I'm not sure what occurred with your first posting. In any case, I suggested that (in my opinion) 50/50 shared physical custody arrangements are often detrimental to young children because such arrangements, by their very nature, involve too many comings and goings, too many transitions. I believe young children are better served by arrangements that permit them to have a 'principle' home, where they go to bed and wake up in the same bed at least on every school day. I'm sure there are 50/50 arrangements that are working out just fine, but I almost always guide parents and courts away from them. One thing to keep in mind, though, regardless of what the time split is in a shared custody situation: the most salient feature for children whose parents are divorced is the stability of the post-divorce relationship between the parents. Longitudinal studies of families with divorce have illuminated this truth over and over.
Thank you for taking the time to do this for me again.