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Glossary Item Description
Interpersonal Problem-Solving for Workplace Adaptation Programme

The Interpersonal Problem-Solving for Workplace Adaptation Programme is a vocational intervention, designed to help employees solve practical workplace problems.

Interpersonal Therapy

Interpersonal therapy looks at the way a condition can be triggered by events involving relationships with others, such as bereavements, disputes or relocation.


An intervention is any action (such as a treatment, a therapy or the provision of a service) which is designed to help people on the autism spectrum.

Intervention in BASIS programme

The Intervention in BASIS programme (iBASIS) is a combined, multi-component programme designed by the BASIS team at Manchester University.

Intervention Study

Intervention study is another term for clinical trial, which is an experiment to compare the effects of two or more healthcare interventions.


Intranasal means via the nose and usually refers to the delivery of medications.


Intraverbal is a term used within the verbal behaviour approach meaning to reply to a question or to provide some other kind of response to what someone else is saying.

Intuitive Overlay

Intuitive overlay is another term for coloured overlay, a piece of coloured, transparent plastic which is placed over a piece of text in order to make it easier to read.


Intuniv is a brand name for guanfacine is a type of drug called an alpha-2 adrenergic agonist used to treat high blood pressure.


Invega is a brand name for paliperidone, an atypical antipsychotic drug used to treat delusional psychosis.


The iPad is a tablet computer designed, manufactured and marketed by Apple Inc.


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.