Thurstone Word Fluency Test

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Thurstone Word Fluency Test
Synonyms Chicago Word Fluency Test
Purposemeasure an individual's symbolic verbal fluency

The Thurstone Word Fluency Test, also known as the Chicago Word Fluency Test (CWFT), [1] was developed by Louis Thurstone in 1938. [2] This test became the first word fluency psychometrically measured test available to patients with brain damage. [3] The test is a used to measure an individual's symbolic verbal fluency. [4] [5] [6] The test asks the subject to write as many words as possible beginning with the letter 'S' within a 5-minute limit, then as many words as possible beginning with letter 'C' within 4 minute limit. The total number of 'S' and 'C' words produced, minus the number of rule-breaking and perseverative responses, yield the patients' measure of verbal fluency.


The CWFT is used as one of the measures of brain's frontal lobe function. A related test, the COWAT (Controlled oral word association test), is part of the Halstead-Reitan Neuropsychological Battery.

See also

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  1. Kolb, Bryan, and Ian Q. Whishaw (2008). Fundamentals of Human Neuropsychology. New York: Worth. p. 443. ISBN   978-0-7167-9586-5.CS1 maint: uses authors parameter (link)
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