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Peer reviewed Peer reviewed
Thompson, Bruce; Diamond, Karen E.; McWilliam, Robin; Snyder, Patricia; Snyder, Scott W. – Exceptional Children, 2005
Only true experiments offer definitive evidence for causal inferences, but not all educational interventions are readily amenable to experiments. Correlational evidence can at least tentatively inform evidence-based practice when sophisticated causal modeling or exclusion methods are employed. Correlational evidence is most informative when…
Descriptors: Intervals, Inferences, Research Methodology, Correlation
Peer reviewed Peer reviewed
Snyder, Patricia; Thompson, Bruce; McLean, Mary E.; Smith, Barbara J. – Journal of Early Intervention, 2002
Findings are reported related to the research methods and statistical techniques used in 450 group quantitative studies examined by the Council for Exceptional Children's Division for Early Childhood Recommended Practices Project. Studies were analyzed across seven dimensions including sampling procedures, variable selection, variable definition,…
Descriptors: Disabilities, Early Childhood Education, Early Intervention, Educational Practices