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Glossary Item Description
GF diet

GF diet is an acronym for the gluten-free diet, a diet which avoids or reduces foods which contain gluten, a substance found in cereals.

Giant Steps

Giant Steps is a school-based programme which offers a range of therapies.

Gilliam Autism Rating Scale (GARS)

The Gilliam Autism Rating Scale (GARS) is a standardised instrument for the assessment and diagnosis of autism and other severe behavioural conditions.

Ginkgo Biloba

Ginkgo biloba ia a herb extract used to treat circulatory disorders and enhance memory.


GLA is an acronym for gamma linolenic acid, an omega-6 fatty acid found in some plants, such as borage and evening primrose.

Glandular Therapy

Glandular therapy is another term for stem cell therapy, which include various procedures in which processed tissue from animal embryos, foetuses or organs, is injected or taken orally.

Global Development Delay

Global development delay is another term for development delay, a significant lag in a child's physical, cognitive, behavioural, emotional, or social development.


Glucose is a simple sugar found in the blood and is the main sugar that the body manufactures and the body's main source of energy.


Glutamate is an amino acid which acts as a neurotransmitter within the central nervous system.


Glutamine is a conditionally essential amino acid used as a dietary supplement.


Glutathione is a tripeptide consisting of the amino acids L-Cysteine, L-Glutamic Acid, and Glycine.


Gluten is a protein found in cereals such as wheat, barley and rye.

Gluten-Free Diet

The gluten-free diet is a diet which requires the individual to avoid or reduce sources of gluten (a protein found in cereals such as wheat, oats, rye and barley).

Gluten-Free, Casein-Free Diet

The gluten-free casein-free diet is a diet which involves avoiding all foodstuffs which contain gluten and casein.

Goat Weed

Goat weed is another term for St. John's Wort, a plant used to treat a range of conditions including depression.

Gold Salts

Gold salts are compounds which contain tiny amounts of gold. They are sometimes found in medications used to treat inflammatory conditions such as arthritis.

Gold Sodium Thiomalate

Gold sodium thiomalate is a medication containing gold salts which is used to treat inflammatory conditions such as arthritis.

Graphic Organiser

Graphic organisers are a pictorial way of constructing knowledge and organising information.

Greenspan Method

The Greenspan Method is another name for the DIR Method, an intervention which focuses on helping children to master the building blocks of relating, communicating and thinking, rather than on the symptoms of autism alone.

Gross Motor Skill

A gross motor skill is a skill relating to movement of the body as a whole or the limbs. For example, the skill required to stand upright.

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.