Which scenario best exemplifies a token economy?

The scenario of a child collecting stickers for good behavior at home effectively exemplifies a token economy. A token economy is a behavioral modification system where individuals earn tokens or points for exhibiting desired behavior, which can later be exchanged for a reward or privilege. In this scenario, the stickers act as tokens that reinforce positive behavior. The child learns to associate good behavior with receiving stickers, motivating them to continue that behavior in hopes of gaining further rewards.

In contrast, the other scenarios do not demonstrate the key components of a token economy. The student studying for a test primarily focuses on intrinsic motivation for academic achievements, rather than a system of tokens and rewards. Similarly, receiving a bonus for completing tasks involves a direct monetary reward for specific accomplishments and does not incorporate a system of earning tokens over time. As for attending therapy, that is generally aimed at emotional support and personal development rather than a structured reward system for behavior. Therefore, the scenario involving the child and stickers aligns perfectly with the definition of a token economy.