With the recent proposal that pervasive developmental disorder (PDD) should be regarded as a syndrome, it has become clear that autism is not a childhood psychosis as previously thought, but is a developmental disorder. Based on this viewpoint, international classifications such as DSM-4 and ICD-10, have come into use in the clinical diagnosis and treatment of childhood psychoses. Furthermore, in relation to the increase in children with learning and behavioral problems, it is frequently difficult to discriminate the disorder in the fields of pedagogy, psychology and even medical science, and there has been a considerable increase in the level of interest in the complications of attention deficit/hyperactivity disorder, learning disabilities and PDD, especially in high functioning autism and Asperger syndrome.
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Accepted: June 1, 2001
Received: June 1, 2001
© 2001 Elsevier Science B.V. Published by Elsevier Inc. All rights reserved.