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Activity Number: 42
Type: Contributed
Date/Time: Sunday, August 4, 2013 : 2:00 PM to 3:50 PM
Sponsor: Social Statistics Section
Abstract - #309361
Title: A Longitudinal Study of the Effect of a New Approach to Teaching Science Based on Multivariate Mixed Effects Models
Author(s): Mack Shelley*+ and Luke Fostvedt and Dai-trang Le and Marcia Laugerman and Brian Hand and William Therrien and Christopher Gonwa-Reeves
Companies: Iowa State University and Iowa State University and Iowa State University and University of Iowa and University of Iowa and University of Iowa and Iowa State University
Keywords: multi-level ; multivariate ; missing data ; cluster randomized trial
Abstract:

In a longitudinal cluster randomized trial, we investigate the impact of a new inquiry-based approach to teaching science, the science writing heuristic, on student's math, reading, and science test scores. There are 48 elementary schools (clusters) from Iowa participating in the study, with a total of roughly 2300 students per grade (third, fourth and fifth) per year enrolled in the schools. We are primarily interested in effect of the science writing heuristic on student-level outcomes over time. A multivariate longitudinal regression model (Shah et al 1997, Wu et al. 2009) is selected to simultaneous address correlation in the responses, non-ignorable missing data, and time dependence in the covariates.


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