In a study requiring interjudge reliability, what should researchers do?

In the context of interjudge reliability, it is essential to have multiple judges independently assess the same subjects to determine the consistency of their evaluations. By asking two speech-language pathologists (SLPs) to independently rate the subjects, researchers can compare their ratings to see if they reach the same conclusions. This approach provides a measure of agreement between the judges, which is fundamental for establishing interjudge reliability.

Using one SLP to rate subjects does not allow for assessing the variability or agreement between different judges. Likewise, having a single SLP conduct pre-and post-treatment evaluations or multiple ratings over time focuses more on intrajudge reliability, which measures consistency in an individual rater's performance rather than measuring the level of agreement between different raters. Thus, having two independent raters is the most effective way to establish interjudge reliability in this scenario.