We wish to test the hypothesis that music improves learning.We compare test scores of students who study to music with those who study in silence.Which of the following is an extraneous variable in this experiment?
A)the presence or absence of music
B)the students' test scores
C)the amount of time allowed for the studying
D)silence

Question

Quizplus · Accepted Answer

The amount of time allowed for studying could affect the outcome of test scores and is therefore an extraneous variable. The presence or absence of music, silence, and the students' test scores are all parts of the experiment's design and are not extraneous variables.

We Wish to Test the Hypothesis That Music Improves Learning