The recent arrest of Adrian Peterson has re-ignited a national debate around physical punishment as a form of discipline. But is it even effective?

Jessica Glass-Kendorski, a psychologist at Philadelphia College of Osteopathic Medicine, says no, and can cite study after study that illustrates it is not. Essentially, she says, once the threat of physical harm goes away, the bad behavior returns.

Dr. Kendorski can discuss in detail why physical punishment is not an effective form of discipline, how it can affect children negatively into adulthood, and tips for parents to encourage appropriate behavior in their children.