication, self-care, and building tolerance for new foods, textures, or environments.

What does shaping look like in ABA sessions?

Shaping shows up any time a clinician rewards small, honest progress rather than waiting for a perfected skill. Here’s an everyday example of shaping in action, plus two instances of success from the literature.

Building daily living skills

If a learner is working on independent handwashing, you might reward turning on the tap first, then wetting their hands, then adding soap.

Each step becomes the new target once the learner has mastered the one before it.

Building eye contact

In one study, three preschool-aged children with autism spectrum disorder learned to hold eye contact with an instructor for 3 seconds.

The researchers used shaping to build duration gradually and skipped physical prompts. A month later, all three children still held eye contact on their own.

Increasing food acceptance

In another study, children with autism who strongly avoided new foods were introduced to four new foods through a step-by-step shaping process.

By the end of the study, every child accepted all four foods and ate a wider range overall.

Shaping vs. prompting vs. chaining: What's the difference?

Shaping, prompting, and chaining all teach new skills, but they work in different ways:

In practice, BCBAs often combine these techniques. A program might start with errorless prompting to introduce a skill, then rely on shaping to refine accuracy and independence once the learner has the basic idea.

Once a new skill is in place, generalization strategies help learners transfer the skill to different interactions and environments. 

Track shaping progress in ABA with Passage Health

Shaping in ABA only works if you can see how consistently approximation criteria are being reinforced session to session. That's hard to do when busy RBTs are reporting from memory or on paper data sheets.

Passage Health’s mobile app captures shaping data in real time. That data syncs to our platform automatically, so nothing gets rebuilt from memory, and the data flows right into reporting and billing.

Passage Health was built to simplify ABA. Here’s how it handles day-to-day operations:

• Consistent pacing: Set rate, interval, and duration timers that can start automatically, based on the learner’s phase, to help RBTs maintain a steady pace and spend more time observing.
• Graphs built for approximation-level decisions: As data comes in, graphs with phase and trend lines help you see granular progress.
• Swifter documentation: Our integration with Frontera AI means first drafts of documents are generated from your session data and reflect your program, not a rigid template. You can customize permissions to limit who can view, edit, or create each document.
• Simplified reauthorization and billing: Customizable treatment reports and claims pull straight from your session data. Saved signatures make sign-off simple, and expiring funding sources are flagged, to help your team keep track.
• Enhanced scheduling: Set up sessions and reassign staff with color-coded calendar views you can filter by billing code, certification, and care team. 
• Practice-wide reporting: Track performance and utilization across your team.
• Organized leads: Our Client Intake feature helps you track prospective clients and collect their information, to minimize the lag before initial assessment.

All of this connects in a single platform with a simple interface. Every new practice receives 1:1 onboarding support, and we add new features every quarter, based on requests.

Book a demo to see how Passage Health can help your team track shaping data and spend less time on ABA admin.

Frequently asked questions

What does shaping mean in ABA therapy?

Shaping means rewarding a learner for getting closer and closer to a goal, instead of waiting for a perfect response. To earn a reward, each new attempt has to be more accurate than the last.

What’s an example of shaping in ABA?

A common example is teaching a spoken word step by step, rewarding attempts before the learner speaks the full word consistently. Researchers have also found shaping to help with building eye contact and increasing the acceptance of new foods in children with autism spectrum disorder.

What are the two main components of shaping in ABA?

Shaping relies on differential reinforcement and successive approximations. Differential reinforcement means rewarding only the responses that move closer to the goal. Successive approximations are the responses themselves, which gradually get more accurate.

Is shaping the same as prompting in ABA?

No, shaping and prompting aren’t the same. Shaping builds a behavior by rewarding closer attempts over time, while prompting involves giving cues, then gradually fading out the level of support as the learner needs less help. 

How is shaping different from chaining in ABA?

Shaping builds a new behavior gradually through rewarded attempts, while chaining connects steps a learner already knows into a longer routine.

References

Cihon, J.H. (2022). Shaping: A brief history, research overview, and recommendations. In: Leaf, J.B., Cihon, J.H., Ferguson, J.L., Weiss, M.J. (eds) Handbook of applied behavior analysis interventions for autism. Autism and Child Psychopathology Series. Springer, Cham. https://doi.org/10.1007/978-3-030-96478-8_21

Fonger, A. M., & Malott, R. W. (2019). Using shaping to teach eye contact to children with autism spectrum disorder. Behavior Analysis in Practice, 12, 216–221. https://doi.org/10.1007/s40617-018-0245-9 

Hodges, A., Davis, T., Crandall, M., et al. (2017). Using shaping to increase foods consumed by children with autism. Journal of Autism and Developmental Disorders, 47, 2471–2479. https://doi.org/10.1007/s10803-017-3160-y