I'm somewhere in the middle I think. I do agree that a part-timer takes so much longer to transition and it can be difficult no matter what the age. I usually have children start with me at about age 10-11 months and I hold them a lot in the first few months for bonding purposes.

Once a child reaches 1 year of age I want them to learn quickly that they will only be picked up when they are in need and not just because they are crying for no reason at all. I always ask the parents to do that at home too. At naptime I sing to them, rub their backs, but make it clear that they must learn to lay down and rest for the entire quiet time. I haven't had a difficult time with naptime really, thank goodness. But I have had children cry and scream for many months for no reason instead of happily playing with the others.