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Download full textAlmond, Russell G.; Sinharay, Sandip – ETS Research Report Series, 2012
To answer questions about how students' proficiencies are changing over time, educational researchers are looking for data sources that span many years. Clearly, for answering questions about student growth, a longitudinal study--in which a single sample is followed over many years--is preferable to repeated cross-sectional samples--in which a…
Descriptors: Educational Research, Case Studies, Research Methodology, Literature Reviews
