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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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Peer, Eyal; Gamliel, Eyal – Practical Assessment, Research & Evaluation, 2011
When respondents answer paper-and-pencil (PP) questionnaires, they sometimes modify their responses to correspond to previously answered items. As a result, this response bias might artificially inflate the reliability of PP questionnaires. We compared the internal consistency of PP questionnaires to computerized questionnaires that presented a…
Descriptors: Response Style (Tests), Questionnaires, Reliability, Undergraduate Students
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Cahan, Sorel; Gamliel, Eyal – Practical Assessment, Research & Evaluation, 2011
Standardized effect size measures typically employed in behavioral and social sciences research in the multi-group case (e.g., [eta][superscript 2], f[superscript 2]) evaluate between-group variability in terms of either total or within-group variability, such as variance or standard deviation--that is, measures of dispersion about the mean. In…
Descriptors: Social Sciences, Effect Size, Evaluation, Behavioral Science Research