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Title: The impact of coding the time variable on the status and growth parameters in a three-level quadratic growth curve model
Authors: Anumendem, Dickson ×
De Fraine, Beatrijs
Onghena, Patrick
Van Damme, Jan #
Issue Date: 11-Apr-2009
Conference: American Educational Research Association annual Meeting location:San Diego, California USA date:13-17 April 2009
Abstract: The fast growing use of longitudinal statistical analysis methods in educational effectiveness research is becoming invaluable as seen in Raudenbush (1989, 1995); Teddlie and Reynolds (2000); Rogosa, 1995; Singer and Willett, 2003. We have shown for the case of a three-level quadratic growth curve model how the choice of a specific time coding affects the covariance of the intercept and slope across persons. We have also shown when a time coding matters for the parameter estimates and interpretation. We developed a three-level quadratic growth curve model in the style of Laird and Ware (1982) and applied it to a longitudinal data from a large-scale project in 70 secondary schools in Flanders (Dutch speaking part of Belgium).
Publication status: published
KU Leuven publication type: IMa
Appears in Collections:Methodology of Educational Sciences
Education and Training
Educational Effectiveness and Evaluation
× corresponding author
# (joint) last author

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