We all know what positive reinforcement is: Something you give to someone to increase behavior you want. You give it following the behavior and, if done with skill and intelligence, it will lead to more of the same. For example, you tell the woman you’re out with, “You’re so pretty,” just after she accepted another date with you and you can be fairly certain that, barring anything stupid you do, you’ll get still another date out of the deal in the future. That’s positive reinforcement.