In the field as a whole, applied behavior analysis (ABA) is focused on measuring and influencing observable behaviors or observable events. These behaviors are ones that we and others can see, hear, and/or feel. There are a number of reasons that these behaviors are the primary focus of intervention. They are easier to measure, they are what insurance want to see move, and they are often the ones that are causing the most trouble for our stakeholders. For example, parents want to see their children stop hitting. Teachers want to see their students sit at their desks. Bosses want to see their employees produce more product. But there is something that these children, students, employees, you, and me all have in common that is often missed in the field of ABA. We, as humans, are more than just what can be seen by others.  

Ready to ACT? Incorporating Acceptance and Commitment Training  into Your Clinical Practice

Private Events

In addition to behaviors that are observed by others in the environment, there are behaviors occurring that others cannot see, hear, and/or feel. Behaviors that are only observable by the person experiencing them are often called private events. Private events include behaviors such as thoughts, physical sensations (e.g., heart racing, stiff muscles), and internal physiological changes (e.g., pain, temperature). There is a complex relationship between private and observable events that is often missed, and if not considered, can lead to an incomplete analysis of behavior. And even worse, a life of more aversive control than appetitive access. 


As a behavior analyst, how often do you think about and incorporate private events in your conceptualizations? As mentioned above, there are good reasons why observable behaviors are top priority. However, under the philosophy of radical behaviorism, private events are behaviors, just like any other behaviors. They are influenced by the environment and work under the same principles as any other observable behaviors. So, how do you begin incorporating them into your analysis of behavior? I think the first step to considering private events in our analyses for our clients is to first consider private events in the analyses of our own behavior.

The Analysis of a Thought

When you are analyzing your own behavior, your private events are observable to the analyst (that’s you!). If it helps, you can think about your private events as if it is coming from a client or learner as an observable event. Stay with me, I know this is getting a bit conceptual, so let’s walk it out. For simplicity, we will use the specific private event of a thought. Pick a particular thought that has been bugging you. Some examples may be:

I’m not good enough

I’m not smart enough

There are others better than me 

I can't help

I can't do this

Once a specific target behavior (thought) is identified, the next step in our analysis is usually to figure out under what conditions that behavior occurs (i.e., Why is it happening? What is the function?). To do this, we identify the antecedents and consequences to that target behavior. Or, more technically, we do a simple functional behavior assessment (FBA). Some questions you might ask are:

  • What was happening when the thought occurred?
  • Where were you when the thought occurred?
  • Who was there when the thought occurred?
  • What happened after that thought occurred?
  • What did you do after that thought occurred?

It’s important to remember that these questions are not just asking about the external “observable” environment, but also the internal environment as well. This includes physical sensations like hunger, pain, shortness of breath, blurry vision and emotions like scared, anxious, worried. So, a piece of your FBA may look something like this:

Antecedents: In classroom with learner. Learner stands up and throws chair and begins to scream. Staff looks at me. My heart races and I feel like I can’t breathe
Target Behavior: “I can’t do this!”
Consequence: Call in coworker or supervisor to take over. Have more thoughts – “I should quit” “I’m not cut out for this”. Feel nauseous. Take a break/leave the classroom. Schedule meeting to ask for classroom transfer. But at least I can breathe again and my heart rate is back to normal.

If this is the pattern, then that thought served as part of an escape function. When your mind (or “inner learner/client”) screamed, “I CAN’T DO THIS!” you worked really hard to get them out of that situation. To go further, the thought is coming with aversive sensations and emotions before and after it, so it is not surprising that you’d want to make it go away.  

What Now? 

Now we ask the questions that any good behavior analyst would ask: 


  • How is this working out for you? 
  • Is this pattern in line with things that you care about? 
  • Do you want this to change? 


If the honest answer is that this is not causing any significant problems, then there is no need to intervene! But this target behavior was picked for a reason, so I’m going to work under the assumption that this pattern is not really something we want to continue. Let’s assume that you really care about your learners, even the ones that throw chairs. You want to be able to help them in their distress and you want their interventions to be meaningful. 


Remember, we are thinking of this thought as if it is coming from a learner or client. What would you do for them now? 

Some antecedent strategies may be: 

  • Noticing precursors (heart racing, can’t breathe, the Learner’s precursors to more escalated behaviors) 
  • Practicing steadying breaths and calming 
  • Asking coworkers to let you know if you are looking flustered

Some consequence strategies may be: 

  • Acknowledging that the thought is occurring because you are scared/anxious 
    • You are only scared/anxious because this work matters to you. If the work didn’t matter, the thought wouldn’t matter 
    • Check out the Tarbox et al. (2023) article on Kind Extinction 
  • Call in a coworker or supervisor to support 
  • Notice the other thoughts that are coming while also noticing the learner is in distress 
  • Continue with calming strategies 
  • Debrief with colleagues

And when your thoughts get louder or more intense or your sensations get stronger (i.e., you have an extinction burst), go back to the Tarbox et al. (2023) article on Kind Extinction and remember this is part of the process. It means your intervention is working! 

Thoughts Are Not the Target Behavior for Intervention 

Now the thing with private event interventions is that the primary goal is not to reduce the frequency of the thought. The thought itself is not hurting anyone or anything. It is the responses to these thoughts that often get us in trouble and move us away from the things we care about and/or the life we want to live. The thought is the precursor behavior to the actual target behavior, which is often escape or avoidance. But by going through the analysis of the private event, we can make it more likely that the escape or avoidance will decrease and behaviors that are more valuable will increase. It is those behaviors that will bring us closer to our values and goals, leading to richer and more meaningful experiences. 


This is not a call to begin to do this with your clients or learners. Rather, it is a call to consider how your private events are affecting your work and to consider that your clients and learners may have similar experiences. After all, we all have one thing in common: we are human. 


Does all of this seem familiar? Welcome to the (nerdy) behavior analytic side of Acceptance and Commitment Therapy (ACT). It is my hope that this behavior analytic conceptualization of private events will enhance trainings in ACT including walking through the ACT Matrix. 

ACT weaves mindfulness and acceptance tactics with committed action

that can help facilitate more effective and meaningful interactions with both your staff and clients. But how do you know if you are prepared for ACT, and what are the best strategies for adding it to your toolkit? 

Check out this webinar: Ready to ACT? Incorporating Acceptance and Commitment Training into Your Clinical Practice 


Emmie Hebert, PhD, BCBA-D
Licensed Clinical Psychologist

Dr. Emmie Hebert is a licensed clinical psychologist (PhD) and board-certified behavior analyst at the doctoral level (BCBA-D) in the Denver, Colorado area. Her work consists of developmental evaluations and supporting young learners participating in applied behavior analysis (ABA) services. She primarily provides telehealth evaluation and support services for families in Colorado and New Mexico. She received her Bachelor of Arts degree in psychology from the University of Louisiana at Lafayette and Master of Science and Doctoral degrees in clinical psychology from the University of Mississippi. Dr. Hebert was fortunate to complete an APA-accredited internship at the Munroe-Meyer Institute in Omaha, Nebraska in the Behavioral Pediatrics Department. Her specialties include using behavioral psychology perspectives and Acceptance and Commitment Therapy with individuals with neurological differences. She is grateful for the amazing mentors and trainers that she has had over the years, which has afforded her to serve not only these amazing individuals, but also their families and support systems. Dr. Hebert currently lives just outside of Denver with her wife and her dog, Crouton.


Tarbox, C., Tarbox, J., Lanagan, T., Silverman, E., & Servellon, L. (2023). Kind Extinction: A Procedural Variation on Traditional Extinction. Behavior Analysis in Practice. 10.1007/s40617-023-00833-w.