Adesign can be used in situations in which a pretest is desirable but there is concern over the possible impact of taking the pretest.

Solomon Four-Group

Explanation:

According to my research on different research methods, I can say that based on the information provided within the question the design being described here is called the Solomon Four-Group. This is a method that is used when there are any concerns that the treatment might be changed based on the pre-test.

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answer; soren kieregaard was a 19th century danish philosopher;