that nowadays, hand dmnanioce is not definitive until 7 years of age. I couldn't believe what I was hearing. When I went back to work on Monday, I relayed this information to two of our new graduate O.T.Rs. They both informed me that was what they were taught. I also treat a child that uses both hands equally well during writing tasks. He will be going into kindergarten in September, and I worry for him, as you worry for your boy, too. I'm sorry I can't be of more help to you. If you find an answer to your problem, please email me with the solution. Thank you.