Key Points:
- Complex schedules of reinforcement in ABA combine multiple simple reinforcement schedules to address specific behaviors.
- Common types include concurrent, multiple, chained, mixed, and tandem schedules.
- These schedules are applied in ABA therapy to teach diverse skills and manage challenging behaviors effectively.
Behavioral science shows that reinforcement is one of the most effective tools for shaping behavior, particularly in Applied Behavior Analysis (ABA). While simple reinforcement schedules—like fixed or variable intervals—are widely known, complex schedules of reinforcement in ABA are crucial for addressing more intricate behaviors and teaching advanced skills. Let’s explore what they are, the types, and how they’re used in ABA therapy!
What are Complex Schedules of Reinforcement in ABA?
Complex schedules of reinforcement in ABA combine two or more simple reinforcement schedules to address specific behavior patterns. They allow behavior analysts to refine how and when reinforcement is delivered, making them highly effective for teaching more complex skills or managing intricate behaviors.
Unlike simple schedules (e.g., reinforcing every occurrence of a behavior), complex schedules may involve multiple conditions that determine when reinforcement is delivered. For example, a therapist might use a combination of fixed-interval and fixed-ratio schedules to reward a child for completing a series of tasks within a set timeframe.
These schedules are especially beneficial for shaping long-term behavior changes and ensuring the skills learned in therapy are maintained and generalized across various settings.

Why Are Complex Schedules of Reinforcement Important in ABA?
Complex reinforcement schedules offer flexibility and precision in behavior management. They address situations where simple schedules fall short. Here are a few reasons why they are indispensable in ABA therapy:
- Teaching Complex Skills
Many life skills, such as following multi-step instructions or managing self-regulation, require reinforcement at different stages. Complex schedules allow for this layered approach. - Managing Challenging Behaviors
Behaviors that are deeply ingrained or occur under specific circumstances can be addressed by combining schedules to systematically reduce their occurrence. - Promoting Generalization and Maintenance
Simple reinforcement schedules may result in behavior changes that fade over time. Complex schedules ensure that the behavior persists in various environments and contexts. - Customizing Interventions
Every individual is different. Complex schedules allow therapists to create personalized plans that cater to the unique needs of the learner.
Types of Complex Schedules of Reinforcement in ABA
Below are the key types of complex schedules of reinforcement used in ABA therapy, along with examples of how they work:
1. Concurrent Schedules
This type involves two or more reinforcement schedules available simultaneously, each linked to a different behavior.
- Example: A child can earn tokens for completing homework (fixed-ratio schedule) and additional tokens for practicing piano for 30 minutes (fixed-interval schedule). They can choose which behavior to focus on based on preference.
- Purpose: Useful for teaching choice-making and prioritization.
2. Multiple Schedules
In a multiple schedule, two or more simple schedules alternate, each associated with a specific stimulus or cue.
- Example: A teacher might use a fixed-interval schedule to reinforce completing math problems during class and a variable-ratio schedule during homework time. Each is signaled by a different environment or cue.
- Purpose: Helps learners associate specific behaviors with specific contexts.
3. Chained Schedules
Chained schedules involve a series of behaviors that must be completed in a specific sequence, with reinforcement provided only after the entire chain is completed.
- Example: A child learns to wash their hands by completing a chain: turn on the faucet, apply soap, scrub, rinse, and dry hands. Reinforcement is delivered only after the final step.
- Purpose: Ideal for teaching multi-step tasks or routines.
4. Mixed Schedules
This is similar to multiple schedules, but without any clear cue to indicate which schedule is in effect.
- Example: A child is reinforced for completing a task, but the reinforcement may be based on a fixed-ratio or variable-ratio schedule, with no indication of which schedule applies at any given time.
- Purpose: Promotes flexibility and reduces reliance on environmental cues.
5. Tandem Schedules
Tandem schedules are like chained schedules but without distinct cues between steps in the sequence.
- Example: A child practices tying their shoes without prompts between each step. Reinforcement is provided only after the entire sequence is complete.
- Purpose: Helps learners build independence in completing multi-step tasks.

How Are Complex Schedules of Reinforcement Used in ABA Therapy?
Behavior analysts carefully design complex reinforcement schedules to meet individual goals. Here’s how they are applied:
- Assessment and Goal Setting
The therapist evaluates the individual’s needs and identifies target behaviors that require reinforcement. - Schedule Selection
Based on the complexity of the behavior, the therapist chooses an appropriate combination of schedules. - Implementation
The chosen schedules are applied systematically during therapy sessions, with adjustments as needed. - Data Collection and Adjustment
Progress is tracked to determine the effectiveness of the schedule, and modifications are made to optimize outcomes.
Advantages of Using Complex Schedules of Reinforcement
Implementing complex schedules of reinforcement in ABA therapy offers several advantages:
- Improved Skill Acquisition: Encourages learning and retention of complex behaviors.
- Reduced Dependency on Prompts: Promotes independence by gradually removing cues.
- Flexibility: Can be tailored to suit different individuals and contexts.
- Enhanced Generalization: Ensures behaviors persist across various settings and situations.
Challenges of Complex Schedules and How ABA Therapy Addresses Them
While effective, complex schedules can be challenging to implement due to the need for precision and consistency. Parents may feel overwhelmed, and tracking progress can be difficult without professional guidance.
ABA therapists address these challenges by:
- Providing training and support for parents.
- Using data-driven methods to evaluate and adjust reinforcement plans.
- Simplifying schedules as needed to align with the learner’s progress.
How Empower ABA Can Help Your Child Thrive
Understanding complex schedules of reinforcement in ABA is crucial for addressing advanced behavioral needs and promoting long-term success. These schedules offer a sophisticated yet effective way to shape and maintain positive behaviors, teaching valuable skills for independence and growth.
At Empower ABA, we specialize in designing personalized ABA therapy programs that incorporate advanced techniques, including complex schedules of reinforcement. Our goal is to help your child thrive by creating strategies tailored to their unique needs.
We proudly serve families in New York, New Jersey, Virginia and surrounding areas. Contact us today to learn how our ABA therapy services can make a difference in your child’s development!