Rheta DeVries is a developmental psychologist, Professor of Curriculum and Instruction, and Director of the Regents' Center for Early Developmental Education. Betty Zan is Assistant Professor of Curriculum and Instruction. Carolyn Hildebrandt is Associate Professor of Psychology. Rebecca Edmiaston is Assistant Professor of Curriculum and Instruction. Christina Sales is a Research Associate. All are at the University of Northern Iowa and the Regents' Center for Early Developmental Education.