I've often had this discussion with the girls and there are varying opinions. In my case my eldest went to nursery from 3 months part time with regular grandma interaction my second went at 3 months full time and my youngest went when he was approx 8 months old part time. Out of the 3 I have noticed that my youngest is the most confident of all, the other 2 are happy with their own space and very shy when meeting new people. I can't help thinking this may have something to do with the fact they went to nursey too early. If I could do it all again and had the finances to support my decision I think I'd stay at home for the 1st year. If there is anything I could advise new mothers it would be to enjoy every second, they are so precious and you never get them back!