In measurement employing latent-trait models
A) the underlying trait is assumed to be unidimensional.
B) all the test items are thought to measure a single trait.
C) the characteristic being measured is not measured directly.
D) All of these

Question

Quizplus · Accepted Answer

Latent-trait models assume that the underlying trait is unidimensional, meaning it can be measured along a single continuum. Additionally, all test items are thought to measure this single trait, and the characteristic being measured is not measured directly, but rather inferred from the patterns of responses on the test items. Therefore, all three statements are true and the correct answer is D.

In Measurement Employing Latent-Trait Models