Administering two instruments within a short period of time is necessary in order to establish which of the following?
A) Interrater reliability
B) Alternate forms reliability
C) Predictive validity
D) Content validity

Question

Quizplus · Accepted Answer

Administering two instruments within a short period of time is necessary in order to establish alternate forms reliability, which refers to the consistency of results between different versions of the same test. This is usually achieved by administering two versions of a test that are designed to measure the same construct to the same group of individuals within a short period of time. By comparing the scores of the two versions, researchers can determine the degree to which the two versions produce consistent results.

Administering Two Instruments Within a Short Period of Time Is