Most psychologists would advise parents who want to change a child's bad behavior to make greater use of

reinforcement than of punishment

Explanation:

Parents sometimes rush to "punishment" when thinking about the consequences of children's actions. When parents use negative reinforcement for the behavior of their child they tend to reduce or remove the negative outcome. On the other hand, punishment induces a negative outcome in an attempt to reduce the behavior. Psychologists advise parents to better understand their children by listening, compassion, and corporation.