What is a Motivating Operation (MO) in ABA Therapy?
In Applied Behavior Analysis (ABA) therapy, a Motivating Operation (MO) is an environmental event or condition that temporarily changes the value of a reinforcer and increases or decreases the likelihood of behaviors associated with that reinforcer.
In simpler terms, an MO influences how much a person “wants” something and how hard they will work to get it. Motivating operations are critical in understanding why a behavior occurs in a specific moment.
For children with autism, recognizing and manipulating motivating operations helps ABA behavior technicians encourage functional communication, reduce interfering behaviors, and teach new skills more effectively.
Motivating operations fall into two categories:
- Establishing Operations (EOs): Increase the value of a reinforcer and make behavior more likely
- Abolishing Operations (AOs): Decrease the value of a reinforcer and make behavior less likely
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Examples of Motivating Operations in ABA Therapy
Example 1: Using Deprivation as an EO
A child hasn’t had access to their favorite toy all day. When the behavior technician offers the toy contingent on saying “play,” the child is more likely to attempt the word. The lack of access (deprivation) acts as an establishing operation, increasing the toy’s reinforcing value and the behavior linked to getting it.
Example 2: Using Satiation as an AO
If a child has had several servings of goldfish crackers, offering them more may not motivate the child to complete a task. The satiation acts as an abolishing operation, reducing the value of the reinforcer and the likelihood of task completion.
Example 3: Escape as a Reinforcer
If a student has been engaged in a difficult task for a long time, the opportunity to take a break becomes more valuable. This increased value of escape functions as an EO, making behaviors like asking for a break more likely.
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FAQs About Motivating Operations in ABA Therapy
How is a motivating operation different from a discriminative stimulus (SD)?
A discriminative stimulus (SD) signals that reinforcement is available if a behavior occurs. A motivating operation (MO), on the other hand, affects how valuable the reinforcer is at that moment. MOs change the motivation, while SDs signal opportunity.
Can motivating operations help reduce interfering behavior?
Yes. By altering the value of reinforcers, behavior technicians can decrease the motivation for certain interfering behaviors and increase appropriate alternative behaviors.
Are motivating operations always related to basic needs?
Not always. While common MOs involve hunger, thirst, or fatigue, others may relate to access to attention, sensory input, or avoidance of specific tasks.
Do MOs apply to adults or just children with autism?
Motivating operations are part of behavioral science and apply to all ages. However, in ABA therapy, they’re most often applied to children with autism to teach communication, social, and life skills.
How do ABA therapists assess motivating operations?
Behavior technicians observe behavior patterns, conduct preference assessments, and collect data over time to identify what environmental factors act as MOs for each individual.
Key Takeaways About Motivating Operations in ABA Therapy
- A motivating operation (MO) temporarily changes the value of a reinforcer and the likelihood of behaviors tied to it.
- MOs are classified as establishing operations (EOs) or abolishing operations (AOs).
- Understanding MOs helps ABA behavior technicians increase functional behaviors and decrease interfering ones.
- Examples include deprivation, satiation, and the desire to escape or gain attention.
- MOs are foundational in creating effective and ethical ABA therapy plans tailored to each child’s unique needs.
