Functional analysis of stereotypical ear covering in a child with autism.

One child with autism kept covering his ears. The team wanted to know why.

They ran a short analogue functional analysis. Sessions were quiet, then another child screamed. Ear covering only happened after screams.

The test showed the behavior was not about escape or attention. It was about the sound itself.

Ear covering was a simple sensory response. The scream was the trigger.

No screams, no covering. The function was auditory avoidance.

Schwartz et al. (2020) later found that many minimally verbal youth with autism cover their ears. Those who do also score lower on receptive language tests. Jung-Chang et al. gave the first clear test for why it starts.

Cerutti et al. (2004) used the same single-case design to show body rocking can be kept going by visual feedback. Together the two papers prove analogue FA works for any sensory channel.

Takahashi et al. (2016) showed autistic kids jump more when soft sounds pop up. Jung-Chang et al. turn that lab reflex into a real-world scream trigger.

If a learner covers ears, do not guess sensory overload. Run a five-minute test with and without the suspected sound. Once the trigger is clear, you can remove it, fade it, or teach a replacement like asking for headphones. Quick test, quick answer, better plan.