What is Schedule of Reinforcement in ABA?
In Applied Behavior Analysis (ABA) therapy, a schedule of reinforcement refers to the specific rules that determine how and when a behavior is followed by a reinforcing consequence. These schedules are essential for teaching new skills, maintaining learned behaviors, and promoting generalization.
By controlling how often a reinforcer is delivered, ABA behavior technicians can increase or decrease the likelihood of a behavior occurring in the future. Reinforcement schedules are a fundamental part of behavior change programs and can be adjusted based on the learner’s needs, goals, and progress.
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Types of Schedules of Reinforcement in ABA Therapy
Schedules are typically categorized into two main types: continuous and intermittent reinforcement.
Continuous Reinforcement (CRF)
This means providing reinforcement every time the desired behavior occurs. CRF is typically used when teaching a new skill or behavior.
Example: A behavior technician gives a child a token every time they make eye contact during a session.
Intermittent Reinforcement
Intermittent schedules reinforce behavior occasionally, rather than every time. These are divided into four common types:
1. Fixed Ratio (FR)
Reinforcement is delivered after a set number of responses.
Example: A child receives a sticker after every 5 correct responses (FR-5).
2. Variable Ratio (VR)
Reinforcement is delivered after an average number of responses, but the number varies.
Example: A child gets a high-five after 3, then 7, then 5 responses, averaging to a VR-5 schedule. This is often used to build strong, resistant behaviors.
3. Fixed Interval (FI)
Reinforcement is delivered for the first correct response after a set period of time.
Example: A child is reinforced for sitting quietly the first time they do so after 10 minutes (FI-10).
4. Variable Interval (VI)
Reinforcement is given for the first response after varying time intervals, averaging around a certain time.
Example: A child is reinforced after 5, then 8, then 12 minutes for staying on task, averaging a VI-8 schedule.
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Why are Schedules of Reinforcement Important in ABA Therapy?
Using the right schedule of reinforcement helps:
- Shape and maintain new behaviors
- Fade reinforcement over time
- Promote generalization of skills to new settings or people
- Prevent dependency on constant reinforcement
- Encourage persistence in behavior (especially with variable schedules)
behavior technicians often start with continuous reinforcement and transition to intermittent schedules as skills become more established.
Examples of Schedules of Reinforcement in ABA Therapy
Example 1: Teaching Requesting Behavior
A child learning to request a toy may be reinforced every time they say the word during early stages (CRF). Once the skill is mastered, reinforcement might occur on a VR-3 schedule to maintain the skill.
Example 2: Reducing Interrupting Behavior
A behavior technician uses an FI-10 schedule to reward a child for refraining from calling out for 10-minute intervals. Over time, the interval may increase.
Example 3: Increasing Task Completion
A behavior technician uses a VR-5 schedule to reinforce a child completing academic tasks, promoting sustained effort.
FAQs About Schedules of Reinforcement in ABA Therapy
What is the best reinforcement schedule for teaching new skills?
Continuous reinforcement (CRF) is generally used when teaching a new behavior to ensure the connection between the behavior and reward is clear.
What schedule of reinforcement is most resistant to extinction?
Variable ratio schedules are the most resistant to extinction because the unpredictability makes the behavior persistent, even when reinforcement isn’t immediately given.
What is the difference between fixed and variable schedules?
Fixed schedules follow a predictable pattern (e.g., every 5 responses), while variable schedules change around an average, making them less predictable.
Can reinforcement schedules be combined?
Yes. Behavior technicians often adjust schedules based on behavior goals, such as starting with fixed ratio and transitioning to variable ratio for maintenance.
How does intermittent reinforcement promote skill generalization?
By reducing the frequency of reinforcement, intermittent schedules encourage a learner to demonstrate the behavior in new environments and across different people.
Key Takeaways: Schedule of Reinforcement in ABA Therapy
- A reinforcement schedule outlines how often a reinforcer is delivered after a behavior.
- There are five common schedules: CRF, FR, VR, FI, and VI.
- ABA therapy uses schedules to teach, maintain, and generalize skills.
- Behavior technicians may shift schedules over time to promote independence.


