FAS and CFL forms of verbal fluency differ in difficulty: A meta-analytic study

Applied Neuropsychology

Volumn 15, Issue 2, 2008, Pages 97-106

  Barry, Danielle ^a   Bates, Marsha E ^b   Labouvie, Erich ^b  

^a UNIVERSITY OF CONNECTICUT HEALTH CENTER   (United States)

^b RUTGERS UNIVERSITY   (United States)

Author keywords

CFL; Controlled Oral Word Association Test; COWA; FAS; Verbal fluency

Indexed keywords

ADULT; ARTICLE; CONTROLLED STUDY; DEMOGRAPHY; EDUCATIONAL STATUS; FEMALE; FLUENCY DISORDER; HUMAN; MAJOR CLINICAL STUDY; MALE; REGRESSION ANALYSIS; TASK PERFORMANCE; VERBAL BEHAVIOR;

ADULT; AGED; COGNITION DISORDERS; FEMALE; HUMANS; MALE; MIDDLE AGED; REPRODUCIBILITY OF RESULTS; WORD ASSOCIATION TESTS;

EID: 45949091381     PISSN: 09084282     EISSN: 15324826     Source Type: Journal    
DOI: 10.1080/09084280802083863     Document Type: Article

References (110)

1. Allison, P. (2001). Missing data. Sage University Papers Series on Quantitative Applications in the Social Sciences, 07-136. Thousand Oaks, CA: Sage.
2. Andrewes, D. (2001). Neuropsychology: From theory to practice. New York: Psychology Press.
3. *Axelrod, B. N., & Henry, R. R. (1992). Age-related performance on the Wisconsin Card Sorting, Similarities, and Controlled Oral Word Association Tests. The Clinical Neuropsychologist, 6(1), 16-26.
4. *Basso, M. R., Bornstein, R. A., & Lang, J. M. (1999). Practice effects on commonly used measures of executive function across twelve months. Clinical Neuropsychologist, 13(3), 283-292.
5. *Basso, M. R., Lowery, N., Neel, J., Purdie, R., & Bornstein, R. A. (2002). Neuropsychological impairment among manic, depressed, and mixed-episode inpatients with bipolar disorder. Neuropsychology, 16(1), 84-91.
6. *Beatty, W. W., Staton, R. D., Weir, W. S., Monson, N., & Whitaker, H. A. (1989). Cognitive disturbances in Parkinson's disease. Journal of Geriatric Psychiatry and Neurology, 2, 22-33.
7. Benton, A. L., & Hamsher, K. (1976). Multilingual Aphasia Examination manual. Iowa City, IA: University of Iowa.
8. *Berry, J., van Gorp, W. G., Herzberg, D. S., Hinkin, C., Boone, K., Steinman, L., & Wilkins, J. N. (1993). Neuropsychological deficits in abstinent cocaine abusers: Preliminary findings after two weeks of abstinence. Drug and Alcohol Dependence, 32, 231-237.
9. *Bolla, K. I., Lindgren, K. N., Bonaccorsy, C., & Bleecker, M. L. (1990). Predictors of verbal fluency (FAS) in the healthy elderly. Journal of Clinical Psychology, 46(5), 623-628.
10. *Bolla, K. I., Rothman, R., & Cadet, J. L. (1999). Dose-related neurobehavioral effects of chronic cocaine use. Journal of Neuropsychiatry and Clinical Neuroscience, 11(3), 361-369.
11. *Bondi, M. W., Houston, W. S., Salmon, D. P., Corey-Bloom, J., Katzman, R., Thal, L. J., & Delis, D. C. (2003). Neuropsychological deficits associated Alzheimer's disease in the very-old: Discrepancies in raw vs. standardized scores. Journal of the International Neuropsychological Society, 9, 783-795.
12. Boone, K. B. (1999). Clinical neuropsychological assessment of executive functions: Impact of age, education, gender, intellectual level, and vascular status on executive test scores. In B. L. Miller & J. L. Cummings (Eds.), The frontal lobes. New York: The Guilford Press.
13. *Boone, K. B., Lesser, I. M., Miller, B. L., Wohl, M., Berman, N., Lee, A., et al. (1995). Cognitive functioning in older depressed outpatients: Relationship of presence and severity of depression to neuropsychological test scores. Neuropsychology, 9(3), 390-398.
14. *Boone, K. B., Miller, B. L., Lesser, I. M., Hill, E., & D'Elia, D. (1990). Performance on frontal lobe tests in healthy, older individuals. Developmental Neuropsychology, 6, 215-223.
15. Borkowski, J. G., Benton, A. L., & Spreen, O. (1967). Word fluency and brain damage. Neuropsychologia, 5(2), 135-140.
16. Bryan, J., & Luszez, M. A. (2000). Measurement of executive function: Considerations for detecting adult age differences. Journal of Clinical and Experimental Neuropsychology, 22, 40-55.
17. Burke, S. N., & Barnes, C. A. (2006). Neural plasticity and the ageing brain. Nature Reviews Neuroscience, 7, 30-40.
18. *Caccappolo-Van Vliet, E., Manly, J., Tang, M.-X., Marder, K., Bell, K., & Stern, Y. (2003). The neuropsychological profiles of mild Alzheimer's disease and questionable dementia as compared to age-related cognitive decline. Journal of the International Neuropsychological Society, 9, 720-732.
19. *Carone, D. A., Benedict, R. H. B., Munschauer, F. E., Fishman, I., & Weinstock-Guttman, B. (2005). Interpreting patient/informant discrepancies of reported cognitive symptoms in MS. Journal of the International Neuropsychological Society, 11, 574-583.
20. *Cerhan, J. H., Ivnik, R. J., Smith, G. E., Tangalos, E. C., Petersen, R. C., & Boeve, B. F. (2002). Diagnostic utility of letter fluency, category fluency, and fluency difference scores in Alzheimer's disease. The Clinical Neuropsychologist, 16(1), 35-42.
21. *Cerhan, J. R., Folsom, A. R., Mortimer, J. A., Shahar, E., Knopman, D. S., McGovern, P. G., Hays, M. A., Crum, L. D., & Heiss, G. for the Atherosclerosis Risk in Communities (ARIC) Study investigators (1998). Correlates of cognitive function in middle-aged adults. Gerontology, 44, 95-105.
22. *Clark, C. M., Jacova, C., Klonoff, H., Kremer, B., Hayden, M., & Paty, D. (1997). Pathological association and dissociation of functional systems in multiple sclerosis and Huntington's disease. Journal of Clinical and Experimental Neuropsychology, 19(1), 63-76.
23. *Clark, L., Iverson, S. D., & Goodwin, G. M. (2001). A neuropsychological investigation of prefrontal cortex involvement in acute mania. American Journal of Psychiatry, 158(10), 1605-1611.
24. *Comilang, K. A. (2004). The influence of internalized cultural and racial socialization on the neuropsychological test performance of Asian Americans (Doctoral dissertation, Boston College, 2003). Dissertation Abstracts International, 64(8-B), 4028.
25. *Connor, P. D., Sampson, P. D., Bookstein, F. L., Barr, H. M., & Steissguth, A. P. (2000). Direct and indirect effects of prenatal alcohol damage on executive function. Developmental Neuropsychology, 18(3), 331-354.
26. *Crossley, M., D'Arcy, C., & Rawson, N. S. B. (1997). Letter and category fluency in community-dwelling Canadian seniors: A comparison of normal participants to those with dementia of the Alzheimer's type. Journal of Clinical and Experimental Neuropsychology, 19(1), 52-62.
27. *Crowell, T. A., Kieffer, K. M., Siders, C. A., & Vanderploeg, R. D. (2002). Neuropsychological findings in combat-related post-traumatic stress disorder. The Clinical Neuropsychologist, 16(3), 310-321.
28. Delis, D. C., Kaplan, E., & Kramer, J. H. (2001). Delis-Kaplan Executive Function System. San Antonio, TX: Harcourt Assessment.
29. *DeLuca, J., Guadino, E. A., Diamond, B. J., Christodoulo, C., & Engel, R. A. (1998). Acquisition and storage deficits in multiple sclerosis. Journal of Clinical and Experimental Neuropsychology, 20(3), 376-390.
30. *Demakis, G. J. (1999). Serial malingering on verbal and nonverbal fluency and memory measures. An analog investigation. Archives of Clinical Neuropsychology, 14(4), 401-410.
31. Devinsky, O., & D'Esposito, M. (2004). Neurology of cognitive and behavioral disorders. New York: Oxford University Press.
32. *Dinn, W. M., & Harris, C. L. (2000). Neurocognitive function in anti-social personality disorder. Psychiatry Research, 97, 173-190.
33. *Dursun, S. M., Robertson, H. A., Bird, D., Kutcher, D., & Kutcher, S. P. (2002). Effects of ageing on prefrontal temporal cortical network function in healthy volunteers as assessed by COWA: An exploratory survey. Progress in Neuro-Psychopharmacology & Biological Psychiatry, 26, 1007-1010.
34. *Elmudesi, F. J. (1995). Etiological considerations of brain injury concerning performance on tests measuring executive functions with an adult African American population (Doctoral dissertation, Adler School of Professional Psychology, 1994). Dissertation Abstracts International, 56(4-B), 2374.
35. *Feinstein, A., Goldberg, T. E., Nowlin, B., & Weinberger, D. R. (1998). Types and characteristics of remote memory impairment in schizophrenia. Schizophrenia Research, 30, 155-163.
36. *Friedman, L., Kenny, J. T., Jesberger, J. A., Choy, M. M., & Meltzer, H. Y. (1995). Relationship between smooth pursuit eye-tracking and cognitive performance in schizophrenia. Biological Psychiatry, 37, 265-272.
37. *Friend, K. B., Rabin, B. M., Groninger, L., Deluty, R. H., Bever, C., & Grattan, L. (1999). Language functions in patients with multiple sclerosis. The Clinical Neuropsychologist, 13(1), 78-94.
38. *Garrett, K. D., Browndyke, J. N., Whelihan, W., Paul, R. H., DiCarlo, M., Moser, D. J., Cohen, R. A., & Ott, B. R. (2004). The neuropsychological profile of vascular cognitive impairment-no dementia: Comparisons to patients at risk for cerebrovascular disease and vascular dementia. Archives of Clinical Neuropsychology, 19, 745-757.
39. *Goldstein, F. C., Levin, H. S., Goldman, W. P., Clark, A. N., & Altonen, T. K. (2001). Cognitive and neurobehavioral functioning after mild versus moderate traumatic brain injury in older adults. Journal of the International Neuropsychological Society, 7, 373-383.
40. *Gopal, K. (1997). Procedural and working memory in schizophrenia (Doctoral dissertation, United States International University, 1996). Dissertation Abstracts International, 58(1-B), 435.
41. *Gourovitch, M. L., Goldberg, T. E., & Weinberger, D. R. (1996). Verbal fluency deficits in patients with schizophrenia: Semantic fluency is differentially impaired as compared with phonological fluency. Neuropsychology, 10(4), 573-577.
42. *Hall, J. A. C. (1996). The assessment of cognitive functioning of persons with schizophrenia: Identification of neuropsychological markers (Doctoral dissertation, University of North Texas, 1995). Dissertation Abstracts International, 56(12-B), 7046.
43. *Heaton, R. K., Grant, I., Butters, N., White, D. A., Kirson, D., Atkinson, J. H., McCutchan, J. A., Taylor, M. J., Kelly, M. D., Ellis, R. J., Wolfson, T., Velin, R., Marcotte, T. D., Hesselink, J. R., Jernigan, T. L., Chandler, J., Wallace, M., Abramson, I., & the HNRC Group. (1995). The HNRC 500-Neuropsychology of HIV infection at different disease stages. Journal of the International Neuropsychological Society, 1(3), 231-251.
44. Henry, J. D., & Beatty, W. W. (2006). Verbal fluency deficits in multiple sclerosis. Neuropsychologia, 44, 1166-1174.
45. *Hildebrand, B. (1997). Neuropsychological predictors of academic success: Use of Controlled Oral Word Association Test, Trailmaking Test, and Wisconsin Card Sorting Test as measures of academic success among community college students (Doctoral dissertation, Adler School of Professional Psychology, 1996). Dissertation Abstracts International, 57(8-B), 5380.
46. *Hodges, J. R., Salmon, D. P., & Butters, N. (1990). Differential impairment of semantic and episodic memory in Alzheimer's and Huntington's diseases: A controlled perspective study. Journal of Neurology, Neurosurgery, and Psychiatry, 53, 1089-1095.
47. *Johnson, A. S., Flicker, L. J., & Lichtenberg, P. A. (2006). Reading ability mediates the relationship between education and executive function tasks. Journal of the International Neuropsychological Society, 12, 64-71.
48. *Johnson, D. E., Epstein, J. N., Waid, L. R., Latham, P. K., Voronin, K. E., & Anton, R. F. (2001). Neuropsychological performance deficits in adults with attention deficit/hyperactivity disorder. Archives of Clinical Neuropsychology, 16, 587-604.
49. *Johnson, R. M. (2001). A validation study of the Oral Trailmaking Test with a geriatric population (Doctoral dissertation, California School of Professional Psychology at Almeda, 2000). Dissertation Abstracts International, 61(8-B), 4470.
50. *Johnstone, B., Leach, L. R., Hickey, M. L., Frank, R. G., & Rupright, J. (1995). Some objective measurements of frontal lobe deficits following traumatic brain injury. Applied Neuropsychology, 2, 24-28.
51. *Kozora, E., & Cullum, C. M. (1995). Generative naming in normal aging: Total output and qualitative changes using phonemic and semantic constraints. The Clinical Neuropsychologist, 9(4), 313-320.
52. *Kozora, E., Filley, C. M., Julian, L. J., & Cullum, C. M. (1999). Cognitive functioning in patients with chronic obstructive pulmonary disease and mild hypoxemia compared with patients with mild Alzheimer's disease and normal controls. Neuropsychiatry, Neuropsychology, & Behavioral Neurology, 12(3), 178-183.
53. *Kramer, J. H., Reed, B. R., Mungas, D., Weiner, M. W., & Chui,H. C. (2002). Executive dysfunction in subcortical ischaemic vascular disease. Journal of Neurology, Neurosurgery, and Psychiatry, 72, 217-220.
54. *Kremen, W. S., Seidman, L. J., Faraone, S. V., & Tsuang, M. T. (2003). Is there disproportionate impairment in semantic or phonemic fluency in schizophrenia? Journal of the International Neuropsychological Society, 9, 79-88.
55. *Kuo, T. F. (2000). Sleep disordered breathing (SDB) and neuropsychological function: A community sample study (Doctoral dissertation, University of Arizona, 2000). Dissertation Abstracts International, 61(8-B), 4412.
56. Lacy, M. A., Gore, P. A., Pliskin, N. H., Henry, G. K., Heilbronner, R. L., & Hamer, D. P. (1996). Verbal fluency task equivalence. The Clinical Neuropsychologist, 10(3), 305-308.
57. *LaFleche, G., & Albert, M. S. (1995). Executive function deficits in mild Alzheimer's disease. Neuropsychology, 9(3), 313-320.
58. *Lebowitz, B. K., Shear, P. K., Steed, M. A., & Strakowski, S. M. (2001). Verbal fluency in mania: Relationship to number of manic episodes. Neuropsychiatry, Neuropsychology, and Behavioral Neurology, 14(3), 177-182.
59. *Libon, D. J., Glosser, G., Malamut, B. L., Kaplan, E., Goldberg, E., Swenson, R., & Sands, L. P. (1994). Age, executive functions, and visuospatial functioning in healthy, older adults. Neuropsychology, 8(1), 38-43.
60. *Lovejoy, D. W., Ball, J. D., Keats, M., Stutts, M. L., Spain, E. H., Janda, L., & Janusz, J. (1999). Neuropsychological performance of adults with attention deficit hyperactivity disorder (ADHD): Diagnostic classification estimates for measures of frontal lobe/executive functioning. Journal of the International Neuropsychological Society, 5(3), 222-233.
61. *Meyers, J. E., & Rohling, M. L. (2004). Validation of the Meyers Short Battery on mild TBI patients. Archives of Clinical Neuropsychology, 19, 637-651.
62. Mitrushina, M. M., Boone, K. B., & D'Elia, L. F. (1999). Handbook of normative data for neuropsychological assessment. New York: Oxford University Press.
63. Mittenberg, W., Seidenberg, M., O'Leary, D. S., & DiGiulio, D. V. (1989). Changes in cerebral functioning associated with normal age. Journal of Clinical and Experimental Neuropsychology, 11, 918-932.
64. *Monsch, A. U., Bondi, M. W., Butters, N., Slamon, D. P., Katzman, R., & Thal, L. J. (1992). Comparisons of verbal fluency tasks in detection of dementia of the Alzheimer type. Archives of Neurology, 49, 1253-1258.
65. *Munro, C. A., Saxton, J., & Butters, M. A. (2000). The neuropsychological consequences of abstinence among older alcoholics: A cross-sectional study. Alcoholism: Clinical and Experimental Research, 24(10), 1510-1516.
66. Muthén, L. K., & Muthén, B. O. (1998). MPlus user's guide. Los Angeles, CA: Muthén & Muthén.
67. *Nebes, R. D., Reynolds, C. F., Boada, F., Meltzer, C. C., Fukui, M. B., Saxton, J., Halligan, E. M., & DeKosky, S. T. (2002). Longitudinal increase in the volume of white matter hyperintensities in late-onset depression. International Journal of Geriatric Psychiatry, 17, 526-530.
68. *Norris, M. P., Blankenship-Reuter, L., Snow-Turek, L., & Finch, J. (1995). Influence of depression on verbal fluency performance. Aging and Cognition, 2(3), 206-215.
69. *Nyberg, L., Winocur, G., & Moscovitch, M. (1997). Correlation between frontal lobe functions and explicit and implicit stem completion in healthy elderly. Neuropsychology, 11(1), 70-76.
70. *Owens, J. F., Matthews, K. A., & Everson, S. A. (2002). Cognitive function effects of suppressing ovarian hormones in young women. Menopause: The Journal of the North American Menopause Society, 9(4), 227-235.
71. Plumet, J., Gil, R., & Gaonac'h, D. (2005). Neuropsychological assessment of executive functions in women: Effects of age and education. Neuropsychology, 19(5), 566-577.
72. *Rapport, L. J., Van Voorhis, A., Tzelepis, A., & Friedman, S. R. (2001). Executive functioning in adult attention-deficit hyperactivity disorder. The Clinical Neuropsychologist, 15(4), 479-491.
73. Reynolds, C. R., & Horton, A. M. (2006). Test of Verbal Conceptualization and Fluency. Austin, TX: Pro-Ed.
74. *Riccio, C. A., Wolfe, M. E., Davis, B., Romine, C., George, C., & Lee, D. (2005). Attention deficit hyperactivity disorder: Manifestation in adulthood. Archives of Clinical Neuropsychology, 20, 249-269.
75. *Rippeth, J. D., Heaton, R. K., Carey, C. L., Marcotte, T. D., Moore, D. J., Gonzalez, R., Wolfson, T., Grant, I., & the HNRC Group. (2004). Methamphetamine dependence increases risk of neuropsychological impairment in HIV infected persons. Journal of the International Neuropsychological Society, 10, 1-14.
76. *Rockers, D. M. (1997). A revised instruction set for the Booklet Category Test. (Doctoral dissertation, University of North Texas, 1996). Dissertation Abstracts International, 57(9-B), 4973.
77. *Ross, T. P. (2003). The reliability of cluster and switch scores for the Controlled Oral Word Association Test. Archives of Clinical Neuropsychology, 18, 153-164.
78. *Ross, T. P., Weinberg, M., Furr, A. E., Carter, S. E., Evans-Blake, L., & Parham, S. (2005). The temporal stability of cluster and switch scores using a modified COWAT procedure. Archives of Clinical Neuropsychology, 20, 983-996.
79. *Rouleau, I., Salmon, D. P., & Vrbancic, M. (2002). Learning, retention and generalization of a mirror tracing skill in Alzheimer's disease. Journal of Clinical and Experimental Neuropsychology, 24(2), 239-250.
80. *Royall, D. R., Palmer, R., Chiodo, L. K., & Polk, M. L. (2005). Normal rates of cognitive change in successful aging: The Freedom House Study. Journal of the International Neuropsychological Society, 11, 899-909.
81. *Ruby, P. G. (2000). Executive functioning in systemic lupus erythematosis (Doctoral dissertation, Pacific Graduate School of Psychology, 2000). Dissertation Abstracts International, 61(4-B), 2220.
82. Ruff, R. M., Allen, C. C., Farrow, C. E., Niemann, H., & Wylie, T. (1994). Figural fluency: Differential impairment in patients with left versus right frontal lobe lesions. Archives of Clinical Neuropsychology, 9, 41-55.
83. *Ruff, R. M., Light, R. H., Parker, S. B., & Levin, H. S. (1996). Benton Controlled Oral Word Association Test: Reliability and updated norms. Archives of Clinical Neuropsychology, 11(4), 329-338.
84. *Ryan, L., Clark, C. M., Klonoff, H., & Paty, D. (1993). Models of cognitive deficit and statistical hypotheses: Multiple sclerosis, an example. Journal of Clinical and Experimental Neuropsychology, 15(4), 563-577.
85. *Salthouse, T. A., Fristoe, N. M., & Rhee, S. H. (1996). How localized are age-related effects on neuropsychological measures? Neuropsychology, 10(2), 272-285.
86. *Saxton, J., Munro, C. A., Butters, M.A., Schramke, C., & McNeil, M. A. (2000). Alcohol, dementia, and Alzheimer's disease: Comparison of neuropsychological profiles. Journal of Geriatric Psychiatry and Neurology, 13, 141-149.
87. Saykin, A. J., Gur, R. C., Gur, R. E., Shtasel, D. L., Flanner, K. A., Mozley, L. H., Malamut, B., Watson, B., & Mozley, P. D. (1995). Normative neuropsychological test performance: Effects of age, education, gender and ethnicity. Applied Neuropsychology, 2, 79-88.
88. *Selnes, O. A., Jacobson, L., Machado, A. M., Becker, J. T., Wesch, J., Millder, E. N., Visscher, B., & McArthur, J. C. (1991). Normative data for a brief neuropsychological screening battery. Perceptual and Motor Skills, 73, 539-550.
89. *Simkins-Bullock, J., Brown, G. G., Greiffenstein, M., Malik, G. M., & McGillicuddy, J. (1994). Neuropsychological correlates of short-term memory distractor tasks among patients with surgical repair of anterior communicating artery aneurysms. Neuropsychology, 8(2), 246-254.
90. *Simon, S. L., Domier, C., Carnell, J., Brethen, P., Rawson, R., & Ling, W. (2000). Cognitive impairment in individuals currently using methamphetamine. The American Journal on Addictions, 9, 222-231.
91. Soukoup, V. M., Ingram, F., Grady, J. J., & Schiess, M. C. (1998). Trail Making Test: Issues in normative data selection. Applied Neuropsychology, 5(2), 65-73.
92. *Spica, D. M. (1995). Use of executive control in accessing episodic and semantic memory in patients with Alzheimer's dementia (Doctoral dissertation, Michigan State University, 1995). Dissertation Abstracts International, 56(3-B), 1711.
93. Spreen, O., & Strauss, E. (1998). A compendium of neuropsychological tests: Administration, norms and commentary (2nd ed.). New York: Oxford University Press.
94. *Stowe, M. T. (1996). Executive function in patients with sickle cell disease (Doctoral dissertation, Yeshiva University, 1995). Dissertation Abstracts International, 56(10-B), 5821.
95. *Sumerall, S. W., Timmons, P. L., James, A. L., Ewing, M. J. M., & Oehlert, M. E. (1997). Expanded norms for the Controlled Oral Word Association Test. Journal of Clinical Psychology, 53(5), 517-521.
96. *Suter, P. J. M. (1997). Interrelationships among four tests of frontal lobe-mediated cognitive abilities: An attempt to clarify their differences by reference to the hemispheric distribution of attention (Doctoral dissertation, University of Toledo, 1996). Dissertation Abstracts International, 57(11-B), 7238.
97. *Svetina, C., Barr, W. B., Rastogi, R., & Hilton, E. (1999). The neuropsychological examination of naming in Lyme borreoliosis. Applied Neuropsychology, 6(1), 33-38.
98. *Thomason, C. K. (1997). Frontal-lobe mediated word retrieval in Parkinson's disease (Doctoral dissertation, Texas Tech University). Dissertation Abstracts International, 57(11-B), 7269.
99. *Tombaugh, T. N., Kozak, J., & Rees, L. (1999). Normative data stratified by age and education for two measures of verbal fluency: FAS and Animal Naming. Archives of Clinical Neuropsychology, 14(2), 167-177.
100. *Tomer, R., & Levin, B. E. (1993). Differential effects of aging on two verbal fluency tasks. Perceptual and Motor Skills, 76, 465-466.
101. *Troyer, A. K., Moscovitch, M., & Winocur, G. (1997). Clustering and switching as two components of verbal fluency: Evidence from younger and older healthy adults. Neuropsychology, 11(1), 138-146.
102. *Troyer, A. K., Moscovitch, M., Winocur, G., Leach, L., & Freedman, M. (1998). Clustering and switching on verbal fluency tests in Alzheimer's and Parkinson's disease. Journal of the International Neuropsychological Society, 4, 137-143.
103. *Vasudev, L. (2000). Executive function in high functioning individuals with age-associated memory impairment or Alzheimer's disease (Doctoral dissertation, University of Ottawa, 2000). Dissertation Abstracts International, 61(4-B), 2227.
104. Walsh, K., & Darby, D. (1999). Neuropsychology: A clinical approach (4th ed.). Edinburgh, UK: Churchill Livingston.
105. *Westervelt, H. K. (2000). Neuropsychological functioning in chronic Lyme disease: The role of mental effort (Doctoral dissertation, University at Albany, State University of New York, 1999). Dissertation Abstracts International, 60(8-B), 4259.
106. *White, D. A., Taylor, M. J., Butters, N., Mack, C., Salmon, D. P., Peavy, G., Ryan, L., Heaton, R. K., Atkinson, J. H., Chandler, J. L., Grant, I., and the HNRC Group. (1997). Memory for verbal information in individuals with HIV-associated dementia complex. Journal of Clinical and Experimental Neuropsychology, 19(3), 357-366.
107. *Woods, S. P., & Troster, A. I. (2003). Prodromal frontal/executive dysfunction predicts incident dementia in Parkinson's disease. Journal of the International Neuropsychological Society, 9, 17-24.
108. *Yuspeh, R. L. (1994). Polysubstance abuse and its effects on frontal lobe functioning (Doctoral dissertation, California School of Professional Psychology, 1993). Dissertation Abstracts International, 55(3-13), 1199.
109. *Zakzanis, K. K., Troyer, A. K., Rich, J. B., & Heinrichs, W. (2000). Component analysis of verbal fluency in patients with schizophrenia. Neuropsychiatry, Neuropsychology, and Behavioral Neurology, 13(4), 239-245.
110. *Zec, R. F., Landreth, E. S., Fritz, S., Grames, E., Hasara, A., & Fraizer, W., et al. (1999). A comparison of phonemic, semantic, and alternating word fluency in Parkinson's disease. Archives of Clinical Neuropsychology, 14(3), 255-264.