Age and verbal fluency: The mediating effect of speed of processing

Canadian Geriatrics Journal

Volumn 14, Issue 3, 2011, Pages 66-72

  Elgamal, Safa A ^a,b   Roy, Eric A ^a,b   Sharratt, Michael T ^a,b  

^a UNIVERSITY OF WATERLOO   (Canada)

^b Dept Kinesiology   (Canada)

Author keywords

Aging; Cognitive function; Premorbid IQ; Speed of processing; Verbal fluency; Verbal knowledge

Indexed keywords

ADULT; AGING; CLINICAL ARTICLE; CONTROLLED ORAL WORD ASSOCIATION TEST; CONTROLLED STUDY; FEMALE; HUMAN; INTELLIGENCE QUOTIENT; MALE; MIDDLE AGED; NATIONAL ADULT READING TEST; VELOCITY;

EID: 84887498622     PISSN: None     EISSN: 19258348     Source Type: Journal    
DOI: 10.5770/cgj.v14i3.17     Document Type: Article

References (28)

1. Clark LJ, Gatz M, Zheng L, et al. Longitudinal verbal fluency in normal aging, preclinical, and prevalent Alzheimer's disease. Am J Alzheimers Dis Other Demen 2009; 24:461-8.
2. Crossley M, D'Arcy C, Rawson NS. Letter and category fluency in community-dwelling Canadian seniors: a comparison of normal participants to those with dementia of the Alzheimer or vascular type. J Clin Exp Neuropsychol 1997; 19:52-62.
3. Tomer R, Levin BE. Differential effects of aging on two verbal fluency tasks. Percept Mot Skills 1993; 76:465-6.
4. Bolla KI, Gray S, Resnick SM, et al. Category and letter fluency in highly educated older adults. Clin Neuropsychol 1998; 12:330-8.
5. Bolla KI, Lindgren KN, Bonaccorsy C, et al. Predictors of verbal fluency (FAS) in the healthy elderly. J Clin Psychol 1990; 46:623-8.
6. Laws KR, Duncan A, Gale TM. 'Normal' semantic-phonemic fluency discrepancy in Alzheimer's disease? A meta-analytic study. Cortex 2010; 46:595-601.
7. Salthouse TA. The processing-speed theory of adult age differences in cognition. Psychol Rev 1996; 103:403-28.
8. Bashore TR, van der Molen MW, Ridderinkhof KR, et al. Is the age-complexity effect mediated by reductions in a general processing resource? Biol Psychol 1997; 45:263-82.
9. van den Heuvel DM, ten Dam VH, de Craen AJ, et al. Increase in periventricular white matter hyperintensities parallels decline in mental processing speed in a non-demented elderly population. J Neurol Neurosurg Psychiatry 2006; 77:149-53.
10. Bugg JM, Zook NA, De Losh EL, et al. Age differences in fluid intelligence: cont ribut ions of gener al slowing and front al decline. Brain Cogn 2006; 62:9-16.
11. Clay OJ, Edwards JD, Ross LA, et al. Visual function and cognitive speed of processing mediate age-related decline in memory span and fluid intelligence. J Aging Health 2009; 21:547-66.
12. Bryan J, Luszcz MA, Crawford JR. Verbal knowledge and speed of information processing as mediators of age differences in verbal fluency performance among older adults. Psychol Aging 1997; 12:473-8.
13. Salthouse TA, Coon VE. Influence of task-specific processing speed on age differences in memory. J Gerontol 1993; 48:P245-55.
14. Salthouse TA. Influence of processing speed on adult age differences in working memory. Acta Psychol (Amst) 1992; 79:155-70.
15. Nelson HE. National Adult Reading Test (NART): For the Assessment of Premorbid Intelligence in Patients With Dementia. Windsor, UK: NFER-Nelson; 1982.
16. Bright P, Jaldow E, Kopelman MD. The National Adult Reading Test as a measure of premorbid intelligence: a comparison with estimates derived from demographic variables. J Int Neuropsychol Soc 2002; 8:847-54.
17. Reitan RM. Trail Making Test: Manual for Administration and Scoring. South Tucson, AZ: Reitan Neuropsychology Laboratory; 1992.
18. Arbuthnott K, Frank J. Trail making test, part B as a measure of executive control: validation using a set-switching paradigm. J Clin Exp Neuropsychol 2000; 22:518-28.
19. Sanchez-Cubillo I, Perianez JA, Adrover-Roig D, et al. Construct validity of the Trail Making Test: role of task-switching, working memory, inhibition/interference control, and visuo-motor abilities. J Int Neuropsychol Soc 2009; 15:438-50.
20. Bowie CR, Harvey PD. Administration and interpretation of Trail Making Test. Nat Protoc 2006; 1:2277-81.
21. González-Blanch C, Alvarez-Jiménez M, Rodríguez-Sánchez JM, et al. Cognitive functioning in the early course of first-episode schizophrenia spectrum disorders: timing and patterns. Eur Arch Psychiatry Clin Neurosci 2006; 256:364-71.
22. Schear JM, Sato SD. Effects of visual acuity and visual motor speed and dexterity on cognitive test performance. Arch Clin Neuropsychol 1989; 4:25-32.
23. Kowalczyk A, McDonald S, Cranney J, et al. Cognitive flexibility in the normal elderly and in persons with dementia as measured by the written and oral Trail Making Tests. Brain Impair 2001; 2:11-21.
24. Wechsler D. Wechsler Adult Intelligence Scale Revised. San Antonio, TX: The Psychological Corporation; 1981.
25. Benton AL, Hamsher K. Multilingual Aphasic Examination: Manual of Instructions. Iowa City, IA: AJA Associates; 1989.
26. Uttl B. North American Adult Reading Test: age norms, reliability, and validity. J Clin Exp Neuropsychol 2002; 24: 1123-37.
27. Rodriguez-Aranda C. Reduced writing and reading speed and age-related changes in verbal fluency tasks. Clin Neuropsychol 2003; 17:203-15.
28. McDowd J, Hoffman L, Rozek E, et al. Understanding verbal fluency in healthy aging, Alzheimer's disease, and Parkinson's disease. Neuropsychology 2011; 25:210-25.