Assistant Professor, Department of Psychological and Brain Sciences, College of Arts and Sciences, Indiana University Bloomington
Associate Professor, Department of Psychological and Brain Sciences, College of Arts and Sciences, Indiana University Bloomington
Assistant Professor, Cognitive Science Program, College of Arts and Sciences, Indiana University Bloomington
Associate Professor, Department of Counseling, Educational Psychology and Special Education, College of Education, Michigan State University (past)
Assistant Professor, Cognitive Psychology
Elementary Teacher, Livermore Public Schools
1987 - 1990
Assistant Editor, Scott, Foresman, and Company
Research Associate, University of Chicago
Associate Professor, Program in Mathematics Education, College of Natural Science, Michigan State University (past)
Cognitive Science Program, College of Arts & Letters, Michigan State University (past)