Item Response Theory

Item Response Theory (IRT) is a statistical framework used to analyze how individuals respond to test items, such as questions or statements. It focuses on the relationship between a person's traits (like ability or attitude) and their likelihood of answering items correctly or affirmatively. Unlike traditional scoring methods, IRT accounts for the difficulty of each item and the individual’s traits, providing more nuanced insights into performance. This approach helps in creating fairer assessments and can improve educational testing, surveys, and psychological evaluations by ensuring that items are appropriately aligned with respondents’ abilities.