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.
^Kolb, Bryan; Ian Q. Whishaw (2008). Fundamentals of Human Neuropsychology. New York: Worth. p. 443. ISBN 978-0-7167-9586-5.
^Spreen, O.; Risser, A. (2003). Assessment of aphasia. Oxford: Oxford University Press. ISBN 9780198032250.
^Pendleton, Mark G.; et al. (Dec 1982). "Diagnostic utility of the thurstone word fluency test in neuropsychological evaluations". Journal of Clinical Neuropsychology. 4 (4): 307–317. doi:10.1080/01688638208401139. PMID 7174838.
^Leslie A. Burton, Debra Henninger & Jessica Hafetz; et al. (2005). "Gender Differences in Relations of Mental Rotation, Verbal Fluency, and SAT Scores to Finger Length Ratios as Hormonal Indexes". Developmental Neuropsychology. 28 (1): 493–505. doi:10.1207/s15326942dn2801_3. PMID 15992253. S2CID 26611942.
^S. L. Morrison-Stewart; et al. (1992). "Frontal and non-frontal lobe neuropsychological test performance and clinical symptomatology in schizophrenia". Psychological Medicine. 22 (2): 353–359. doi:10.1017/S0033291700030294. PMID 1615102. S2CID 36676656.
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