Reducing Vocal Stimming and Scripting in Children with Autism

A common question I get is how to teach a child with autism how to stop vocal stimming. When a child needs to be quiet during certain activities, vocal stimming or scripting can be disruptive.

What is Stimming?

Have you ever been to a lecture where the material is way too easy? Or maybe you’ve been to one that’s gone completely over your head? What do you do? Perhaps you doodle, play with your hair, or scroll through your Facebook newsfeed on your phone. This is the equivalent of people with autism engaging in self-stimulatory behavior (otherwise known as “vocal stimming”).

We all stim. In fact, our solitary leisure activities are actually stimming. For example, stimming behaviors include shooting hoops, playing the violin, or watching reality TV. These repetitive behaviors keep the neurons in our brain firing while we are not meaningfully engaged with others or working on a task where we need to concentrate.

Autism Stimming

Since children with autism spectrum disorder usually have poor language, social skills, and are sensitive to sensory input, some kids with autism engage in stim behavior for long periods each day. These stim behaviors are often very disruptive across a variety of settings.

Stimming can take very different forms. Some kids might engage in stimming by rocking their bodies, hand flapping, or by making loud vocalizations. Kids with higher language abilities might script lines from movies, build the same Lego structures over and over, or watch the same YouTube clips for hours.

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Dangerous Stimming

Some stims, such as head banging or eye-poking, can be dangerous or even life-threatening. I started with a 2-year-old client several years ago that banged his head repetitively on hard surfaces for 3 or more hours per day and it was difficult to stop him. It caused an open wound on his head. With proper ABA/VB intervention and with regular supervision and oversight by me as the BCBA, we were able to get this young boy’s head banging down to under 5 minutes a day and his head wound eventually healed.

Replacing Harmful Behaviors with Functional Behaviors

As both a BCBA-D and a mom of a son with autism, you might be surprised to learn that unless a stim behavior is dangerous, I almost never work on decreasing minor stim behavior directly.

Instead of focusing on decreasing the stimming (rocking, moaning, scripting, etc.), I work on improving language and learning skills and eventually replacing very odd and immature stim behaviors with more socially appropriate leisure activities.

Vocal Stimming

I also suggest that if there are activities that verbal stimming (also known as vocal stimming) is high and disruptive, to stop the activities or add additional supports so the child can be more appropriately engaged. This could be a church service, inclusion math class, or some other activity that takes up some time.

The key to stopping a stim behavior is not to focus solely on stopping one behavior. Instead, work towards reducing stimming and replacing the behavior with something functional and equally valuable.

For more information on how to reduce stimming, download my cheat sheet with 6 Steps to Reduce Minor Self-Stim Behavior in Children with Autism.

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    1. Thanks for your comment. Check out all my video blogs at My goal is to keep them under 10 minutes so people can watch them on the go! For more in depth info, check out my books, written blogs, published articles and my online courses.

  2. Hi, I was researching on stimming because my son, who is 4,5 years old and at the top of the VBMAPP, is showing a big increase of stimming behaviors and scripting from movies.
    He is in a self-contained classroom with peers that are high-functioning but there are a lot of stims. Could the environment be playing a role ? he had minimal stims before and now he vocalizes non-functional language. I have a feeling that this setting doesnt stimulate him enough and might be bored or uninterested, and he ‘s copying what he sees around. His language is at age level. Could this habit be a regression? Thanks so much for sharing your advice!

    1. Hi Gina, Your son could be copying from his peers but whenever there are problem behaviors (like stimming), I believe it’s either a medical issue or the demands are too high/reinforcement is too low.

      1. Thanks for your feedback Mary. I realized he is not stimming while he’s doing ABA, he specially does it during unstructured time or when he’s on his own (during a car ride for example), so there isn’t specific demands placed on him. Any other idea of what could be triggering this? Self-regulation? He doesn’t show any specific sensory disfunction, should we investigate any hidden disregulation? Thanks so much

        1. Sorry but for ethical and legal reasons, I can’t give you specific feedback about your son. You can consider joining my online course to learn more and be able to ask questions within our closed Facebook community.

  3. Hello!

    I’m a junior behaviour therapist and I’ve got a 23 year old client who is will say quotes from movies but it seems that these quotes is his way of communicating to us and to himself. For example, he did something wrong and he was feeling sorry, and he said “I’m sorry, Frankie” which is a quote from Sharktale movie. I’ve tried redirecting to functional language and modelling but he would revert back to quoting (to himself). He can read fine and I’m currently working on expanding his language comprehension. Any thoughts as to what I can do to redirect his quoting to something more functional?


    1. Sorry but for ethical and legal reasons, I can’t give you specific feedback about your client. You can consider joining my online course to learn more and be able to ask questions within our closed Facebook community.

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