The reinforcement theory of motivation was proposed by B.F. Skinner and states that an individual's behavior is determined by the consequences of that behavior. It is based on the law of effect, where behaviors followed by positive consequences will be repeated and behaviors followed by negative consequences will not be repeated. Managers can use positive reinforcement like praise, negative reinforcement like removing undesirable tasks, punishment, or extinction without reinforcement to control employee behavior. However, the theory has been criticized for ignoring inner feelings and motivations and solely focusing on external environmental factors influencing behavior.