You believe that children's responsiveness can be increased by exposure to moving stimuli during the first week following birth. In one hospital you convince the staff to hang mobiles over the cribs and in another they do not. In each hospital you measure each child's responsiveness before and after the one week exposure to the mobiles. You have used what design?
A) a nonexperimental design
B) an interrupted time-series design
C) a one-group pretest-posttest design
D) a nonequivalent control group design with pretest and posttest
Question 2
You observe a single group each month for five months and then introduce some new treatment and then observe the group each month for five more months to see if their behavior has changed. You have employed a(n) ____ design.
A) interrupted time-series
B) proxy pretest
C) nonequivalent control group design with pretest and posttest
D) nonexperimental
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