What Is a Within-Subjects Design?
It is also known as a repeated measures design. The term “treatment” describes the differentlevels of the independent variable, the variable that the experimenter controls. In other words, all of the subjects in the study are treated with the critical variable in question. Science Photo Library / Brand X Pictures / Getty Images At a Glance A within-subject design involves having all participants exposed to the exact same treatments. It can be a helpful way for researchers to learn more about how changes happen over time....