Analyzing test items: using item response theory to validate assessments

  • Authors:
  • Leigh Ann Sudol;Cassandra Studer

  • Affiliations:
  • Carnegie Mellon University, Pittsburgh, PA, USA;Carnegie Mellon University, Pittsburgh, PA, USA

  • Venue:
  • Proceedings of the 41st ACM technical symposium on Computer science education
  • Year:
  • 2010

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Abstract

As professional educators we produce a large number of assessments for our students to complete. These assessments or exams are often evaluated informally based upon student feedback and simple measures such as average score on a question. This paper highlights another more rigorous approach to item evaluation, and presents an evaluation of several items from an assessment as examples of the type of information that Item Response Theory can provide.