Which study design uses more than one test period prior to initiating any treatment and uses a comparison between one subject who receives a treatment and one who does not?
A) single subject design
B) nonequivalent control group design
C) multiple baseline design
D) cross-sectional design

Question

Quizplus · Accepted Answer

The description matches the definition of a multiple baseline design, which involves observing the same behavior across multiple settings and/or time periods before introducing a treatment for only one subject while keeping the others as controls for comparison. This allows for a stronger evaluation of the effectiveness of the treatment by ruling out alternative explanations of the observed changes. The other choices do not fit the given description.

Which Study Design Uses More Than One Test Period Prior