True experiments utilize comparison groups because they help reduce which of the following threats to internal validity?
A)testing
B)instrumentation
C)maturation
D)all of these

Question

Quizplus · Accepted Answer

Comparison groups are used in experiments to control for a variety of threats to internal validity, including testing (because participants in the comparison group are also tested at the same intervals as the experimental group), instrumentation (because both groups are assessed using the same measures), and maturation (because both groups are subject to similar environmental conditions). Therefore, the correct answer is D - all of these threats are reduced by the use of comparison groups in true experiments.

True Experiments Utilize Comparison Groups Because They Help Reduce Which