An observed score is comprised of the
A)true score + measurement error (method error + trait error).
B)true score + method error only.
C)true score + trait error only.
D)measurement error (method error + trait error).

Question

Quizplus · Accepted Answer

An observed score is the sum of the true score (the score a participant would get if there were no error in the measurement process) and measurement error (which is comprised of method error and trait error). Therefore, the best choice is A. Choice B and C are incorrect because they do not account for all sources of error in the measurement process, and choice D only includes measurement error, excluding the true score.

An Observed Score Is Comprised of the