What is assessed when scores from one half of a test are correlated with scores from the other half?

The assessment described in the question involves correlating scores from one half of a test with scores from the other half. This method is specifically designed to evaluate the consistency of the test results, also referred to as reliability. When you divide a test into two equivalent halves and examine how similar the scores are, you are measuring what is known as split-half reliability. This type of reliability is important because it helps determine whether a test produces stable and consistent results over different segments of the assessment.

In this context, if a test shows high split-half reliability, it indicates that the items in the test are measuring the same underlying construct consistently across both halves. If the scores from the two halves correlate highly, it suggests that the test is likely reliable as an overall measure. Therefore, the correct answer is that the method assesses split-half reliability, reflecting how well the different parts of the test correspond with one another.