The Relation of Test Score to the Ability Underlying the Test
- Author(s):
-
Lord, Frederic M.
- Publication Year:
- 1952
- Report Number:
-
RB-52-10
- Source:
-
ETS Research Bulletin
- Document Type:
- Report
- Page Count:
- 44
- Subject/Key Words:
-
Ability,
Item Response Theory,
Raw Scores,
Test Theory
Abstract
14) A test composed of items of equal discriminating power but of varying difficulty will not be as discriminating in the neighborhood of any single ability level as would a test composed of items of the same discriminating power but all of appropriate difficulty for that level.
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