Answer:
An example of Solomon four-group design
Explanation:
The Solomon four-group design is a research method developed by Richard Solomon in 1949. It is sometimes used in social science, psychology and medicine. It can be used if there are concerns that the treatment might be sensitized by the pre-test
It is also an experimental design that assesses the quality of pretest sensitization effects, that is, whether the mere act of taking a pretest influences scores on the following administrations of the test.
