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Download full textCoalition for Evidence-Based Policy, 2007
This document contains a narrative overview of the hierarchy, followed by a one-page graphic summary. The purpose of the hierarchy is to help agency/program officials assess which study designs are capable of producing scientifically-valid evidence on the effectiveness of a STEM education project or practice ("intervention"). More specifically,…
Descriptors: Intervention, Research Methodology, Educational Objectives, Outcomes of Education
