Sample interview questions: Have you conducted any studies on test length and its impact on reliability and validity?
Sample answer:
Yes, I have conducted several studies that have investigated the impact of test length on reliability and validity. In general, these studies have found that test length has a positive effect on both reliability and validity.
One study, for example, examined the impact of test length on the reliability of a personality inventory. The results showed that the reliability of the inventory increased as the number of items increased. This is likely because longer tests are more likely to sample a wider range of behaviors, which leads to a more accurate measure of the underlying trait.
Another study examined the impact of test length on the validity of an achievement test. The results showed that the validity of the test increased as the number of items increased. This is likely because longer tests are more likely to cover a wider range of content, which leads to a more accurate measu… Read full answer