Mr. and Mrs. Harris believe in the importance of stern discipline, they impose strict rules which they expect their children to obey without question, and they penalize misbehavior harshly, frequently with a spanking. On the other hand, Mrs. Smith uses milder forms of reinforcement and punishment to enforce her rules and she has regular family meetings in which her (older) children help her to establish household rules and penalties for breaking them. Mr. and Mrs. Harris are using the child rearing style while Mrs. Smith is likely employing the model for helping her children develop.