Question: There are many programs that seek to change behavior. One way to assess the effect of a program is to give a pretest, administer the
There are many programs that seek to change behavior. One way to assess the effect of a program is to give a pretest, administer the program, and give a posttest. To really prove the lasting value of the program, however, a researcher must gather follow-up data some months later to see if the improvement seen at posttest has continued. In the scores below, larger numbers represent improved performance. Analyze the data in SPSS.
Pretest Posttest One-year follow-up
Subject 1 9 23 18
Subject 2 13 27 24
Subject 3 17 36 26
Subject 4 18 31 20
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