Mental retardation is a term for a pattern of persistently slow learning of basic motor and language skills ("milestones") during childhood, and a significantly below-normal global intellectual capacity as an adult. One common criterion for diagnosis of mental retardation is a tested intelligence quotient (IQ) of 70 or below. This book presents leading-edge research from around the world.
Mental retardation is a term for a pattern of persistently slow learning of basic motor and language skills during childhood, and a below-normal global intellectual capacity as an adult. One common criterion for diagnosis of mental retardation is a tested intelligence quotient of 70 or below. This book presents research in this field.