After reading this chapter, you should be able to:
1 Identify three categories of research design: experimental, quasi-experimental, and nonexperimental.
2 Explain how a gradient of control can be used to understand research design.
3 Define and explain internal and external validity.
4 Describe three elements of control required in an experiment.
5 Distinguish between a laboratory experiment and a field
experiment.
6 Describe factors that threaten
the internal validity of a research study.
7 Describe factors that threaten
the external validity of a research study.
8 Define and explain mundane and experimental realism.