Dr. Simpson's students were rightfully upset when he used very accurate weight scales (assessing the poundage of each pupil) to determine their grades in a developmental psychology class because his method of assessment lacked
A) sufficient sample size.
B) reliability.
C) validity.
D) the ability to identify practice effects.

Question

Quizplus · Accepted Answer

The method of using weight scales to determine grades lacks validity because weight has no direct relation to the knowledge or performance in developmental psychology.

Dr Simpson's Students Were Rightfully Upset When He Used Very