My previously angelic little boy has become a very stroppy 7 year old, who often refuses to co-operate with the most simple request and picks arguments and just seems to have a negative attitude a lot of the time. I try really hard to be patient and reason with him but his unreasonable behavour stretches us to the limit. We (my husband is ds' stepdad)also have a 20 month old daughter. I don't know if ds feels a little jealous of dh or dd, or if their is some other reason or if it's a 'normal' 7 year old thing. Does anyone else have similar experiences? or advice?