K.V.
My son is 6 years old & in K. Lack of respect for us & authority figures as well as for his peers has become an issue at school this year. On his part, it's more of rudely questioning or correcting authority. We, too, have tried many things & what has seemed to work for us at home & school(sounds like you may have already done this) is praising the postive. Any time he's caught being polite, respectful or kind to anyone, adults &/or peers, he immediately gets praise. At school, his teachers give him a star sticker he puts on his shirt which we instantly acknowledge & praise him for. We also keep these stars on a piece of paper at home for him to see. At home, for a while we offered the immediate praise for the above behaviors in the form of a star chart. Once he got a certain amount of stars he got a reward that we all agreed upon. Most recently, we started a goal for the week that we all came up with. For example, this week he was working on controlling his temper & being polite & repsectful. If he meets this goal at home & school then he receives the agreed upon reward. He usually choses a sleepover w/his best buddy or going to the movies w/myself or his dad w/o his little brother. So, it's usually an activity not a toy or something more tangible. What has also helped is at the recommendation of his teachers & the school counselor, he started going to therapy. I think it helps for him to discuss things w/someone who is an objective outsider. There have been times the therapist gives him the same ideas we have for coping w/problems, but it seems to have more of an impact coming from his therapist so he tries harder. I don't know how the parents feel about therapy but it has helped things for us. Hopefully, things will turn around for this little girl soon.