Hello,
I'm just interested in what your 3/4 (preschool) aged children are like around other children?
We've been to several parties recently with friends from nursery where I've noticed that my child doesn't really interact with the other children. She is generally quite shy but she also doesn't really seem interested. Would this concern you? If you didn't know, you wouldn't have thought she knew any of the other kids!
I'm not sure if by this age you would expect more elaborate games with others like role play etc, whereas she is quite happy just playing by herself.