How old is your son? Does he understand numbers, specifically the sequence of 1-5 and the idea that 2 is more than 1 but less than 3, etc?
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My son (age 6 with ASD)Â has volume issues too, We have had a lot of success using the Incredible 5 Point Scale method with him. The first scale we ever set up for him was "DS's Voice Scale" and his goes like this:
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5 Â Screaming: Emergencies Only
4Â Â Loud Voice: Playgroud, Recess, Park
3Â Talking Voice: Home, Store
2 Â Whisper: Library, Church
1Â No Talking: Quiet Time, Somebody Else is Talking
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We have these printed up in various sizes: pocket size for DH and I to carry, larger size to hang on the walls at home, medium size for his teachers to use at school. It took a while for DS to get it, but after we practiced a bit, it "clicked" for him. Currently, when DS gets too loud, I will tell him something like, "We are indoors. Use your Number 3 Voice, please," and DS will adjust his volume. DS is also learning to recognize his currentl volume and whether or not it matches the situation. I will ask him, "What number voice are you using? Where are we? What number voice should you be using?" Through this method, DS is learning to regulate his own volume.
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It's not a quick fix; it's a learning process. But we are having a lot of success with it at home, at school, and out in the community.
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http://www.5pointscale.com/Â
http://www.amazon.com/Incredible-Assisting-Understanding-Interactions-Controlling/dp/1931282528
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