A literature review was performed on motor stereotypies defined as "diverse range of movements, behaviours, and/or vocalizations that are repetitive, lack clear function, and sometimes appear to have a negative impact upon an individual’s life". Motor stereotypies commonly occur in children with autism. The review indicated that the purpose of motor stereotypies remained unknown but it may be to maintain arousal. Behavioral treatments for motor stereotypies seem to be the most effective but they are difficult to implement in children younger than 7 years old.
Reference: BARRY, S., BAIRD, G., LASCELLES, K., BUNTON, P. and HEDDERLY, T. (2011), Neurodevelopmental movement disorders – an update on childhood motor stereotypies. Developmental Medicine & Child Neurology. doi: 10.1111/j.1469-8749.2011.04058.x
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