A within-subjects design is an experiment in which the same group of subjects serves in more than one treatment. Note that I'm using the word "treatment" to refer to levels of the independent variable, rather than "group".
Similarly, it is asked, what is a two group design?
A two-group design is when a researcher divides his or her subjects into two groups and then compares the results. The two groups usually consist of a control group, who does not get the treatment, and a treatment or experimental group, who does get the treatment.
What is equivalent group design?
Because of that, sometimes researchers choose to do a matched-subjects design, or matched-group design, which is an experiment where the subjects are matched based on a particular variable and then put into groups. By matching subjects, the researcher is creating equivalent groups for their study.
What is a single group design?
In design of experiments, single-subject design or single-case research design is a research design most often used in applied fields of psychology, education, and human behavior in which the subject serves as his/her own control, rather than using another individual/group.