When a researcher is selecting items for a composite index,which of the following should be kept in mind?
A)Each item should have face validity.
B)A composite measure should be unidimensional.
C)There should be concern about the amount of variance provided by the items.
D)Each item should have face validity and the composite measure should be unidimensional.
E)Each item should have face validity, the composite measure should be unidimensional, and there should be concern about the amount of variance provided by the items.

Question

Quizplus · Accepted Answer

When selecting items for a composite index, it is important to consider multiple factors. Each item should have face validity, meaning that it appears to measure what it is supposed to measure. Additionally, the composite measure should be unidimensional, meaning that all the items are measuring the same underlying construct. Finally, there should be concern about the amount of variance provided by the items, as each item should contribute unique information to the overall index. Therefore, the best choice is E, as it encompasses all three important considerations.

When a Researcher Is Selecting Items for a Composite Index,which