A Group of Physicians Tests a New Drug for Treating

Multiple Choice

A group of physicians tests a new drug for treating Attention Deficit Disorder (ADD) . They measure the amount of time a group of ADD students attend to a task during a specified hour one week prior to taking the new drug and for a specified hour one week after taking the new drug. The physicians used what type of design to test the drug?

A) One-group posttest-only design
B) One-group pretest-posttest design
C) Posttest-only design with nonequivalent groups
D) Nonequivalent posttest-only design