Hello, I'm new to the site. My son is in preschool and has recently been recommended to be screened for hearing comprehension and attention. At school he's a bar or two behind the class when singing, and often doesn't respond to instruction. I know his hearing is fine, and he's been speaking clearly since he could walk (around 12 months). I'm thankful that this is the only behavior the teacher sees. At home he is a terror to both my husband and I. He blatantly ignores direction, breaks out in terrible tantrums, abuses our pet cat, is very rambunctious and destructive, uses name calling a profanity when angry, destroys toys and other items around the house. When told not to do something because it is unsafe, he does it just to defy us. He is a loving and happy boy when he is doing what he wants, but try and get him to do something, or set limits on him, and he changes into a different kid. This is putting severe stresses on our marriage and family life. I need to start acting now. We are going for the screening on Jan. 7th, but I need advice sooner. I think he shows signs of Opposisional Defiance Disorder. Please let me know if there's anything I can start doing at home. Thank you!