 The phenomenon of parental alienation syndrome (PAS) and patterns indicating a dynamic of parental alienation by the abducting parent have been reported by the left-behind parents of children abducted to Brazil.Parental alienation is a phenomenon in which the abducted child displays an antipathy towards the other parent and in which this antipathy is actively encouraged by the abducting parent.In June 2010 it was reported that a constitutional amendment incorporating parental alienation syndrome into the Brazilian legal code would have a bearing on child custody cases.