Specific Learning Disabilities is characterized by a disorder in one or more of the basic psychological processes involved in understanding or in using language, spoken or written, that may manifest itself in an imperfect ability to listen, think, speak, read, write, spell or to do mathematical calculations. children with specific learning disabilities will demonstrate a severe discrepancy between intellectual ability and achievement in one or more of the following areas: basic reading skills, reading comprehension, mathematical calculation, mathematical reasoning, oral expression, listening comprehension, or written expression. No single single criterion or specific number of characteristics can be used in identifying children with specific learning disabilities. Rather, the age-appropriateness of observed behaviors and the frequency, intensity, and duration of a child's learning problems are critical in distinguishing specific learning disabilities from learning problems resulting from such factors as low motivation, underachievement, or inadequate instruction.