You bring up an interesting point. If a baby is dropped off for 8+ hours at a daycare at 6-8 weeks then I could imagine that they are not getting enough stimulation and there are going to be problems in mental/social development. I had a good friend who managed a daycare and even though they did their best to interact with each child it was basically all they could do to make sure they were fed, changed and not being mauled by the other kids. No time for individual care and nuturing. We have millions of newborns being warehoused for most of their waking hours.
I would think that nothing equals the bonding of a child with it’s biological mom. Just as pheromones AFFECT THE BEHAVIOR of humans so too would similar phenomena occur between a child and it’s mother. Lack of bonding time between babies and their moms MUST have it’s consequences, perhaps AUTISM. I’m not even sure it’s really about “quality time”.. That’s a politically-correct term or scapegoat to justify career women not spending ENOUGH time with their young ones!