Backward Chaining in ABA: 5 Steps, Examples & Pitfalls
Tasks like washing your hands have several steps: turn on the water, get soap, scrub, rinse, turn off the water, then dry your hands. A learner on the autism spectrum often needs each step taught and reinforced on its own before the steps can be linked into a routine.
Backward chaining in Applied Behavior Analysis (ABA) flips the order, so the learner starts with the final step, then moves on to the one before it and every earlier step in turn. Whether it’s the right pick depends on the learner and the skill, and that’s the call we walk through below.
What is backward chaining in ABA?
Backward chaining is a teaching method that starts with the final step of a task and works backward until a learner can complete every step without help.
Before backward chaining starts, a Board Certified Behavior Analyst (BCBA) lists each step a skill requires, in the order it happens.
That list is called a task analysis, and it becomes part of a learner's skill acquisition plan, so a Registered Behavior Technician (RBT) teaches the steps the same way every time.
The end goal is the terminal behavior. That's the fully independent version of the skill a BCBA is teaching toward, whether it gets taught forward, backward, or all at once.
At first, the learner is guided through every step except the last one, which they're taught to do alone. As each step is mastered, the teaching focus moves one step earlier, until no prompts are left.
How does backward chaining work in ABA?
A backward chaining program starts at the last step of a task and adds earlier steps one at a time, until the learner can run the whole sequence alone.
A typical program looks something like this:
- Write a task analysis for the skill and identify its final step.
- Prompt the learner through each step before the last.
- Teach the final step with as much help as the learner needs, fade that help until they do it independently, and reinforce each success right away.
- Once that step holds steady across the sessions your mastery criterion calls for, move one step earlier and repeat.
- Keep moving backward through the task analysis until the learner completes the whole sequence unassisted.
Its main draw is timing, since the payoff arrives the moment the learner completes the final step.
Backward chaining example: handwashing
Handwashing is a hygiene skill often taught with prompting and task analysis. A simplified version breaks it into six steps:
- Turn on the water.
- Get soap.
- Scrub hands.
- Rinse hands.
- Turn off the water.
- Dry hands.
In week 1, the therapist prompts the learner through steps 1 to 5. The learner then dries their hands alone and gets reinforced right away with praise or a preferred item.
In week 2, the learner turns off the water and dries alone. Turning off the water is the new step, so it gets the most prompt support at first, and that support fades as the learner gets it right.
In week 3, the learner rinses, turns off the water, and dries alone, and the therapist prompts only the first three steps. The next weeks add scrubbing, getting soap, and turning on the water, one at a time, until the learner runs the whole routine without help.
The weeks are only an example. A BCBA moves to an earlier step once the learner meets a set mastery criterion, so some steps take longer than others. In one practitioner survey, the most common criterion was 80% accuracy across three consecutive sessions. The same study found that the bar may be too low for some learners to keep the skill over time.
Backward chaining vs. forward chaining and total task presentation
Backward chaining, forward chaining, and total task presentation differ in which step gets taught first and how much of the task a learner attempts in early sessions.
No single method is most effective. One head-to-head comparison of forward and backward chaining found that neither method was reliably faster, and results varied by child and task.
Forward chaining
Forward chaining teaches the first step of a task to mastery before moving on. The therapist completes the rest of the steps until the learner is ready to add the next one, then keeps working through the sequence in order.
Backward chaining
Backward chaining teaches the last step of a task first. The early steps are prompted, and the final step is the one taught to independence first. This way, the learner finishes the task (and gets reinforced for it) from the first session.
Total task presentation
Total task presentation has the learner attempt every step of a task in every session. The therapist prompts only the steps that still need support, and fades those prompts as the learner gets more consistent.
When should you use backward chaining?
Backward chaining works well when a task's biggest reward sits at the end, or when a learner needs an early win to stay engaged through a longer skill.
A BCBA usually checks a learner's current abilities with a skills assessment before assigning any chaining method. From there, a few signals point toward backward chaining:
- The natural reward (what the task itself produces), like a finished snack or a completed puzzle, happens at the last step.
- The learner gets frustrated or disengages when a task is started but not finished.
- The skill is long enough that running every step each session would tire out the learner.
Self-care routines like dressing and self-feeding are common fits, and so are vocational tasks, since each one ends with a clear payoff for the learner.
Common mistakes to avoid with backward chaining
Backward chaining programs tend to stall for the same few reasons, and most trace back to decisions made before the first session.
Leaving untaught steps unprompted
In one study of adults with developmental disabilities, finishing the untaught steps out of the learner’s view was the least efficient option, while prompting the learner through them led to the fastest mastery.
Guide the learner through those steps with a prompt hierarchy instead, and pair it with errorless prompting so the learner makes fewer mistakes and stays focused on the step actually being taught.
Skipping a prompt fading plan
Without a prompt fading plan, a learner can start relying on the prompt itself to know when to act.
Write the fading plan before you start teaching a step, with exact criteria for dropping a prompt level, such as three correct responses in a row.
Writing a vague task analysis
A step written in vague terms gets taught differently by different RBTs, and progress data won't line up session to session.
Write each step in specific, observable terms, then test it by having someone else read it and perform the action exactly as written.
Track backward chaining programs with Passage Health
Running a backward chain means recording the prompt level for each step, session after session, often for weeks. That history is what tells a BCBA when to move one step earlier, and Passage Health keeps session data connected in one platform, alongside documentation and practice management.
During the session
- Step-by-step task analysis data: RBTs record a response for each step on the mobile app, using your custom prompt levels. If the connection drops mid-session, data you’ve recorded stays on the device, ready to save when you reconnect.
After the session
- Progression you set once: Automatic phase progression checks a target against the mastery criteria you’ve set and can move it to its next phase. Trial targets that use default prompt levels can fade prompts automatically, and templates let you reuse a progression across your practice.
- Graphs and customizable treatment reports: Graphs build automatically from the first data point, and customizable treatment reports pull them into the progress report you send for reauthorization.
- Billing that begins from the session: Session data flows into claims, and you can adjust service lines before you submit. Add a saved signature to a session note in one click.
Across the practice
- Scheduling built around your team: Filter color-coded calendars by billing code, certification level, and care team. Cancelled or unassigned sessions get flagged, and users with permission can create and edit events right from the mobile app.
- Custom permissions down to the session note: Decide role by role who can create, view, manage, lock, or export session notes.
- Reporting across your caseload: Authorization utilization, cancellations, and billing analytics are reported across every client in your practice.
- Client Intake: Collect leads through intake forms, send forms to caregivers through the caregiver portal, and convert leads into clients in the same system that runs their programs.
We ship new features every quarter, offer 1:1 onboarding, and keep a responsive support team on hand. The platform also integrates with Frontera AI for clinical AI features.
Book a demo to see one backward chain tracked from its first prompted step to full independence.
Frequently asked questions
What is backward chaining in ABA?
Backward chaining in ABA means teaching a task’s last step first, then shifting to the preceding step each time the current one is mastered. The learner ends up performing the whole task alone, one added step at a time.
What is the difference between backward chaining and forward chaining?
The difference between backward chaining and forward chaining comes down to the starting point. Backward chaining begins at the last step and works toward the first, while forward chaining begins at the first step and works toward the last.
What is an example of backward chaining?
An example of backward chaining is making a bed. The therapist does everything except the final step (placing the pillow), and the learner finishes by setting it in place. When pillow placement is reliable, the therapist hands off pulling up the comforter next, then smoothing the sheet, until the learner makes the bed without help.
What determines whether backward chaining is the right choice for a learner?
Whether backward chaining is the right choice usually comes down to where a task's reward sits, how long the sequence is, and how a learner responds to starting something they can't yet finish. A BCBA weighs these against the specific skill.
References
Griffen, B., Lorah, E. R., Caldwell, N., et al. (2024). The effects of artificial intelligence on implementors’ fidelity of instructional strategies during handwashing acquisition in children with autism. Journal of Developmental and Physical Disabilities, 36(5), 793–819. https://doi.org/10.1007/s10882-023-09937-1
Kobylarz, A. M., DeBar, R. M., Reeve, K. F., et al. (2020). Evaluating backward chaining methods on vocational tasks by adults with developmental disabilities. Behavioral Interventions, 35(2), 263–280. https://doi.org/10.1002/bin.1713
Richling, S. M., Williams, W. L., & Carr, J. E. (2019). The effects of different mastery criteria on the skill maintenance of children with developmental disabilities. Journal of Applied Behavior Analysis, 52(3), 701–717. https://doi.org/10.1002/jaba.580
Slocum, S. K., & Tiger, J. H. (2011). An assessment of the efficiency of and child preference for forward and backward chaining. Journal of Applied Behavior Analysis, 44(4), 793–805. https://doi.org/10.1901/jaba.2011.44-793
