Someone mentioned PAS Syndrome, so I looked it up to see what it is.
This is the definition of PAS as described by R.A. Gardner who discovered the syndrome and has become an expert in dealing with the issue.Gardner's definition of PAS is:
"The parental alienation syndrome (PAS) is a disorder that arises primarily in the context of child-custody disputes. Its primary manifestation is the child's campaign of denigration against a parent, a campaign that has no justification. It results from the combination of a programming (brainwashing) parent's indoctrinations and the child's own contributions to the vilification of the target parent."(Excerpted from: Gardner, R.A. (1998). The Parental Alienation Syndrome, Second Edition, Cresskill, NJ: Creative Therapeutics, Inc.)
Basically, this means that through verbal and non verbal thoughts, actions and mannerisms, a child is emotionally abused (brainwashed) into thinking the other parent is the enemy. This ranges from bad mouthing the other parent infront of the children, to withholding visits, to pre-arranging the activities for the children while visiting with the other parent.
I don't know very much about it, but this is what my mom used to do with my dad. It really is sad how children get in the middle.