Which reliability measurement is specifically designed for tests with two response options?

The Kuder-Richardson formula is specifically designed for tests that have dichotomous response options, typically where the responses are "correct/incorrect" or "yes/no." This formula provides a measure of internal consistency reliability for assessments where participants are faced with two distinct choices for each item. It is particularly useful for tests that do not have multiple response levels, distinguishing it from measures like Cronbach's alpha, which is applicable for items with multiple response options.

In contrast, other reliability measurements serve different purposes or are applicable to broader categories of assessments. For example, split-half reliability assesses the consistency of results across two halves of a test, but it does not specifically cater to tests with dichotomous response options. Similarly, Cronbach’s alpha measures internal consistency but is used for tests with more than two response categories. Test-retest reliability evaluates the stability of a test over time, which is not limited to the type of response options used. Therefore, the Kuder-Richardson formula stands out as the appropriate choice for reliability measurement in tests with two response options.