When it comes to understanding why behavior happens, motivation isn’t just a feeling. It’s science. In Applied Behavior Analysis (ABA), what we call motivation is something that happens before behavior, shaping when and why it occurs. 

These environmental conditions are known as Motivating Operations (MOs), and they play a powerful role in behavior change, both in therapy and everyday life.

What Are Motivating Operations?

In simple terms, a Motivating Operation is an event or situation that alters a person’s desire for something and their likelihood of acting to obtain it. MOs affect two things:

1. The value of a reinforcer or punisher.

2. The likelihood that behaviors linked to those consequences will happen.

For example, if you haven’t eaten all day, food becomes more reinforcing, and you’re more likely to find something to eat. If you just finished a big meal, food loses value, and that same behavior won’t happen.

The BCBA Exam Study Guide (6th Edition) explains that motivating operations are a key concept for understanding how environmental variables influence behavior and why the same person may act differently under different conditions.

Learn more about these foundations in the BACB Task List Section B.

 

Establishing and Abolishing Operations

There are two main types of motivating operations:

Establishing Operations (EOs) increases the value of a reinforcer and makes behavior more likely.

• Being tired increases the value of sleep.

• Feeling thirsty increases the value of water.

• Deprivation of attention makes social praise more reinforcing.

Abolishing Operations (AOs) does the opposite; they decrease the value of a reinforcer and make behavior less likely.

• After a long nap, sleep loses its value.

• Drinking a big bottle of water reduces the drive to drink more.

• Too much attention can make praise less meaningful.

In other words, EOs “turn on” motivation, while AOs “turn it off.” Both are constantly changing throughout the day.

For a deeper overview, check the Cambridge Center for Behavioral Studies. It’s a great source for understanding everyday behavior through ABA science.

 

Real-Life Examples of MOs

Motivating operations happen all the time:

• At work: A deadline increases the value of finishing a project — that’s an EO for productivity.

• In therapy: A child who hasn’t played with a favorite toy in a while may be more motivated to ask for it.

• In learning: A quiet classroom can serve as an AO for distractions, making focus easier.

• At home: A parent might notice that their child is more likely to complete tasks before screen time, because access to technology functions as a reinforcer.

Understanding these patterns helps behavior analysts design more effective sessions and parents create better learning environments at home.

You can explore how MOs interact with other ABA principles in our post The Power of Stimulus Control: Why Environment Shapes Behavior More Than Willpower.

 

Motivating Operations vs. Stimulus Control

It’s common to confuse MOs with discriminative stimuli (SDs), but they have different functions.

• MOs change how much you want something.

• SDs tell you how to get it.

Imagine you’re thirsty. That’s the MO; it increases the value of water. When you see your water bottle on the table, that’s the SD; it signals that drinking water will be reinforced. The act of drinking is the behavior that follows both conditions.

The BCBA Exam Study Guide emphasizes that MOs and SDs work together: the first sets the motivation, the second guides the response. Recognizing both helps analysts design interventions that truly work.

Why Motivation Comes Before Behavior

In ABA, motivation is an antecedent variable; it happens before behavior. It doesn’t cause action directly, but it creates the conditions that make behavior more likely.

For instance, a therapist teaching a child to ask for a snack will have more success when the child is hungry (EO) than when they’re full (AO). The same instruction, same reinforcer — but totally different results.

Motivation sets the stage for reinforcement to work. Without it, even the best teaching strategies may fail.

That’s why identifying MOs is critical for Functional Behavior Assessments (FBA) and Behavior Intervention Plans (BIPs). Knowing when reinforcement matters most ensures that learning opportunities are effective, ethical, and individualized.

 

Using MOs in ABA Practice

Here are simple ways practitioners and students can apply motivating operations effectively:

• Observe before you teach. Notice what naturally motivates the learner in different contexts.
• Use EOs strategically. Plan teaching moments when motivation is naturally high.
• Avoid teaching during AOs. Don’t expect strong responses when the reinforcement value is low.
• Pair reinforcers carefully. Combine natural EOs with meaningful reinforcement.
• Track motivation patterns. Record how energy, attention, or preferences shift across sessions.

For more guidance, check our Path4ABA Resources, including study tools that help you connect theory to practice.

Motivation Is the Spark

Motivating operations remind us that behavior doesn’t come out of nowhere. It’s not just about willpower or personality; it’s about the conditions that make actions valuable in the first place.

Motivation doesn’t cause behavior. It creates the spark that makes behavior possible.

By recognizing what comes before behavior — hunger, interest, deprivation, attention — we can design better environments for learning and growth.

And that’s the real magic of ABA: understanding not just what behavior looks like, but why it happens.

In ABA, motivation always comes first.