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Accessibility of Testing Within a Validity Framework

Hansen, Eric G.; Mislevy, Robert J.; Steinberg, Linda S.
Patent Issued:
May 15, 2007
Patent Number:
ETS Patent
Document Type:
Family ID:
Subject/Key Words:
Patent, Active Patent, Test Accessibility, Test Validity, Test-Takers with Disabilities, Test Takers, Knowledge Skills and Abilities (KSA), Proficiency


Methods for designing an assessment and providing accessibility features for a test taker profile are disclosed. A test taker profile, including multiple knowledge, skill and other attribute(s) (KSAs), is defined in which each KSA has a specific level. Each KSA is designated as either a focal KSA (an essential part of the targeted proficiency to be measured) or an ancillary KSA (not an essential part). For each focal KSA, a focal value (the value that the test taker must have to possess a high level in the targeted proficiency) is defined. For a particular test design alternative (which may include an accessibility feature), a requirement is determined for each KSA. An accessibility feature is selected which avoids indications of invalidity, including: a mismatch between the targeted proficiency and the expected proficiency; the test taker profile does not satisfy all ancillary requirements; and focal requirements are either excessive or insufficient.

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