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Understanding autism
Understanding autism

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Glossary


Browse the glossary using this index

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L

Longitudinal study

A study which follows the same participants over a substantial period of time – usually several years.


Lower and Middle Income Countries (LMIC)

The term used by the World Health Organisation and other international agencies to refer to countries where income falls below a certain level. A more meaningful category than ‘developing countries’ or ‘under-developed countries’, terms which are nowadays regarded as inappropriate.


Low-functioning

A term used by some specialists to describe cases of autism where the individuals' full-scale IQ score is below 70, i.e. in the disabled range. This is not a formal diagnostic category, but rather a term sometimes used informally in diagnosis as well as in everyday situations and research. See also high-functioning.