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Glossary Item Description

The iPhone is a smartphone designed, manufactured and marketed by Apple Inc.


The iPod is a portable media player designed, manufactured and marketed by Apple Inc.


IQ is an abbreviation for intelligence quotient, a score derived from one of several different standardised tests attempting to measure intelligence.

Irlen Lenses

Irlen lenses are lenses prescribed and supplied by the Irlen Institute to alleviate the symptoms of scotopic sensitivity syndrome, described as a form of visual stress.

Irlen Syndrome

Irlen syndrome is a type of visual stress, a condition in which an individual cannot see clearly so the world seems disjointed, confused and scary.


Iron is a mineral found in many foods including red meats, fish, poultry, lentils and beans. It can also be taken as a dietary supplement.


Irritability is a term used to describe the actions of individuals who are especially fussy, whiny, and fretful, despite attempts at comforting and soothing them.


Itraconazole is an antifungal, antibiotic drug sold under various brand names including Sporanox.


IVIG is an acronym for intraveneous immunoglobulin, a protein used by the immune system to identify and neutralise foreign objects like bacteria and viruses.

About This Glossary

This glossary is designed to explain some of the jargon and gobbledygook used by some people when they talk about autism or research..

You may be able to find more information, including links to other parts of this website, by clicking on the title of an item.

If you can't find the word you are looking for, or you know of a word we should include, please email info@researchautism.net


The fact that an intervention is listed in this glossary does not necessarily mean that we agree with its use. Nor does it necessarily mean that there is any scientifically valid or reliable evidence behind it.