After reading this chapter, students should be able to:

1. Identify the best way to determine if a policy or program reduces delinquency.

2. Identify the essential components of a randomized experiment.

3. Explain why it is important to randomly assign individuals to treatment and control groups.

4. Describe the major problems that researchers may encounter when they try to implement randomized experiments in the real world.

5. Describe two forms of nonrandomized experiments.

6. Explain why programs designed to reduce delinquency may be ineffective.

7. Indicate the purpose of implementation or process evaluations.

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