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Method and system for controlling item exposure in computer based testing

  • US 5,841,655 A
  • Filed: 04/08/1996
  • Issued: 11/24/1998
  • Est. Priority Date: 04/08/1996
  • Status: Expired due to Term
First Claim
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1. A method of controlling item exposure in a computer based test in which a predetermined number of items selected from an item pool associated with the computer based test are administered to a test taker at a computer workstation, the items being selected for administration based on defined criteria, the method comprising the steps of:

  • ordering the items in the item pool to form an item list based on at least some of the defined criteria so that the items are listed from most desirable to least desirable to administer;

    generating a set of operant probabilities having a one-to-one correspondence with each item in the item pool, each operant probability being indicative of the probability that the corresponding item is administered given that all of the items being more desirable based on the item list are not administered first; and

    randomly selecting an item for administration based upon the set of operant probabilities and defining said item as the current item.

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