By averaging the responses of many participants, researchers who use group designs
A)hope idiosyncratic sources of error variance will cancel out.
B)eliminate threats to internal validity.
C)can determine how most of the participants responded.
D)can replicate the effect of the independent variable across participants.

Question

Quizplus · Accepted Answer

Averaging responses in group designs is primarily aimed at reducing the impact of random, idiosyncratic errors by assuming they will cancel out across the large number of participants, thereby providing a clearer view of the effect being studied.

By Averaging the Responses of Many Participants, Researchers Who Use