Which of the following is true regarding Classical Test Theory and/or Item Response Theory (IRT) ?

A) Classical Test Theory provides more sophisticated information regarding test items.
B) IRT examines items individually to assess their ability to measure the trait.
C) In IRT, test items are viewed as a whole in an attempt to reduce measurement error.
D) As reliability increases in Classical Test Theory, the measurement error increases.

Item Response Theory

An extension of classical test theory that allows for more detailed analyses of individual test items. Tools such as the item characteristic curve allow in-depth examination of an item’s discrimination and difficulty.

Classical Test Theory

Classical Test Theory is a framework used in psychological testing and assessment that evaluates the reliability and validity of test scores based on the analysis of test score properties.

Measurement Error

The difference between the actual value and the measured value due to inaccuracies in data collection, recording, or analysis in the context of research or testing.