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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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Taylor, Paul J.; Russ-Eft, Darlene F.; Taylor, Hazel – American Journal of Evaluation, 2009
We tested for inflationary bias introduced through retrospective pretests by analyzing traditional pretest, retrospective pretest, and posttest evaluation data collected on a first-line supervisory leadership training program, involving 196 supervisors and their subordinates, across 17 organizational settings. Retrospective pretest ratings by both…
Descriptors: Program Evaluation, Pretests Posttests, Leadership Training, Effect Size