Justin Is Going Through His Own Personal Program of Endurance

Multiple Choice

Justin is going through his own personal program of endurance training. In the first two weeks, he rewards himself with a quarter every day if he runs a complete mile. In the next two weeks, he gives himself a quarter for every two consecutive miles run. Next, he gives himself a quarter for every three consecutive mile run and so on until he can run eight consecutive miles a day. This program is very much like which single-case research design?

A) A-B-A
B) Multiple-baseline
C) Changing-criterion
D) Interaction