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Abstract Title: Comparison of normalized gain and Cohen’s d for Force Concept Inventory results in an introductory mechanics course
Abstract: At Texas State University, we have been using the Force Concept Inventory (FCI) to assess our introductory mechanics course since the spring 2011 semester. This provides us with a large data set (N~2000) on which to perform detailed statistical analysis of student learning gains. Recent research has found conflicting results in the relationships between normalized gain, Cohen's d, pretest mean, which might lead to different interpretations of student learning gains. Specifically, in one study normalized gain was found to positively correlate with both pretest mean and pretest standard deviation, whereas Cohen's d did not; another study found that normalized gain did not correlate with pretest mean. We will present a comparison of three measures applied to our FCI data: the normalized gain calculated using course averages, the normalized gain calculated using matched individual scores, and Cohen's d.
Abstract Type: Contributed Poster Presentation

Author/Organizer Information

Primary Contact: David Donnelly
Texas State University
601 University Dr.
Department of Physics
San Marcos, TX 78666
Phone: 512-245-9128
and Co-Presenter(s)
Jean-Michel Mailloux-Huberdeau, Texas State University

Jayson Nissen, University of Maine

Eleanor W. Close, Texas State University

Contributed Poster

Contributed Poster: Download the Contributed Poster