Pt. I. Underlying Principles. I.1. Introduction. I.2. The Relationship between Mental Retardation, Autism and Autistic-Like Conditions -- Pt. II. Research on the Population of a Clinic for the Mentally Retarded. II.1. General Profile of the Entire Group of Children Admitted to the Observation Home. II.2. Comparison of the Children in the Study with and without a Pervasive Developmental Disorder. II.3. Problems with Classification and Diagnosis in Everyday Clinical Practice. II.4. Aspects of Management and Treatment of Mentally Retarded Children with a PDD. II.5. How Do Mentally Retarded Children with a PDD Fare after Discharge from the Observation Home? -- Pt. III. Diagnostics, Prevalence and Special Problems. III.1. Diagnosis of Pervasive Developmental Disorders in Mentally Retarded People. III.2. Prevalence of Pervasive Developmental Disorders in Mentally Retarded People. III.3. Pervasive Developmental Disorders and Temperament
III.4. Self-Enclosed Behaviour in Pervasive Developmental Disorders. III.5. Pervasive Developmental Disorders in People with Down Syndrome. III.6. Pervasive Developmental Disorders in Male Persons with Fragile-X Syndrome -- App. A. Classifying PDD in Mentally Retarded People on the Basis of the DSM-IV; Problems of Differentiation -- App. B. Directions for the Use of the PPD-MRS -- App. C. Assessment of Social Functioning by Means of the SRZ, SGZ, and SMZ