ABA or reversal designs
Nonequivalent control group design
Post hoc research
Quasi-experimental research
Single-subject research design
Static group comparison design

2. Review the threats to internal and external validity discussed in chapter 11, and try to determine whether and how each threat might apply to the methods explained in this chapter.

3. Try to understand how each example used to illustrate a type of qualitative research meets the definition of that type of research.

4. Using a search engine of your choice, find a web page about some area of psychology. Try to determine whether any of the methods discussed in this chapter would be appropriate to explore this area of psychology.

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