When all the items in a scale or index fit together and measure a single concept,this is called
A)unidimensionality.
B)unidirectional.
C)unanimous.
D)unipositional.

Question

Quizplus · Accepted Answer

Unidimensionality refers to the property of all the items in a scale or index measuring a single concept. This means that each item in the scale is related to the same underlying construct or variable, and can be used together to create a composite score or measure of that construct. Unidimensionality is an important property in measurement and ensures that the scale or index is reliable and valid for measuring the intended construct.

When All the Items in a Scale or Index Fit