1. Department of Special Education and Child Development, University of North Carolina at Charlotte, Charlotte, North Carolina, USA.
2. Department of Teaching and Learning, Temple University, Philadelphia, Pennsylvania, USA.
3. Juniper Gardens Children's Project, University of Kansas, Kansas City, Kansas, USA.
4. Department of Educational Psychology, University of Utah, Salt Lake City, Utah, USA.
5. Department of Educational Studies, Purdue University, West Lafayette, Indiana, USA.