A test item functions differently in one group of testtakers as compared to another group of testtakers known to have the same level of an underlying trait.This phenomenon is known as:
A) dysfunctional item syndrome.
B) DIF.
C) DIF item difference.
D) DIF item incongruity.

Question

Quizplus · Accepted Answer

The phenomenon described is known as Differential Item Functioning (DIF). It occurs when a test item functions differently in one group of test-takers compared to another group of test-takers who have the same level of an underlying trait. Option A, C, and D are not accurate terms for the phenomenon.

A Test Item Functions Differently in One Group of Testtakers