Dr. Toris wants to test an incentive program to increase attendance in her classes. For the first 8 weeks of the semester she does not use the program, and records attendance rates each week.
Then she institutes the incentive program for the last 8 weeks and continues to record attendance rate each week. She detects an increase in attendance over the last 8 weeks. This is an example of which experimental design?
a. one group pretest-posttest
b. interrupted time series
c. non-equivalent control group
d. multiple baseline
Question 2
What is the purpose of blinding the experimenter to the condition(s) his or her participants are experiencing?
a. knowledge of these conditions invalidates the experiment
b. it makes the IV stronger
c. if the experimenter knows this information, it will affect the way he or she interprets the data once they are analyzed
d. knowing this information may cause the experimenter to behave differently toward participants in the different conditions
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