The token economy is a highly effective way to exemplify rewards in a classroom. Token economy was proposed by the well renowned Psychologist, B.F. Skinner. According to Skinner, "This is used primarily in institutions such as psychiatric hospitals, juvenile halls, and prisons. Certain rules are made explicit in the institution, and behaving yourself appropriately is rewarded with tokens -- poker chips, tickets, funny money, recorded notes, etc. Certain poor behavior is also often followed by a withdrawal of these tokens. The tokens can be traded in for desirable things such as candy, cigarettes, games, movies, time out of the institution, and so on. This has been found to be very effective in maintaining order in these often difficult institutions." Although Skinner's way of token economy was used in psychiatric hospitals, it can also be used in the classroom as well to be a positive reinforcement for students who behave well in class. This can also help students learn how to be responsible with money and they can learn how to speak English when buying something in the real world.