1 Department of Psychology in Education School of Education, University of Pittsburgh, 5937 Wesley W. Posvar Hall, Pittsburgh, PA, 15260, USA. swanless@pitt.edu.
2 Center for Advanced Study of Teaching and Learning Curry School of Education, University of Virginia, 405 Emmet Street South, Charlottesville, 22904, VA, USA.
3 T. Denny Sanford School of Social and Family Dynamics, Arizona State University, 411 North Central Avenue, Phoenix, AZ, 85004, USA.
4 Department of Instructional Psychology & Technology David O. McKay School of Education, Brigham Young University, Provo, UT, 84602, USA.
5 Graduate School of Education, Harvard University, 13 Appian Way, Cambridge, MA, 02138, USA.