Among the following designs,which allows researchers to rule out the most threats to internal validity?
A)times series design with nonequivalent control group
B)one group pretest-posttest design
C)simple interrupted time series design
D)nonequivalent control group design

Question

Quizplus · Accepted Answer

A time series design with a nonequivalent control group allows researchers to compare changes over time in both the treatment and control groups, helping to rule out many threats to internal validity such as history, maturation, and testing effects.

Among the Following Designs,which Allows Researchers to Rule Out the Most