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The Serial Sevens Test

The Serial Sevens Test Abstract The serial subtraction of seven beginning with the number 100 is a conventional part of mental status evaluation of patients. My observations of its administration by medical students and residents clearly indicates they do not administer it as originally described, eg, not done as a timed test, nor do they know how to interpret the results obtained. Hayman1 proposed the test in 1942 as a "two minute clinical test for measurement of intellectual impairment in psychiatric disorders," stating the following: The test is administered orally, the subject being asked to take 7 away from 100, to take 7 away from the answer obtained, and so on. The subjects are placed as much at ease as possible and encouragement is freely given, but no assistance. 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. Answers more References 1. Hayman M: Two minute clinical test for measurement of intellectual impairment in psychiatric disorders. Arch Neurol Psychiatr 1942;47:454-464.Crossref 2. Smith A: The serial sevens subtraction test. Arch Neurol 1957;17:78-80.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Internal Medicine American Medical Association

The Serial Sevens Test

Abstract

Abstract The serial subtraction of seven beginning with the number 100 is a conventional part of mental status evaluation of patients. My observations of its administration by medical students and residents clearly indicates they do not administer it as originally described, eg, not done as a timed test, nor do they know how to interpret the results obtained. Hayman1 proposed the test in 1942 as a "two minute clinical test for measurement of intellectual impairment in psychiatric...
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Publisher
American Medical Association
Copyright
Copyright © 1982 American Medical Association. All Rights Reserved.
ISSN
0003-9926
eISSN
1538-3679
DOI
10.1001/archinte.1982.00340190148022
Publisher site
See Article on Publisher Site

Abstract

Abstract The serial subtraction of seven beginning with the number 100 is a conventional part of mental status evaluation of patients. My observations of its administration by medical students and residents clearly indicates they do not administer it as originally described, eg, not done as a timed test, nor do they know how to interpret the results obtained. Hayman1 proposed the test in 1942 as a "two minute clinical test for measurement of intellectual impairment in psychiatric disorders," stating the following: The test is administered orally, the subject being asked to take 7 away from 100, to take 7 away from the answer obtained, and so on. The subjects are placed as much at ease as possible and encouragement is freely given, but no assistance. 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. Answers more References 1. Hayman M: Two minute clinical test for measurement of intellectual impairment in psychiatric disorders. Arch Neurol Psychiatr 1942;47:454-464.Crossref 2. Smith A: The serial sevens subtraction test. Arch Neurol 1957;17:78-80.Crossref

Journal

Archives of Internal MedicineAmerican Medical Association

Published: Jun 1, 1982

References