Answer:
A token economy
Explanation:
A token economy is a type of positive reinforcement. It is given to the students to improve their score in the study. It is also given to children to change their behavior. The token economy is a very famous reinforcement that is provided to the juvenile to change their behavior and they can behave in a desired manner. It is used to strengthen behavior and to increase its frequency.
Thus when Jim is placed in a juvenile home after running several times from home. In the juvenile home, Jim was providing a token economy so that he can change his behavior and can behave in a desired manner.