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Cite this entry as: (2011) Serial 3s. In: Kreutzer J.S., DeLuca J., Caplan B. (eds) Encyclopedia of Clinical Neuropsychology. Springer, New York, NY.
Serial sevens, counting down from one hundred by sevens, is a clinical test used to test mental function; for example, to help assess mental status after possible head injury or in suspected cases of dementia. This well-known test, in active documented use since at least 1944,[1] was adopted as part of the mini-mental state examination. The test is also used in determining when a patient is becoming unconscious under anaesthetic, for example prior to major dental surgery.
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On its own, the inability to perform 'serial sevens' is not diagnostic of any particular disorder or impairment, but is generally used as a quick and easy test of concentration and memory in any number of situations where clinicians suspect that these cognitive functions might be affected. https://heavyclips480.weebly.com/free-chicken-invaders-2.html. Each subtraction is considered as a unit and calculations are made on the basis of the 14 possible correct subtractions, that is 93-86-79-72-65-58-51-44-37-30-23-16-9-2.[2]
Similar tests include serial threes where the counting downwards is done by threes, reciting the months of the year in reverse order, or spelling 'world' backwards.
A study involving uninjured high school athletes concluded that the serial sevens test is not appropriate when testing for concussion because it lacks specificity; the pass rate is too low to give any meaningful result. The ability to recite the months in reverse order was thought to be a more effective measure because the pass rate was higher for that test in uninjured athletes.[3]
The numbers of the serial sevens test are a recurring motif in Sarah Kane's play 4.48 Psychosis.
Serial 3s Test
References[edit]
^Jurgen Ruesch (1944). 'Intellectual Impairment in Head Injuries'. The American Journal of Psychiatry. 100 (4): 480–496. doi:10.1176/ajp.100.4.480.
^Manning, Robert Thomas (1982). 'The Serial Sevens Test'. Archives of Internal Medicine. 142 (6): 1192. doi:10.1001/archinte.1982.00340190148022. PMID7092427.
^Young, Cc; Jacobs, Ba; Clavette, K; Mark, Dh; Guse, Ce (Jul 1997). 'Serial sevens: not the most effective test of mental status in high school athletes'. Clinical Journal of Sport Medicine. 7 (3): 196–8. doi:10.1097/00042752-199707000-00008. ISSN1050-642X. PMID9262887.