Ninte kunjine nee ariyumo? (Do you know your child?) is a book written by Joseph Maash, with an introductory chapter by Dr N R Arun Kishore. The book is a user-friendly guide for parents and professionals to identify and accept their children with their strengths and weaknesses. It also includes valid check lists for various disorders, so that the parents and teachers can use it for getting a first hand knowledge about the difficulties faced by their children. The book also suggests a number of remedial measures applicable according to the needs of the child. The real life experience shared by the author acts as a motivation for the parents who work with the child. The 8th edition of the book is available now. More than 16,000 copies of the book have been sold.