Problem: The researchers had four experienced observers administer the ICP survey. All four had prior teaching experience in inclusive classrooms, and all were certified to work and observe special-needs children. All were trained in administering the ICP, and the ICP scores from the four observers were highly correlated, indicating that they perceived the classrooms similarly. Such control among the observers was necessary to make sure they were not showing any bias in their observations and that the operational definitions used were thorough and clear.
What validity measure does this information concern and why? Need Assignment Help?