Perceptual and cognitive deficits assumed to be the underlying causes for the reading, and writing problems, in the learning disabled provided the base for the development of the Diagnostic Test of Reading Disorders. The test identifies and diagnoses the process deficits that cause disorders in both fluency and accuracy of the reading. It is an individually administered instrument. Each child has to be administered both Level I and Level II tests. It was standardized on a sample of 1100 school going boys and girls in the age range of 8-11 years. It is a non-timed test.