Dr Toris Wants to Test an Incentive Program to Increase

Multiple Choice

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