ABSTRACT
A hungry lion returns to the waterhole, where it has successfully ambushed antelope and other prey. A person who plays a slot machine and wins a large jackpot is more likely to play again than a person who does not win. Students who ask questions and are told “That is an interesting point worth discussing,” are prone to ask more questions. When a professor ignores questions or gives fuzzy answers, students eventually stop asking questions. In these cases (and many others), the consequences that follow behavior determine whether it will be repeated in the future.
