[U6Q] When it is noisy, Scotty often bangs his head during i…
When it is noisy, Scotty often bangs his head during instruction, which results in staff members removing him from the noisy area. A new treatment protocol requires staff members to put noise-canceling headphones on Scotty before starting instruction. Scotty stops banging his head during instruction. The use of noise-cancelling headphones is an example of an: