The process of Applied Behavior Analysis relies on the last word of the term: analysis. While perhaps not the most riveting topic for most people (unless you’re a scientist or a behavior analyst), the analysis of data is the cornerstone for effective behavior therapy.
ABA practitioners collect and analyze data so that the decisions we make are objective and based on fact, not on what we think is happening. In this article, we’re going to look at what happens behind the scenes when the data shows that a child isn’t making progress as expected, and what we can do about it.
The “Plateau” Phenomenon: Why Progress Isn’t Always a Straight Line
Before we dive into why progress isn’t always linear, let’s talk about how we recognize the phenomenon. A child starting an ABA program will typically have a variety of goals in their treatment plan. We’ll name our example child Anna. Anna has 30 different goals in her treatment plan, all based on skills she needs to acquire to navigate her environment successfully. Keep in mind that in most situations, treatment plans cover a 6-month period. At first, Anna meets a new goal every 4-5 sessions. Her progress is stellar, and her parents are thrilled. After the first 6 weeks of sessions, however, it takes 4 or 5 weeks for Anna to meet a goal. Her parents are concerned and question why progress seems to be slowing down so much.
If I were the behavior analyst leading Anna’s case, my first step would be to meet with Anna’s parents and express how very natural it is for people to experience “stalls” while learning new skills. Learning is not a linear process for anyone. Children with support needs, neurotypical children, and even adults experience plateaus when acquiring skills, especially complex skills. When conducting data analysis, a “plateau” is when a graph shows a flat line for a few sessions, even though the individual is participating in an intervention program. Let’s look at a couple of example graphs of what Anna’s data might look like:
When she first started ABA, she learns quickly and acquired the skill after only 4-5 intervention sessions.
Here is the kind of graph that might be causing concern for Anna’s parents. In this graph, Anna is working on responding appropriately when she is told, “No.” These sessions took place in May 2022, and therapists again collected data on how many times Anna responded appropriately to hearing the word “No” out of the opportunities she heard it. Notice the plateau starting on May 13th: Anna is responding appropriately 70% of the time, and that doesn’t increase. The graph shows a flat line until May 19th, when the graph ends. According to this graph, Anna is participating in intervention sessions every day but isn’t making progress in the skill anymore.
In addition to looking at flat trends, clinicians also examine variability and level changes to determine whether the skill is stabilizing or truly stalled. While graphs like these provide a ton of information to Anna’s ABA team, the most important thing they need to recognize is that something in Anna’s program needs to change. A data plateau isn’t a failure of the child; it’s a signal to the clinical team that the environment or the instruction needs to change.
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Common Culprits: 5 Reasons Progress Stalls
Since Applied Behavior Analysis therapy is individualized for the child, there are an infinite number of reasons progress may stall. With that said, there are a few reasons more common than others that practitioners will notice most often. The saying, “When you hear hooves, think horses, not zebras.” comes to mind for these types of situations.
1. The “Step” is Too Big:
Sometimes a goal (e.g., “washing hands”) is too broad. Complex skills that involve multiple steps usually need to be broken down into smaller, more specific steps. The technical term is a “task analysis,” and can consist of how few or how many steps a practitioner deems necessary for the child they are working with. Here are examples of task analyses I have personally used with two different, unique clients:
| Handwashing (brief) | Handwashing (detailed) |
| Turn on water | Put hand on faucet handle |
| Get soap | Push handle up (or turn handle) |
| Scrub hands together | Place both hands under running water |
| Rinse hands | Place hand on soap pump |
| Turn off water | Hold other hand under soap pump |
| Dry hands | Push soap pump down |
| Scrub hands together for 20 seconds | |
| Rinse all soap bubbles off hands | |
| Put hand on faucet handle | |
| Push handle down (or turn handle) | |
| Obtain towel | |
| Dry all water off of hands |
2. Reinforcer Satiation:
Satiation occurs when an individual is fully satisfied with a specific item or activity. If a child has played the same iPad game for 6 months as a reward for learning new skills, it may lose its motivational power.
3. Lack of Generalization:
Generalization occurs when an individual can demonstrate a skill across settings, with different people, and in a variety of situations. The child can do the skill with their favorite RBT at the table, but not with their mother in the kitchen at home. Goals shouldn’t be considered met until they have generalized; as practitioners, we want a child to be able to function in their daily environment, not just in our clinical setting. Often, generalization needs to be specifically addressed- it doesn’t just happen magically.
4. Competing Behaviors:
Sometimes kids are just being kids and find a behavior that’s more fun than what they’re supposed to be doing. Running into the bathroom and hiding so the therapist has to come find you is way more entertaining than sitting at a table pointing at pictures.
5. Undetected Barriers:
High-quality practitioners consider the whole child when analyzing their behavior, not just data points on a graph. If a child is not getting enough sleep, nourishment, or sensory support, they may not make progress as expected. If a child’s rate of progress suddenly changes, it’s important to look at what variables could be affecting their performance.
The BCBA’s Troubleshooting Toolkit: How We Pivot
Once a practitioner recognizes a stall in a child’s progress, there are a few steps to start with that will help figure out possible solutions:
- Preference Assessment: Sometimes a child’s interests change, but they aren’t able to express that without a little help. A preference assessment ranges from physically presenting a child with options to choose from to simply asking the child what they may want to earn during sessions.
- Changing the Prompt Level: Prompting a child to engage in the correct response is a delicate balance. Providing prompts that are too invasive may create a dependency on the prompt. On the other end of the spectrum, a child may be frustrated with a new skill, but the therapist isn’t using a strong enough prompt. Modifying the prompt level may help the child continue making progress.
- Environmental Modifications: Sometimes the “fix” is as simple as changing the lighting, moving to a different room, or using a standing desk. Children participating in ABA therapy are humans, too, and we all tend to get bored of being in the same setting surrounded by the same sights for too long. While not a specific behavioral intervention, it may still help kickstart learning.
- Switching Teaching Styles: There are different teaching styles in ABA, including DTT (Discrete Trial Training) and NET (Natural Environment Teaching). DTT is a more structured, concrete method for teaching and is typically done at a table in the clinical setting. NET, on the other hand, requires the therapist to incorporate goals into a more play-based, child-led session. In alignment with the individualization component of ABA, each child will benefit from different teaching styles.
Once a change has been made, the next essential step is to let the data guide further decisions. I caution practitioners to avoid 1) changing too many variables at one time and 2) not waiting enough time to see if the change works.
Questions Parents Should Ask Their BCBA
In all aspects of the phrase, ABA therapy is a team effort. Parents should always feel comfortable asking the BCBA leading their child’s case questions and communicating any concerns they have. The following list includes questions with keywords that an effective BCBA should be able to answer about your child’s progress, based on the data collected during sessions:
- “Can we look at the cumulative graphs for my child’s treatment plan?”
- A cumulative graph will show the total number of skills that have been met over a certain amount of time. Cumulative graphs may show that while your child is not making significant progress in one area, they have mastered 5 goals in 2 weeks in another area.
- “What is the current mastery criteria for this goal, and is it too high/low?”
- The mastery criteria for a goal specify the point at which the goal is considered achieved. Mastery criteria will most often be formatted with a performance criterion followed by a time period criterion; for example, “Anna will appropriately request help with at least 80% accuracy across 5 sessions.” Goals with mastery criteria that are too short (only 2-3 sessions) may not ensure that the goal is truly achieved and maintained over time, while goals with mastery criteria that are too high (expecting the child to perform with 100% accuracy all the time) may not give the child a chance to succeed.
- “Is my child showing assent (willingness) during this specific program?
- While children cannot legally provide consent to receive medical care or therapy, they can absolutely give their assent. Children who are willingly participating in therapy will demonstrate assent through the words, actions, and overall affect during therapy sessions. A child who is willing to participate in therapy will make more significant progress than a child who does not assent to therapy or specific programs within their treatment plan.
- “How can I practice this specific skill during our daily routine?”
- Your ABA practitioners will be able to provide training via modeling and role-playing on how to work skill practice into your everyday routine. They should also caution, however, that intense skill practice should be saved for therapy sessions to avoid therapy fatigue and further pauses in learning.
When a Plateau is a Sign of Burnout
Not every plateau is the result of a programming error. Sometimes, the data are pointing to capacity. If progress stalls across multiple targets, variability increases, or previously mastered skills begin to regress, clinicians need to widen the lens beyond instruction.
Therapy fatigue may present as increased escape-maintained behaviors, reduced attention to instruction, irritability during transitions, or general avoidance of session materials. Caregivers may also report broader changes in sleep, appetite, or overall regulation. These patterns are not signs of defiance; they are indicators that the balance between demand and reinforcement may need to be considered.
High-quality ABA is defined by responsiveness to the individual’s needs. When fatigue is suspected, the solution is not to increase demands but to adjust them. A “therapy refresh” might include shortening sessions, shifting to more natural environment teaching, rotating therapists, or dedicating time to pairing and rapport-building. From a behavioral standpoint, ethically reducing demand can restore motivation and strengthen instructional control. A refresh is not a setback; it is a strategic reset designed to protect the child’s capacity for sustainable learning.
Conclusion: Data is Our Compass
A plateau in ABA is not a verdict on your child’s ability, and it is not a sign that therapy is no longer effective. It is data doing exactly what it is supposed to do: giving us information. Sometimes that information tells us to break a skill down further. Sometimes it tells us to strengthen motivation, adjust prompting, or focus on generalization. Occasionally, it tells us to slow down and protect the child’s capacity to learn. In all cases, the response should be thoughtful, individualized, and collaborative. Data are not a report card for your child — they are a compass for the team. When progress levels off, we don’t question the learner. We analyze the environment, adjust the plan, and keep moving forward with precision and care.
