Understanding Assessment: The Importance of Understanding the Confidence Interval

Any child tested multiple times would produce a range of values due to test conditions, examiner, the child’s state (e.g., fatigue, boredom, lack of motivation, illness), etc. These scores may not be reflective of the child’s “true score.” For this reason, it is important to include a confidence interval whenever a score is reported. The confidence interval is a range of values surrounding the score obtained from the administration of a standardized test. Read More