Charles TeddlieCharles Teddlie is the Jo Ellen Levy Yates Distinguished Professor of Education at Louisiana State University (LSU). He received his PhD in Social Psychology from the University of North Carolina at Chapel Hill. He is currently a Guest Professor at te Research Institute of Educational Economics and Administration at Shenyang Normal University in China. He also served as the Assistant Superintendent for Research and Development at the Louisiana Department of Education. Teddlie's major writing interests are social science research methodology and school effectiveness research. He has taught research methods courses for over twenty years including statistics and qualitative research methods. Read More Read Less