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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

Showing all 4 results
Sources of Bias in Outcome Assessment in Randomised Controlled Trials: A Case Study
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Ainsworth, Hannah; Hewitt, Catherine E.; Higgins, Steve; Wiggins, Andy; Torgerson, David J.; Torgerson, Carole J. – Educational Research and Evaluation, 2015
Randomised controlled trials (RCTs) can be at risk of bias. Using data from a RCT, we considered the impact of post-randomisation bias. We compared the trial primary outcome, which was administered blindly, with the secondary outcome, which was not administered blindly. From 44 schools, 522 children were randomised to receive a one-to-one maths…
Descriptors: Statistical Bias, Research Methodology, Science Experiments, Research Design
Exploration of Direct and Indirect Associations of System-Level Policy-Amenable Variables with Reading Literacy Performance
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Scheerens, Jaap; Luyten, Hans; van den Berg, Stéphanie M.; Glas, Cees A. W. – Educational Research and Evaluation, 2015
As expectations of the economic impact of educational attainment are soaring (Hanushek & Woessmann, 2009) and conjectures about successful national educational reforms (Mourshed, Chijioke, & Barber, 2010) are welcomed by educational policy-makers in many countries, a careful assessment of the empirical evidence for these kinds of claims is…
Descriptors: Foreign Countries, Educational Attainment, Educational Change, Comparative Education
Tackling the Remaining Attainment Gap between Students with and without Immigrant Background: An Investigation into the Equivalence of SES Constructs
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Lenkeit, Jenny; Caro, Daniel H.; Strand, Steve – Educational Research and Evaluation, 2015
In England, students with immigrant background exhibit lower educational attainment than those without immigrant background. Family socioeconomic status (SES) helps explain differences in educational attainment, but a gap remains that differs in size for students with different immigrant backgrounds. While the explanatory repertoire for the…
Descriptors: Educational Attainment, Academic Achievement, Socioeconomic Status, Longitudinal Studies
Socioeconomic and Gender Group Differences in Early Literacy Skills: A Multiple-Group Confirmatory Factor Analysis Approach
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Lee, Julia Ai Cheng; Al Otaiba, Stephanie – Educational Research and Evaluation, 2015
Socioeconomic status and gender are important demographic variables that strongly relate to academic achievement. This study examined the early literacy skills differences between 4 sociodemographic groups, namely, boys ineligible for free or reduced-price lunch (FRL), girls ineligible for FRL, boys eligible for FRL, and girls eligible for FRL.…
Descriptors: Socioeconomic Status, Gender Differences, Emergent Literacy, Lunch Programs