A research study in a laboratory setting incorporates four groups (two control and two experimental) in which only one experimental group and one control group are pretested, while all four groups are posttested. Which descriptions of the design are accurate?(Select all that apply.)
a. Experimental design
b. After-only experimental design
c. Real-world experimental design
d. Quasi-experimental design
e. Solomon four-group design

a. Experimental design

e. Solomon four-group design

Explanation:

The study shown in the question above is an example of experimental design. Experimental design is the term used to describe a study that wishes to describe some divergence of information over a period of time, or wishes to describe and explain a situation based on observations of data over a period of time.

There are a few different types of experimental design, which is being presented in the question above is a Solomon four-group design, which is a method of scientific research where treatments and control groups are separated into four different groups, which will be evaluated in periods different time periods, to avoid that all treatments show results affected by the pre-test of the experiment.

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