Of the many sources of differences of scores, the researcher is especially interested in isolating the differences due to
A) situational factors.
B) variations in administration.
C) mechanical factors.
D) true differences in the characteristic.
E) the sampling of items.

Question

Quizplus · Accepted Answer

The researcher is interested in isolating the true differences in the characteristic being measured, as this reflects the actual variance in the trait or ability of interest, rather than extraneous factors.

Of the Many Sources of Differences of Scores, the Researcher