How to Write an ABA Behavior Intervention Plan: 8 Steps

You've got the assessment data you need. Now you're staring at an intervention plan template, and the definition you’ve just typed feels too vague for two team members to score the same way.

That gap, between good assessment data and a plan staff can run consistently, is where behavior intervention plans (BIPs) can fall apart. Here's a breakdown of the steps for building a BIP that your whole team implements the same way, session after session.

What is an ABA behavior intervention plan?

In Applied Behavior Analysis (ABA) practices, a BIP is a document based on the findings of a functional behavior assessment (FBA).

This plan lays out the strategies your team will use to reduce a specific challenging behavior and teach a replacement behavior that serves the same purpose in a more appropriate way.

A complete BIP typically includes:

• A clear, observable description of the challenging behavior (or “target behavior”)
• A hypothesis of what the behavior achieves for the learner (its “function”)
• A replacement behavior that serves the same function
• Strategies to reduce triggers before the behavior happens
• Teaching and reinforcement strategies to help the learner master the replacement behavior
• A response strategy for when the target behavior still occurs
• A plan for collecting and reviewing data

The initial assessment of the behavior’s function is crucial for an effective BIP. Research indicates that plans built on a completed FBA lead to a large drop in the target behavior, whereas plans that skip this step show little to no effect.

What you need before writing a BIP

Before you start writing, you’ll need to gather:

• Complete FBA data, such as from interviews with caregivers and direct observation of the learner
• Baseline data on how often, how long, and how intensely the target behavior occurs
• Recent skills assessment results, so your goals will reflect what the learner already knows
• Input from caregivers, teachers, and any team members who see the behavior in different settings

Give yourself more than one sitting to write a BIP. Writing strategies under time pressure can mean leaving out key details.

How to write an ABA behavior intervention plan: Step by step

These eight steps turn your FBA findings into a plan your whole team can carry out consistently.

Step 1: Confirm the function with completed FBA data

Review your interviews, ABC data, and direct observations, for instance.

If the data points you in conflicting directions or doesn’t suggest a clear intervention strategy, schedule a follow-up observation before you start writing the plan. 

Step 2: Define the target behavior in observable terms

Write a definition specific enough that two people watching the learner would agree on whether the behavior occurred at a given moment.

Skip subjective labels like “aggressive” or “noncompliant.” Instead, describe exactly what the learner does, for example: “Throws objects more than 3 feet from their original location.”

Using objective, dignity-respecting language will shape how the whole team talks about the learner.

Step 3: Write the hypothesized function statement

Summarize what the FBA data suggests is maintaining the behavior. The function might be access to attention, escape from a demand, access to a preferred item, or sensory input.

A simple structure like this works well: “Based on [assessment data], [behavior] is likely maintained by [function].”

Keep it to one or two sentences that your whole team can repeat back to you.

Step 4: Set a goal and choose a replacement behavior

Choose a replacement behavior that serves the exact same function as the target behavior.

For example, a learner who throws objects to escape a task might be taught to hand over a “break” card instead.

Research confirms that teaching a matched replacement behavior produces large drops in the challenging behavior alongside meaningful gains in the new skill.

Step 5: Choose antecedent strategies

List changes that reduce triggers before the challenging behavior has a chance to start.

Depending on the function, this might mean offering the learner choices, giving them notice before transitions, or adjusting the difficulty of a task.

These strategies won't eliminate the behavior on their own, but they give the replacement behavior room to work.

Step 6: Choose teaching and reinforcement strategies

Specify exactly how staff will teach and reinforce the replacement behavior. Think about:

• The hierarchy of prompts your team will use
• What counts as a correct response
• The schedule of rewards (reinforcements) to support the teaching

Just like when you’re defining the challenging behavior, using vague language, like “reinforce appropriate behavior,” leaves too much room for interpretation across different staff members.

Step 7: Add a response strategy for the target behavior

Describe Registered Behavior Technicians (RBTs) should do if the target behavior happens anyway.

Your BIP’s response strategy should be specific and consistent. Let the team know what to say and do, as well as what not to reinforce. You should also describe any safety steps if the behavior poses a risk.

A response strategy applied inconsistently risks undermining even well-designed plans.

Step 8: Build in data collection, graphing, and fidelity checks

Detail in your plan how data will be collected and tracked, and how often you'll review trends in the data to assess the learner’s progress.

Also describe your schedule for checking fidelity: how accurately and consistently your RBTs are implementing the intervention plan.

Procedural fidelity correlates with client outcomes, which confirms that a well-written plan can still underperform if staff don't deliver it consistently.

Common BIP mistakes to avoid

To keep the plan working the way it's designed to, watch for these errors:

Writing strategies that miss the function

Double-check every strategy against your function statement as you’re completing your BIP. A plan designed to address attention-seeking behavior won't work if the strategies target escape-motivated behavior instead.

Cut or rewrite anything that doesn't match up.

Defining the target behavior too vaguely

“Acts out” won't hold up when two different RBTs are watching the same moment and logging different data. If your definition still leaves room for interpretation, it's not ready.

Test it with a new staff member before you finalize the plan.

Skipping the replacement behavior

A plan dedicated to stopping a challenging behavior leaves the learner without a way to meet that same need, so the behavior usually comes right back, sometimes in a new form.

Leaving fidelity unchecked

A plateau in progress can mean that the plan needs a rewrite, or it can mean that staff aren't running it as written.

Schedule fidelity observations regularly, not only when progress stalls. Slips in implementation are simpler to fix before they turn into a pattern.

Manage ABA behavior intervention plans with Passage Health

A BIP only helps a learner if every RBT carries it out the same way, session after session.

Passage Health brings clinical documentation, scheduling, and billing into one system built around that kind of consistency.

• Mobile data collection: RBTs log session data against the plan's target and replacement behaviors right in the Passage Health app, with rate, interval, and duration timers that start automatically based on the plan's phase. Data syncs to the platform automatically, so nothing has to be reconstructed from memory before a fidelity review.
• Custom documentation: Design session notes to match the target behavior, replacement behavior, and strategies you've built into the plan. Progress graphs update automatically as session data flows in, and it’s simple to pull customizable treatment reports for team reviews, caregiver updates, or authorization renewals.
• Tailored permissions: Set role-based rules for who can view, edit, or create session notes, so documentation stays consistent as staff change.
• Enhanced scheduling: Assign and reassign staff from a color-coded calendar you can filter by certification, care team, or billing code. Create or adjust events directly from the mobile app when plans change at short notice.
• Reporting and insights: Dashboards give clinical directors visibility into caseloads and trends across their practice.
• Client intake and electronic billing: Track prospective clients through your intake pipeline, and once a learner is enrolled, generate and manage claims directly from their data, all in one system.

Our integration with Frontera AI allows behavior analysts to draft summaries and reports straight from session data, so they spend less time with a blank page and more time focusing on learners.

We keep the platform and app simple to use, and every new practice gets 1:1 onboarding from a team that stays dedicated. We add new features every quarter based on our clients’ requests.

Book a demo to see how Passage Health can help your team implement every BIP consistently, from the first session through the next review.

Frequently asked questions

What's the difference between an FBA and a BIP?

A functional behavior assessment (FBA) identifies why a behavior occurs, while a behavior intervention plan (BIP) turns those findings into strategies to address the behavior and teach a more appropriate replacement. A completed FBA is necessary for writing an effective BIP.

Who writes a behavior intervention plan?

A Board Certified Behavior Analyst typically writes a BIP after they’ve reviewed the FBA. Registered Behavior Technicians and the learner’s caregivers then carry out the plan.

How often should a behavior intervention plan be reviewed or updated?

Review a BIP on a set schedule, often every few weeks, and update it whenever the learner has met a goal, their progress has plateaued, or a new program has started. A sudden change in the behavior itself also calls for a review.

What should be included in a behavior intervention plan?

A BIP should include a detailed definition of the target behavior, identify the likely function and describe a matched replacement behavior. It should also spell out the antecedent, teaching, and response strategies technicians should use to teach and reinforce that replacement behavior. A BIP should also map out the plan for tracking and reviewing session data.

References

Blair, K.-S. C., Park, E.-Y., & Risse, M. R. (2025). A meta-analysis of functional communication training for young children with ASD and challenging behavior in natural settings. Behavioral Sciences, 15(12), 1688. https://doi.org/10.3390/bs15121688

Brady, L., Padden, C., & McGill, P. (2019). Improving procedural fidelity of behavioural interventions for people with intellectual and developmental disabilities: A systematic review. Journal of Applied Research in Intellectual Disabilities, 32(4), 762–778. https://doi.org/10.1111/jar.12585

Hurl, K., Wightman, J., Haynes, S. N., et al. (2016). Does a pre-intervention functional assessment increase intervention effectiveness? A meta-analysis of within-subject interrupted time-series studies. Clinical Psychology Review, 47, 71–84. https://doi.org/10.1016/j.cpr.2016.05.003