The trend in child custody court cases today seems to be recommending
alternating weeks with each parent. (One week with one parent, the
next week with the other parent, etc.) However, isn't there research
that shows children need to have a "base of operations" where they
feel grounded and secure and then venture to another setting from
their secure base? I seem to remember Abraham Lincoln saying, "a house
divided against itself will fall." Isn't that true with children also?
When they have a divided loyalty, the child also will fall Where can
I find research to suppor that view? Thank you!

http://www.aifs.gov.au/institute/pubs/fm2003/fm65/em.pdf