ALFREDO J. ARTILES is an assistant professor of special education and educational psychology at the University of California, Los Angeles, Graduate School of Education and Information Studies. He received a Ph.D. in special education from the University of Virginia. He is a member of the editorial board of several education journals and has published book chapters and articles in specialized journals that include The Journal of Special Education, Teaching and Teacher Education, and the International Journal of Special Education. Dr. Artiles has extensive experience with international education a s made presentations in scientific conferences in the United Guatemala, Honduras, Mexico, and Venezuela.
DANIEL P. HALLAHAN is a professor of special education at the University of Virginia. He holds a Ph.D. in education and psychology from the University of Michigan. Dr. Hallahan directed the federally funded University of Virginia Learning Disabilities Research Institute from 1977 to 1983 and has published numerous journal articles and book chapters. He has authored or coauthored several books that include Exceptional Children: Introduction to Special Education (with J. M. Kauffman), Handbook of Special Education (with J. M. Kauffman), and Introduction to Learning Disabilities (with J. M. Kauffman and J. W. Lloyd). He was the editor of Exceptionality from 1990-1992 and has presented in scientific conferences in the United States, Belgium, England, Canada, and The Netherlands.
GUIDO AGUILAR is a professor of psychology at Universidad Francisco Marroquín and the director of Clínicas de Psicología y Biorretroalimen