Kimberly M. Sheridan is an associate professor in the College of Education and Human Development and the College of Visual and Performing Arts at George Mason University and is co-director of the Mason Arts Research Center. Shirley Veenema is an art teacher (elementary and high school), a researcher at Project Zero from 1987-2007, and a visual artist. Ellen Winner is professor emerita of psychology at Boston College and a senior research associate at Project Zero, Harvard Graduate School of Education. Lois Hetland is professor emerita of art education at Massachusetts College of Art and Design.