My DS is 6 (siblings are DD8, DS3). He is extremely bright (in year 1 but doing year 4 maths etc) and generally a kind, gentle and well liked child. Lately we have been struggling with his behaviour at home (he is perfect at school and with his nanny of course). It seems to me he might be bored and acts up to get attention. Acting up is reasonably minor - whining, trying to irritate siblings, criticising how I've done things, protesting over every request etc. It is so out of character for him that I am quite perplexed. I have tried giving him lots of positive attention and focusing on the times it is just him and me. I have also tried withholding benefits. Any other ideas? Many thanks.