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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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Pervasive Developmental Disorder(also: PDD, PDD-NOS, Pervasive Developmental Disorder Not Otherwise Specified)
A historical diagnostic category encompassing a group of neurodevelopmental conditions characterised by delays in socialisation, communication, and restricted patterns of behaviour. Under the DSM-IV, Pervasive Developmental Disorders included autism, Asperger syndrome, childhood…

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