Consistency is one of the many tools that parents need to carry in their tool box. Children need a structured and safe environment to grow in. Having parents who are consistent with rules, rewards and punishments helps to instill desired behavior in children. When children learn to predict a behavior has a consequence and this consequence is ALWAYS enforced, the child will grasp the idea that consequences do exist as a result of my behavior.
It becomes confusing to children when mommy and daddy are both enforcing different rules or have a separate set of punishments all together. This confusion in children can cause an uproar of protest and rebellion may follow. As parents we have the responsibility to sit with each other and agree on a consistent parenting method for the benefit of our children. If a child can feel safe and predict outcomes in his/her environment it will reduce unwanted behavior; increase self esteem and responsibility.