Educating Exceptional Children: An Introduction to Special Education About the Author S.K. MANGAL (Ph.D., Education) has been Principal, and Professor and Head of the Department of Postgraduate Studies, C.R. College of Education, Rohtak, Haryana. A distinguished teacher and administrator who has devised several psychological tests, Professor Mangal is the author of, among others, Advanced Educational Psychology, Statistics in Psychology and Education and Essentials of Educational Psychology (all published by Prentice-Hall of India). He has also published extensively in reputed journals.