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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

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Examining Item Difficulty and Response Time on Perceptual Ability Test Items.
Peer reviewed Peer reviewed
Yang, Chien-Lin; O'Neill, Thomas R.; Kramer, Gene A. – Journal of Applied Measurement, 2002
Studied item calibration stability in relation to response time and the levels of item difficulty between different response groups on a sample of 389 examinees responding to 6 subtest items of the Perceptual Ability Test of the Dental Admission Test. Results show that scores were equally useful for all groups, and different sources of item…
Descriptors: Ability, College Students, Dentistry, Difficulty Level
An Investigation of Gender Differences in the Components Influencing the Difficulty of Spatial Ability Items.
Peer reviewed Peer reviewed
Kramer, Gene A.; Smith, Richard M. – Journal of Applied Measurement, 2001
Examined the role that gender differences play in the determination of the components influencing the difficulty of spatial ability items. Results for 2,245 examinees taking a spatial ability test that is part of the Dental School Admission Battery show that component difficulties show little variation across gender. (SLD)
Descriptors: College Entrance Examinations, College Students, Dentists, Difficulty Level