To assess the reliability of a measure, a researcher administers different versions of the same test to the same individuals at two points in time. This procedure is an example of
Select one
A. test-retest reliability.
B. interrater reliability.
C. alternate forms reliability.
D. split-half reliability.
The correct answer and explanation is:
The correct answer is C. alternate forms reliability.
Explanation:
Alternate forms reliability refers to a method of assessing the consistency of a test by administering two different versions of the same test to the same individuals at two separate points in time. The idea behind this approach is to measure whether the two forms of the test yield similar results, indicating the reliability of the test over time and across different versions. This method helps to ensure that the test is not biased by the wording or specific items included in one version.
This procedure is useful because it minimizes the possibility of participants remembering answers from a previous test, which could be a problem with test-retest reliability, where the same test is administered repeatedly. In alternate forms reliability, the use of different versions helps assess whether the test consistently measures the same construct across different forms.
For example, if a researcher is testing the math ability of students, they might use one form of the test during the first session and a second, equivalent form of the test during the second session. By comparing the scores from both tests, the researcher can determine whether the two forms are equivalent in terms of measuring the same skills or knowledge.
This method is often used in educational assessments, psychological testing, and other fields where the consistency of a measurement tool is important. The reliability of the measure is indicated by a high correlation between the scores from the two different forms of the test.
In contrast, test-retest reliability (A) involves administering the same test to the same participants at two different times to check for consistency over time. Interrater reliability (B) measures the consistency of ratings or observations made by different raters. Split-half reliability (D) involves dividing a test into two halves and comparing the results to assess internal consistency.