Final answer:
Fisher's approach to problem behavior includes a functional analysis followed by strategies such as functional communication training to teach alternatives to problem behaviors, token economies to reinforce desired behaviors, and variable reinforcement schedules to maintain high rates of responding.
Step-by-step explanation:
Fisher's approach to problem behavior involves conducting a functional analysis to identify why the behavior is occurring. Once the function of the behavior is understood, the approach is to introduce strategies to modify it. One such strategy is functional communication training (FCT), which is designed to teach an alternative communication method that serves the same purpose as the problem behavior. In contrast, token economies and variable reinforcement schedules are two different methods used to modify behavior.
A token economy is a behavioral management system in which desirable behaviors are reinforced with tokens that can be exchanged for rewards, effectively increasing appropriate behaviors. On the other hand, a variable reinforcement schedule is a type of partial reinforcement where rewards are given after an unpredictable number of responses or time intervals, promoting a steady and high rate of responding due to its unpredictable nature.