Whats the possibility cause? My nephew is just constantly mis-behaving, constantly argues with you, constantly distructive also. hes only 5 years old, the doctor wont test him for ADHD As hes not like it as much at school. Hes like a different person.

Speaking from a man with an 8 year old, kids learn early what they can and can't get away with and where. School most likely has a set routine that he has fallen into and knows if he pushes to hard fun thing disappear quickly. At home only you can answer to what happens when he is bad. In my case I had to show my son if I said something would be taken away it was. If I promised a goody for good behavior that I followed through with that goody. Now that he is 8 he has chilled out but needs a reminder from time to time when he acts out. So whats your end like? Is he threatened and then just forgotten about? Kids are smart they know the buttons to push (good and bad).

He needs caring discipline. Definitely not drugs, which is all you could get from a doctor.

it is quite simple. he is incharge. until you are willing to make his misery equal to his behavior it will get worse. I know you want him to be happy when ever you can make him happy, but when he misbehaves you have to make him miserable and he must learn that no amount of tantrum will escape that misery. the only thing that will let him get out of it is stopping his misbehavior. my almost 3 year old just started throwing fits about 4 months ago, so I started to human straight jacketing him. now we get less than 2 beligerent incidences per week (both this weeks happened today) and they are ending much quicker.

At home, He gets his tv taken away from him, sweets (only allow 1 a day) he gets sent to bed. Its like he forgets what will happen if he mis-behaves. Maybe some new tactics are in need, but he is the worse behaved out of the 7. It cant be attention seeking, he gets both parents attention more then anyone elses..

Sounds like oppositional-defiance. http://www.abct.org/sccap/?m=sPublic&fa=pub_Conduct_Opposit