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Glossary Item Description
Double Helix Water

Double helix water is a solution of stable water clusters with a double helix configuration believed by some people to provide healing properties.

Douglas Developmental Disabilities Center Program

The Douglas Developmental Disabilities Center Program is a form of early intensive behavioural intervention, delivered by the Douglas Developmental Disabilities Center at Rutgers University, New Jersey.

Downing Technique

The Downing technique is a form of lightwave stimulation in which an individual looks at coloured light produced by a special machine called a lumatron or a photron light stimulator.


Dramatherapy is a creative intervention which uses drama and other performance arts to help individuals bring about psychological, emotional and social changes.

Driving Simulator

A driving simulator is a device that enables the operator to reproduce the experience of driving a motor vehicle.


Drug is another term for medication, that is, any chemical substance intended for use in the medical diagnosis, cure, treatment, or prevention of disease.


DSM-IV is an acronym for the Diagnostic and Statistical Manual, fourth edition.


DSM-V is an acronym for the Diagnostic and Statistical Manual, fifth edition.

DSP Model

The DSP model is another name for the Developmental Social-Pragmatic model, which is another name for developmental interventions, a wide group of interventions designed to target the core deficits within each child rather than his or her outward behaviours.


DTI is an acronym for discrete trial instruction, another term for discrete trial training.


DTT is an acronym for discrete trial training, a highly-structured training technique that involves a trainer instructing an individual with autism using a series of learning opportunities or trials.


Duetact is a brand name for pioglitazone, a drug which is used with a diet and exercise programme and sometimes with other drugs to treat type 2 diabetes.

DVD Instruction or Modelling

DVD instruction or modelling is another name for video modelling.

Dydadic Support Environment

Dydadic support environment is another term for holding therapy, an intervention which consists of forced holding by a therapist or parent until the child stops resisting or until a fixed time period has elapsed.


Dynacin is a brand name of minocycline, a type of tetracycline antibiotic drug used to treat bacterial infections.


Dyskenesia is a condition which produces abnormal movements of the muscles.


Dyslexia is a significant difficulty with or impairment in reading ability, when reading is compared with other aspects of psychological functioning.

Dyslexia Dyspraxia Attention Treatment

Another name for the DORE method, an intervention which consists of a series of physical exercises which are designed to stimulate the brain so that it speeds up the processing of information.


Dyspraxia is another name for developmental co-ordination disorder, a condition affecting physical co-ordination that causes a child to perform less well than expected for his or her age in daily activities and appear to move clumsily.

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.