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Mark Lipsey
Predicting Persistence and Fadeout Across Multi-Site RCTs of an Early Childhood Mathematics Curriculum Intervention
Tyler W. Watts, Caroline M. Botvin, Drew H. Bailey, Emma R. Hart, Shira Mattera, Douglas H. Clements, Julie Sarama, Dale Farran, Mark Lipsey.Topics: Student LearningThis study examined predictors of persistence and fadeout across multiple cluster RCTs that evaluated a preschool mathematics curriculum. We used meta-analytic methods to explore how impacts on student mathematics achievement faded between post-test (i.e., endline) and one-year follow-up. We… more →
Teachers, Schools, and Pre-K Effect Persistence: An Examination of the Sustaining Environment Hypothesis
Topics: Student LearningThe sustaining environments thesis hypothesizes that PreK effects are more likely to persist into later grades if children experience high-quality learning environments in the years subsequent to PreK. This study tests this hypothesis using data from a statewide PreK randomized experiment in… more →