We're waiting for our 4 year old DS to be assessed for behavioural problems. We're strongly of the opinion that he has Oppositional Defiant Disorder. I've read a book about coping with defiant children and am very clear on the message that standard parenting techniques (eg. timeout) don't work for defiant children. However, I'm just not clear what does! Does anyone have any experience / advice to offer on coping with hitting / spitting / biting etc. which really are beyond the level of calm negotiation and compromise. Frankly, I can?t stand the physical abuse any longer.