We wish to test the hypothesis that music improves learning. Random assignment into two groups, one that listens to music and one that studies in silence, controls for
A)the students' inherent academic ability.
B)the students' use of different study strategies.
C)the amount of sleep students had prior to the experiment.
D)all of these.

Question

Quizplus · Accepted Answer

Random assignment into two groups helps to control for all of these factors (students' inherent academic ability, their use of different study strategies, and the amount of sleep students had prior to the experiment) by ensuring that each of these variables is equally distributed across both groups, thereby isolating the effect of music on learning.

We Wish to Test the Hypothesis That Music Improves Learning