Rating several essays

  • Nicholas T. Longford
Part of the Springer Series in Statistics book series (SSS)


Chapters 2 and 3 were concerned with the measurement of examinees’ performances on a single item. Even though an essay written by an examinee may be much more informative about his/her ability than a multiple-choice item, a single essay is unlikely to provide sufficient information, especially in the presence of imperfect grading by the raters. Also, the examinee’s performance may be unduly affected by the essay topic, and no single topic can represent the tested domain in a balanced way.


True Score Item Difficulty Discrimination Parameter Score Selection Observe Score 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag New York, Inc. 1995

Authors and Affiliations

  • Nicholas T. Longford
    • 1
  1. 1.Research DivisionEducational Testing ServicePrincetonUSA

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