Glossary

The Wilkins Rate of Reading Test is a test designed to measure the effects on reading of visual-perceptual distortions of text, such as apparent movement of the words and letters, blurring and coloured halos.

Williams syndrome is a genetic condition characterised by medical problems, including cardiovascular disease, developmental delays, and learning disabilities.

WISC is an acronym for the Wechsler Intelligence Scale for Children, a test designed to measure intelligence in children between the ages of six and 16.

A work system is a set of visual information informing an individual what to do while in a work or play area.

Worm therapy is another term for helminthic therapy, which is the use of parasitic worms, such as trichuris suis, for therapeutic purposes.

Y-aminobutyric acid is another name for gamma aminobutyric acid or GABA, an amino acid which acts as an inhibitory neurotransmitter in the central nervous system.

Yeast is a microscopic, one-celled organism belonging to the group of organisms called fungi

The yeast-free diet is a type of exclusion diet which requires you to avoid all sources of yeast.

Yi-gan san is another term for yokukansan, a traditional Asian herbal medicine.

Yoga is a mind-body practice in complementary and alternative medicine (CAM) with origins in ancient Indian philosophy.

Yoked prisms, another term for ambient prism lenses, are used to help improve ambient vision, the visual system related to spatial organisation.

Yokukansan, also known as yi-gan san, is a traditional Asian herbal medicine.

Z therapy is a form of attachment therapy, an extremely controversial group of therapies designed to help children with attachment disorders.

Zabel is a brand name of terbinafine hydrochloride, a type of antifungal medication used to treat athlete's foot, fungal nail infections and fungal skin infections.

Zarontin is a brand name for ethosuximide, a type of anticonvulsant.

Zeldox is a brand name for ziprasidone, a type of antipsychotic drug.

Zeolite is a food supplement which comes from a volcanic mineral called clinoptilolite, which is sometimes used as a chelating agent or to boost the immune system.

Zinc is a trace element found widely in the environment, including in many foodstuffs.

Ziprasidone is a type of atypical antipsychotic drug, which is sometimes used to treat problem behaviours in people on the autism spectrum.

Zolafren is a brand name for olanzapine, a type of typical antipsychotic drug.