Pervasive developmental disorders and autism spectrum disorders: Are these disorders one and the same?

Masaru Tateno, Saya Kikuchi, Kumi Uehara, Kyoko Fukita, Naoki Uchida, Ryuji Sasaki, Toshikazu Saito

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The concept of pervasive developmental disorders (PDD) and autism spectrum disorders (ASD) closely resemble each other. Both ICD-10 and DSM-IV use the term PDD. The authors surveyed the perception of PDD/ASD and attitudes toward terminology. The subjects of this study were 205 medical/social-welfare professionals working in fields relating to developmental disorders. Questionnaires were mailed to site investigators at the collaborating institutes. With regard to what the scope of ASD and PDD encompasses, the answers were almost equally divided among three views: ASD and PDD are the same, PDD is wider in scope and ASD is wider. The terms PDD and autism were used in slightly different ways depended upon the situation. Our results demonstrate that the parameters of PDD and ASD are unclear and that the terms related to PDD/ASD are often used differently. Further studies are required to develop more clear and reliable diagnostic criteria for PDD.

Original languageEnglish
Pages (from-to)67-70
Number of pages4
JournalPsychiatry Investigation
Issue number1
Publication statusPublished - 2011 Mar


  • Asperger's syndrome
  • Autism
  • Autism spectrum disorders
  • Diagnostic criteria
  • Pervasive developmental disorders

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry


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