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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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Borsboom, Denny – Measurement: Interdisciplinary Research and Perspectives, 2008
Achilles and the tortoise want to predict peoples' running performance from their age. In determining age the tortoise has cleverly asked his participants for their passports and has noted their date of birth, before letting them run half the distance between Achilles and himself. Achilles, however, has given his participants a questionnaire…
Descriptors: Psychometrics, Measurement, Models, Applied Linguistics