The one-group pretest-posttest design is an example of what type of design?
a. Comparative
b. Descriptive
c. Experimental
d. Quasi-experimental
ANS: D
Quasi-experimental study designs were developed to control as many threats to validity as possible in a situation in which some of the components of true experimental design are lacking.
A comparative design needs two groups.
A descriptive design explores the nature of the phenomena of interest.
An experimental design requires a control group.
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