Key Points:
- Interval recording is a data collection method in ABA that measures whether behaviors occur during specific time intervals.
- It is useful for tracking high-frequency or ongoing behaviors in both clinical and home settings.
- Understanding its methods and benefits can help parents and therapists monitor progress effectively.
Behavior analysis has become an indispensable tool for helping children and adults with autism or other developmental delays achieve meaningful progress. Among its many tools, interval recording stands out as a practical way to measure behavior patterns over time. This article explains what interval recording in ABA therapy is, how it works, its various methods, and the benefits it provides for families and practitioners.
What is Interval Recording in ABA?
Interval recording in ABA is a method of observing and recording whether a specific behavior occurs during predetermined time intervals. It allows therapists to break down observations into manageable chunks, providing a clear picture of behavior frequency without needing to monitor the entire session continuously.
For example, if a therapist wants to track how often a child engages in hand flapping, they might use interval recording to observe and record whether the behavior happens during 10-second intervals across a 20-minute period. This method is ideal for monitoring both high-frequency behaviors and behaviors that may not have a clear start or end.
Interval recording is particularly valuable because it offers a structured, flexible way to measure behaviors. Here’s why this method is frequently used:

Types of Interval Recording
Interval recording comes in three main types: whole interval recording, partial interval recording, and momentary time sampling. Each has unique applications based on the behavior being tracked.
1. Whole Interval Recording
With whole interval recording, the behavior is recorded only if it occurs for the entire duration of the interval.
- When to Use: Best for tracking behaviors you want to increase, such as staying on task or maintaining eye contact.
- Example: If intervals are 30 seconds long, and the child stays seated for the full 30 seconds, the behavior is marked as occurring.
- Advantages: Provides a conservative estimate, making it ideal for teaching and reinforcing desired behaviors.
- Limitations: May underestimate behaviors if they occur but don’t last the entire interval.
2. Partial Interval Recording
Partial interval recording notes whether the behavior happens at any point during the interval, even if it occurs briefly.
- When to Use: Effective for behaviors you want to reduce, such as yelling or hitting.
- Example: If the child yells at any moment during a 10-second interval, the behavior is marked as occurring.
- Advantages: Useful for tracking behaviors that happen frequently or sporadically.
- Limitations: Tends to overestimate the frequency of the behavior, so it’s less accurate for measuring exact duration.
3. Momentary Time Sampling
With momentary time sampling, the observer checks for the behavior at the exact moment the interval ends.
- When to Use: Best for ongoing behaviors, like sitting quietly or staying in one location.
- Example: At the end of each 15-second interval, the therapist looks up to see if the child is still seated.
- Advantages: Easy to implement and less time-intensive than other methods.
- Limitations: Can miss occurrences that happen between intervals.
Steps for Implementing Interval Recording
To effectively use interval recording in ABA, follow these steps:
- Define the Target Behavior
Be specific about what you’re measuring. For example, “staying seated” could mean the child’s bottom remains on the chair for the duration of the interval. - Choose the Interval Length
Decide on the duration of each interval based on the behavior’s frequency and context (e.g., 10 seconds, 30 seconds, or 1 minute). - Select the Recording Method
Determine whether whole interval, partial interval, or momentary time sampling is the best fit for your goals. - Record Data Consistently
Use a timer or app to stay on track, and make sure to record data for each interval accurately. - Analyze and Adjust
Review the data to identify patterns or trends. Adjust the intervention plan as needed to address problem areas or build on successes.
Benefits of Interval Recording in ABA
Interval recording offers numerous advantages for parents, therapists, and educators working with individuals receiving ABA therapy.
- Efficient Data Collection
Interval recording allows for meaningful data collection without requiring constant observation. - Adaptable Across Settings
Whether used in the classroom, clinic, or home, interval recording is a versatile tool for tracking behaviors. - Improves Intervention Planning
By breaking behavior into measurable intervals, therapists gain valuable insights for refining treatment strategies. - Empowers Parents
With a little training, parents can use interval recording to monitor behaviors outside therapy sessions, promoting consistency across environments. - Tracks Progress Over Time
Interval recording provides an ongoing record of behavior trends, helping teams evaluate whether goals are being met.

Interval Recording ABA: Tips for Parents
Parents often play a key role in implementing interval recording at home. Here’s how you can make the most of this technique:
- Set Clear Expectations: Understand the specific behavior you’re tracking and what qualifies as “occurring.”
- Stay Organized: Use tools like data sheets, timers, or ABA apps to simplify the process.
- Celebrate Small Wins: Reinforce positive behavior by celebrating when your child shows improvement, even in small increments.
By engaging in the process, parents can collaborate with therapists to create a more cohesive treatment plan for their child.
Partner with Steady Steps ABA
Understanding interval recording in ABA empowers parents and therapists to track progress and make data-driven decisions. Whether you’re working on reducing problem behaviors or building essential skills, this method offers a practical way to measure success.
At Steady Steps ABA, we specialize in providing personalized ABA therapy that meets the unique needs of every child. From data-driven techniques like interval recording to individualized intervention plans, our goal is to support your family’s journey toward meaningful progress.
We proudly offer ABA therapy for families in Maryland and nearby areas. Contact us today to learn more about how our ABA therapy services can benefit your child!