I have a ds aged 5 and dd aged 2 - ds has always been quite hyperactive and never stops talking or asking questions which can be quite draining but he is usually very sweet and we have learnt to live with it - since he started school this term however he has gradually become really insolent, never obeys instructions and messes around all the time at the dinner table - if we tell him off he ignores us and if we try time out in his room he cries hysterically. there seems to be no way of getting through to him. he is ruining family life as we never get any "chill-out" time and is also having a bad influence on dd who is usually very good and laid-back but has now started acting up like him! Does anyone have any advice? BTW he behaves excellently at school and had a very good report!