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The ABC tracker

Record what happened before, during, and after a behavior so you can spot patterns and share observations with your BCBA.

1.Child nickname

A nickname is all this needs. It stays in this browser.

2.What are you noticing?

Select all that apply. You can also add your own.

3.What might the behavior be communicating?

This is for reflection and discussion with your BCBA. It is not a diagnosis.

4.ABC details

Add a few details about what happened. Tap a phrase or write your own.

What happened right before?(Antecedent)

What happened?(Behavior)

What happened right after?(Consequence)

5.Intensity (optional)

6.Duration (optional)

This tool helps you organize observations. It does not diagnose or replace professional guidance.

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Nothing here diagnoses or tells you what to do. If something you're seeing worries you, the export puts the facts in your BCBA's or pediatrician's hands. Crisis resources.

What your BCBA receives

A clear, organized summary of your entries that makes patterns easier to see.

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Week of Mar 2, 2026 – Mar 8, 2026

5 entries · Bean

Date / time	Behavior	Right before	Right after	Intensity	Duration
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One page per week, counts at the end, no interpretation. This sample uses made-up data.

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Understanding the function of behavior

Behaviors can serve a purpose. Learning to look for patterns can help you and your BCBA find supportive strategies.

Behaviors can serve a purpose
They may be a way to get something, avoid something, or meet a sensory need.
Look for patterns
Noticing what happens before and after can help you spot what the behavior might be communicating.
Discuss with your BCBA
Your observations can help guide support strategies at home and in other settings.

In ABA, the “function” of a behavior means what it tends to achieve for a child: getting attention, getting out of something, getting access to an item or activity, or meeting a sensory need. The same behavior can serve different purposes on different days.

That is why the before and after columns matter more than the behavior column. Over a few weeks, patterns in what came right before and what happened right after give your BCBA something concrete to work from.

Your guess in step 3 is recorded as your reflection. It helps the conversation; it isn't a conclusion. Your BCBA assesses function with their own tools.

How to use ABC data

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1
Observe and record
Jot down what happened before, during, and after. No need for perfection.
2
Look for patterns
Over time, you may notice common patterns in what comes before and what helps.
3
Share and plan
Bring your notes to your BCBA to support meaningful, collaborative planning.

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The ABC tracker

Log an observation

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