DS4.9 plays well with age peers when it's physical activities but can't relate to them much with other play. He wants to go into too much detail and the other kids just stare at him not knowing what he's talking about. He usually tells me they don't understand him. He LOVES being around kids 3-4 years older. Always tells me how excited he was to play with them. I used to play with kids 2-3 years older all the time when I was his age and didn't find much in common with kids my age so I don't push him. He gets along well with everyone and loves being with other kids. But prefers older ones so they can actually "talk".