Which kind of research uses a non-manipulated participant variable such as age or gender to define the groups being compared?
A)time-series
B)differential
C)one-group pretest-posttest
D)pretest-posttest nonequivalent control group

Question

Quizplus · Accepted Answer

Differential research compares two or more pre-existing groups based on a non-manipulated participant variable such as age or gender. Time-series research involves measuring a variable repeatedly over time, one-group pretest-posttest research involves measuring a single group before and after an intervention, and pretest-posttest nonequivalent control group research involves comparing two groups that were not randomly assigned.

Which Kind of Research Uses a Non-Manipulated Participant Variable Such