Ours are younger (30mo, 11mo), and we can see the developmental loss pretty clearly at this point in the older, and the younger likes people more than toys, and has from the moment he could move on his own. He goes to grandparents, aunts, uncles, whatever and whoever immediately. Every human is "New best Friend", even the electrician. Its been really sad for us because i feel like we are depriving him. For the older one - shes bored of *everything* and hasn't had any genuine stimuli outside the confines of the house, except one time we visited relatives. It was like a new kid for about 5 days. So we haven't decided what to do, but i don't think i can do this to my children for the next few years and look myself in the mirror.