It can be extremely confusing to children when parents don't present a unified front - especially in terms of discipline. In addition to causing uncertainty to the child it as well causes friction between parents since you can guarantee that children can and will find out how to work parents to get what they desire.....that is what children do!
Moreover, there are significant implications for children living in a household where parents often argue. Research has shown that children who are in conflict-ridden homes experience reduced school performance and rises in delinquency, behavior problems and depressive feelings (Boyd and Bee, 2008).
What advice would you give to a couple that has two distinct parenting styles?