On completion of this chapter, you will be prepared to:

1. Define experimental research
2. Discuss internal and external validity of experimental designs
3. Identify six threats to internal validity
4. Identify three threats to external validity
5. Distinguish among true experimental, quasi-experimental, and pre-experimental designs
6. Discuss three true experimental designs
7. Discuss two quasi-experimental designs
8. Discuss two pre-experimental designs
9. Discuss four types of nonexperimental research designs
10. Describe two types of settings in which research is conducted
11. Critique the design section of quantitative studies