I had never heard of ODD until just this past June 2016, when I was describing to a friend (who is a teacher) how unruly and defiant my three year old grandson is. She said, "It sounds like oppositional defiant disorder, is M (my daughter) a good mother?" I said yes and no. She has a terrible temper! Also, my grandson has a twin sister. She seems to be trying to compensate for his behavior by being overly solicitous at times. I have a son who is 29 and diagnosed with schizophrenia. My grandson is very attached to him, which is so interesting to me, but my son is another story. . .