Instruments that contain items that function differentially
A) may have reduced validity.
B) may have inflated reliability.
C) are last to be banked in an item bank.
D) are informally referred to as "DIFFED."

Question

Quizplus · Accepted Answer

Instruments that contain items that function differentially may have reduced validity because these items may be biased towards certain groups or demographics, leading to inaccurate or unfair measurement.

Answer: B 
 Inflated reliability is not a likely issue with instruments that contain items that function differentially since differential item functioning (DIF) can actually decrease reliability by introducing measurement error.

Answer: C 
 There is no evidence to suggest that instruments with differential items are last to be banked in an item bank. Item selection for an item bank is typically based on the item's psychometric properties, not on its potential to function differentially.

Answer: D 
 "DIFFED" is not a commonly used term in the field of psychometrics and does not accurately describe instruments with differential items.

Instruments That Contain Items That Function Differentially