Incidence and Prevalence

Signs and Symptoms


Roles and Responsibilities





Aguirre, E., Woods, R. T., Spector, A., & Orrell, M. (2013). Cognitive stimulation for dementia: A systematic review of the evidence of effectiveness from randomized controlled trials. Ageing Research Reviews, 12, 253-262. doi:10.1016/j.arr.2012.07.001.

Alagiakrishnan, K., Bhanji, R. A., & Kurian, M. (2012). Evaluation and management of oropharyngeal dysphagia in different types of dementia: A systematic review. Archives of Gerontology and Geriatrics, 56, 1-9. doi:10.1016/j.archger.2012.04.011.

Albert, M. S., DeKosky, S. T., Dickson, D., Dubois, B., Feldman, H., Fox, N. C., … Phelps, C. H. (2011). The diagnosis of mild cognitive impairment due to Alzheimer's disease: Recommendations from the National Institute on Aging-Alzheimer's Association workgroups on diagnostic guidelines for Alzheimer's disease. Alzheimer's & Dementia, 7(3), 270-279.

Amieva, H., Jacqmin-Gadda, H., Orgogozo, J. M., Le Carret, N., Helmer, C., Letenneur, L., ... Dartigues, J. F. (2005). The 9 year cognitive decline before dementia of the Alzheimer type: A prospective population-based study. Brain, 128(5), 1093-1101.

American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed., text rev.). Washington, DC: Author.

American Speech-Language-Hearing Association. (2007). Scope of practice in speech-language pathology [Scope of practice]. Available from

American Speech-Language-Hearing Association. (2010). Code of ethics [Ethics]. Available from

American Speech-Language-Hearing Association. (n.d.). End-of-life issues in speech-language pathology. Retrieved from

Appels, B. A., & Scherder, E. (2010). The diagnostic accuracy of dementia-screening instruments with an administration time of 10 to 45 minutes for use in secondary care: A systematic review. American Journal of Alzheimer's Disease & Other Dementias, 25, 301-316.

Bahar-Fuchs, A., Clare., L., & Woods (2013). Cognitive Training and Cognitive Rehabilitation for Mild to Moderate Alzheimer's Disease and Vascular Dementia. Cochrane Database of Systematic Reviews (6), CD003260.

Bates, J., Boote, J., & Beverley, C. (2004). Psychosocial interventions for people with a milder dementing illness: A systematic review. Journal of Advanced Nursing, 45, 644-658.

Bayles, K. A., Kim, E., Chapman, S. B., Zientz, J., Rackley, A., Mahendra, N., ... Cleary, S. J. (2006). Evidence-based practice recommendations for working with individuals with dementia: Simulated presence therapy. Journal of Medical Speech Language Pathology, 14(3), xiii.

Bayles, K. A., & Tomoeda, C. K. (1993). Arizona Battery for Communication Disorders of Dementia. Austin, TX: PRO-ED.

Bayles, K. A., & Tomoeda, C. K. (2007). Cognitive-communication disorders of dementia. San Diego, CA: Plural.

Bennett, D. A., Schneider, J. A., Arvanitakis, Z., Kelly, J. F., Aggarwal, N. T., Shah, R. C., & Wilson, R. S. (2006). Neuropathology of older persons without cognitive impairment from two community-based studies. Neurology, 66(12), 1837-1844.

Bharucha, A. J., Anand, V., Forlizzi, J., Dew, M. A., Reynolds, C. F., III, Stevens, S., & Wactlar, H. (2009). Intelligent assistive technology applications to dementia care: Current capabilities, limitations, and future challenges. The American Journal of Geriatric Psychiatry, 17(2), 88-104.

Bialystok, E., Craik, F., & Freedman, M. (2007). Bilingualism as a protection against the onset of symptoms of dementia. Neuropsychologia, 45(2), 459--464.

Bourgeois, M. S., & Hickey, E. M. (2009). Dementia: From diagnosis to management-a functional approach. New York, NY: Psychological Press.

Buettner, L. L., Yu, F., & Burgener, S. C. (2010). Evidence supporting technology-based interventions for people with early-stage Alzheimer's disease. Journal of Gerontological Nursing, 36(10), 15-19.

Burkhalter, C. L., Allen, R. S., Skaar, D. C., Crittenden, J., & Burgio, L. D. (2009). Examining the effectiveness of traditional audiological assessments for nursing home residents with dementia-related behaviors. Journal of the American Academy of Audiology, 20, 529-538.

Brush, J., Sanford, J., Fleder, H., Bruce, C., & Calkins, M. (2011). Evaluating and modifying the communication environment for people with dementia. Perspectives on Gerontology, 16(2), 32-40.

Caltagirone, C., Bianchetti, A., Di Luca, M., Mecocci, P., Padovani, A., Pirfo, E., … Musicco, M. (2005). Guidelines for the treatment of Alzheimer's disease from the Italian Association of Psychogeriatrics. Drugs & Aging, 22, 1-26.

Christensen, K., Thinggaard, M., Oksuzyan, A., Steenstrup, T., Andersen-Ranberg, K., Jeune, B., … Vaupel, J. (2013). Physical and cognitive functioning of people older than 90 years: A comparison of two Danish cohorts born 10 years apart. The Lancet. Advanced online publication. doi:10.1016/S0140-6736(13)60777-1.

Cooper, C., Mukadam, N., Katona, C., Lyketsos, C. G., Ames, D., Rabins, P., … Livingston, G. (2012). Systematic review of the effectiveness of non-pharmacological interventions to improve quality of life of people with dementia. International Psychogeriatrics, 24, 856-870. doi:10.1017/S1041610211002614.

Craik, F., Bialystok, E., & Freedman, M. (2010). Delaying the onset of Alzheimer disease. Bilingualism as a form of cognitive reserve. Neurology, 75, 1726-1729.

Easterling ,C. S., & Robbins, E. (2008). Dementia and dysphagia. Geriatric Nursing, 29(4), 275-285. doi:10.1016/j.gerinurse.2007.10.015.

Egan, M., Bérubé, D., Racine, G., Leonard, C., & Rochon, E. (2010). Methods to enhance verbal communication between individuals with Alzheimer's disease and their formal and informal caregivers: A systematic review. International Journal of Alzheimer's Disease. doi:10.4061/2010/906818.

Eggenberger, E., Heimerl, K., & Bennett, M.I. (2013). Communication skills training in dementia care: A systematic review of effectiveness, training content, and didactic methods in different care settings. International Psychogeriatrics, 25, 345-358. doi:10.1017/S1041610212001664.

Ettema, T. P., Dröes, R., de Lange, J., Mellenbergh, G. J., & Ribbe, M. W. (2005). A review of quality of life instruments used in dementia. Quality of Life Research, 14, 675-686.

Fadil, H., Borazanci, A., Ait Ben Haddou, E., Yahyaoui, M., Korniychuk, E., Jaffe, S. L., & Minagar, A. (2009). Early onset dementia. International Review of Neurobiology, 84, 245-262.

Feil, N. (1982). Validation: The Feil method. How to help the disorientated old-old. Cleveland, OH: Feil Productions.

Friedland, D., & Miller, N. (1999). Language mixing in bilingual speakers with Alzheimer's dementia: A conversation analysis approach. Aphasiology, 13, 427-444.

Gallacher, J., Ilubaera, V., Ben-Shlomo, Y., Bayer, A., Fish, M., Babisch, W., & Elwood, P. (2012). Auditory threshold, phonologic demand, and incident dementia. Neurology, 79(15), 1583-1590.

Hanson, L. C., Ersek, M., Gilliam, R., & Carey, T. S. (2011). Oral feeding options for people with dementia: A systematic review. The American Geriatrics Society, 59, 463-472. doi:10.1111/j.1532-5415.2011.03320.x.

Harris, J. L. (1997). Reminiscence: A culturally and developmentally appropriate language intervention for older adults. American Journal of Speech-Language Pathology, 6(3), 19-26.

Hart, V. R., Gallagher-Thompson, D., Davies, H. D., DiMinno, M., & Lessin, P. J. (1996). Strategies for increasing participation of ethnic minorities in Alzheimer's disease diagnostic centers: A multifaceted approach in California. Gerontologist, 36, 259-262.

Hegde, M. N. (2006). A coursebook on aphasia and other neurogenic language disorders (3rd ed.). Clifton Park, NY: Delmar.

Hebert, L. E., Scherr, P. A., Bienias, J. L., Bennett, D. A., & Evans, D. A. (2003). Alzheimer disease in the US population: Prevalence estimates using the 2000 census. Archives of Neurology, 60(8), 1119-1122.

Heron, M. P., Hoyert, D. L., Murphy, S. L., Xu, J. Q., Kochanek, K. D., & Tejada-Vera, B. (2009). Deaths: Final data for 2006.National Vital Statistics Reports, 57(14). Hyattsville, MD: U.S. Department of Health and Human Services. National Center for Health Statistics.

Hinton, W. L., Fox, K., & Levkoff, S. (1999). Introduction: Exploring the relationship among aging, ethnicity, and family dementia caregiving. Culture, Medicine and Psychiatry, 23, 403-413.

Hopper, T., Bourgeois, M., Pimentel, J., Qualls, C. D., Hickey, E., Frymark, T., & Schooling, T. (2013). An evidence-based systematic review on cognitive interventions for individuals with dementia. American Journal of Speech-Language Pathology, 22, 126-145. doi:10.1044/1058-0360(2012/11-0137).

Horner, J, Alberts, M. J., Dawson, D. V., & Cook, G. M. (1994). Swallowing in Alzheimer's disease. Alzheimer's Disease and Associated Disorders, 8(3), 177-189.

Jefferies, K., & Agrawal, N. (2009). Early-onset dementia. Advances in Psychiatric Treatment, 15(5), 380-388.

Johnson, A. F., & Jacobson, B. H. (2007). Medical speech-language pathology: A practitioner ́s guide-Second Edition. New York, NY: Thieme.

Joint Commission on Accreditation of Healthcare Organizations. (2004). Comprehensive accreditation manual for hospitals: The official handbook . Oakbrook Terrace, IL: Author.

Kansagara, D., & Freeman, M. (2010). A systematic evidence review of the signs and symptoms of dementia and brief cognitive tests available in Veterans Affairs (VA-ESP Project #05-225). Retrieved from

Kean, J., & Locke, D. E. (2008). Neuropsychological consequences of cancer and cancer treatment. Perspectives on Neurophysiology and Neurogenic Speech and Language Disorders, 18(4), 144-151.

Key-DeLyria, S. (2013). What are the methods for diagnosing MCI? Neurophysiology and Neurogenic Speech and Language Disorders, 23, 14-22.

Kurz, A. F., Leucht, S., & Lautenschlager, N. T. (2011). The clinical significance of cognition-focused interventions for cognitively impaired older adults: A systematic review of randomized controlled trials. International Psychogeriatrics, 23, 1364-1375. doi:10.1017/S1041610211001001.

Landes, T. L. (1999). Ethical issues involved in patients' rights to refuse artificially administered nutrition and hydration and implications for the speech-language pathologist. American Journal of Speech-Language Pathology, 8, 109-117.

Lewsen, B. J., & Cashman, M. (1997). Hearing aids and assistive listening devices in long-term care. Canadian Journal of Speech-Language Pathology and Audiology, 21(3), 149-152.

Lin, F. R., Metter, E. J., O'Brien, R. J., Resnick, S. M., Zondermand, A. B., & Ferrucci, L. (2011). Hearing loss and incident dementia. Archives of Neurology, 68(2), 214-220.

Lischka, A. R., Mendelsohn, M., Overend, T., & Forbes, D. (2012). A systematic review of screening tools for predicting the development of dementia. Canadian Journal on Aging, 31, 295-311. doi:10.1017/S0714980812000220.

Lovestone, S. (1999). Early diagnosis and the clinical genetics of Alzheimer's disease. Journal of Neurology, 246(2), 69-72.

Low, L. F., Draper, B., Cheng, A., Cruysmans, B., Hayward-Wright, N., Jeon, Y. H., … Brodaty, H. (2009). Future research on dementia relating to culturally and linguistically diverse communities. Australasian Journal on Ageing, 28(3), 144-148.

Mahendra, N., & Hopper, T. (2013). Dementia and related cognitive disorders. In I. Papathanasiou, P. Coppens, & C. Potagas (Eds.), Aphasia and related neurogenic communication disorders (pp. 397-430). Burlington, MA: Jones & Bartlett Learning, LLC.

Manly, J. J., & Mayeux, R. (2004). Ethnic differences in dementia and Alzheimer's disease. In N.B. Anderson, R. A. Bulatao, & B. Cohen (Eds.), Critical perspectives on racial and ethnic differences in health in late life. Washington, DC: National Academies Press.

Matthews, F., Arthur, A., Barnes, L., Bond, J., Jagger, C., Robinson, L., & Brayne, C. (2013). A two-decade comparison of prevalence of dementia in individuals aged 65 years and older from three geographical areas of England: Results of the Cognitive Function and Ageing Study I and II. The Lancet. Advance online publication. Retrieved from

McMurtray, A., Clark, D. G., Christine, D., & Mendez, M. F. (2006). Early-onset dementia: Frequency and causes compared to late-onset dementia. Dementia and Geriatric Cognitive Disorders, 21(2), 59-64.

Mendez, M. F., Perryman, K. M., Pontón, M. O., & Cummings, J. L. (1999). Bilingualism and dementia. The Journal of Neuropsychiatry and Clinical Neurosciences, 11(3), 411-412.

Mitchell, A. J., & Malladi, S. (2010). Screening and case-finding tools for the detection of dementia. Part I: Evidence-based meta-analysis of multidomain tests. American Journal of Geriatric Psychiatry, 18, 759-782.

Montessori, M. (2008). The Montessori method. Radford, VA: Wilder Publications, LLC.

National Institute for Health and Clinical Excellence (NICE). (2006). Dementia: The NICE-SCIE guideline on supporting people with dementia and their careers in health and social care. London, UK: NICE.

National Institute on Deafness and Other Communication Disorders (NIDCD). (2010). Quick statistics. Retrieved from

National Institute of Neurological Disorders and Stroke (NINDS). (2013). Retrieved from

Obuchi, C., Harashima, T., & Shiroma, M. (2011). Age-related changes in auditory and cognitive abilities in elderly persons with hearing aids fitted and the initial stages of hearing loss. Audiology Research, 1(e1), 40­41.

Omnibus Budget Reconciliation Act, Pub. L. N. 100-203 § 483.15 Stat. 161-163.

Palmer, C. V., Adams, S. W., Bourgeouis, M., Durrant, J., & Rossie, M. (1999). Reduction in caregiver-identified problem behaviors in patients with Alzheimer disease post hearing aid fitting. Journal of Speech, Language, and Hearing Research, 42, 312-328.

Parker, J., Young, A., & Rogers, K. (2010). My Mum's story: A deaf daughter discusses her Deaf mother's experience of dementia. Dementia, 9, 5-20.

Peelle, J. E., Troiani, V., Grossman, M., & Wingfield, A. (2011). Hearing loss in older adults affects neural systems supporting speech comprehension. The Journal of Neuroscience, 31(35), 12638-12643.

Pichora-Fuller, M. K., Dupuis, K., Reed, M., & Lemke, U. (2013). Helping older people with cognitive decline communicate: Hearing aids as part of a broader rehabilitation approach. Seminars in Hearing 34(4), 308-330.

Pinto, E. & Peters, E. (2009). Literature review of the Clock Drawing Test as a tool for cognitive screening. Dementia and Geriatric Cognitive Disorders, 27, 201-213. doi:10.1159/000203344.

Piras, F., Borella, E., Incoccia, C., & Carlesimo, G.A. (2011). Evidence-based practice recommendations for memory rehabilitation. European Journal of Physical and Rehabilitation Medicine, 47, 149-175.

Plassman, B. L., Langa, K. M., Fisher, G. G., Heeringa, S. G., Weir, D. R., Ofstedal, M. B., ... Wallace, R. B. (2007). Prevalence of dementia in the United States: The aging, demographics, and memory study. Neuroepidemiology, 29(1-2), 125-132.

Prince, M., Bryce, R., Albanese, E., Wimo, A., Ribeiro, W., & Ferri, C. P. (2013). The global prevalence of dementia: A systematic review and metaanalysis. Alzheimer's Dementia, 9(1), 63-75.

Qualls, C. (2005). Neurobiology of normal aging, mild cognitive impairment, and Alzheimer's disease: A tutorial. Gerontology,10, 2-7.

Rabin, A., Paré, N., Saykin, A. J., Brown, M. J., Wishart, H. A., Flashman, L. A., & Santulli, R. (2009). Differential memory test sensitivity for diagnosing amnestic mild cognitive impairment and predicting conversion to Alzheimer's disease. Neuropsychology, Development, and Cognition, Section B, Aging, Neuropsychology and Cognition, 16 (3), 357-376.

Rabins, P. V., Blacker, D., Rovner, B. W., Rummans, T., Schneider, L. S., Tariot, P. N., & Blass, D. M. (2007). American Psychiatric Association practice guideline for the treatment of patients with Alzheimer's disease and other dementias (2nd ed.). American Journal of Psychiatry, 164, 5-56.

Satz, P. (1993). Brain reserve capacity on symptom onset after brain injury: A formulation and review of evidence for threshold theory. Neuropsychology, 7(3), 273-295.

Sampson, E. L., Candy, B., & Jones, L. (2009). Enteral tube feeding for older people with advanced dementia. Cochrane Database of Systematic Reviews, Issue 2 (Article No. CD007209). doi:10.1002/14651858.CD007209.pub2.

Schulz, R., & Beach, S. R. (1999). Caregiving as a risk factor for mortality. The Journal of the American Medical Association, 282(23), 2215-2219.

Shaw, W. S., Patterson, T. L., Semple, S. J., Ho, S., Irwin, M. R., Hauger, R. L., & Grant, I. (1997). Longitudinal analysis of multiple indicators of health decline among spousal caregivers. Annals of Behavioral Medicine, 19(2), 101-109.

Sitzer, D. I., Twamley, E. W., & Jeste, D. V. (2006). Cognitive training in Alzheimer's disease: A meta-analysis of the literature. Acta Psychiatrica Scandinavica, 114, 75-90. doi:10.1111/j.1600-0447.2006.00789.x.

Stern, Y. (2002). What is cognitive reserve? Theory and research application of the reserve concept. Journal of the International Neuropsychological Society, 8(3), 448-460.

Stern, Y. (2003). The concept of cognitive reserve: A catalyst for research. Journal of Clinical and Experimental Neuropsychology, 25, 589-593.

Stern, Y. (2009). Cognitive reserve. Neuropsychologia, 47(10), 2015-2028.

Subramaniam, P., & Woods, B. (2012). The impact of individual reminiscence therapy for people with dementia: Systematic review. Expert Review of Neurotherapeutics, 12, 545-555. doi:10.1586/ERN.12.35.

Takayama, Y. (2010). A delayed recall battery as a sensitive screening for mild cognitive impairment: Follow-up study of memory clinic patients after 10 years. Journal of Medical and Dental Sciences, 57, 177-184.

Taylor-Goh, S. (2005). 5.10 Disorders of mental health and dementia. In Royal College of Speech & Language Therapists (RCSLT) Clinical Guidelines (pp. 83-91). Bicester, UK: Speechmark Publishing.

Tilly, J., & Reed, P. (Eds.). (2006). Dementia care practice recommendations for assisted living residences and nursing homes: Phases 1 and 2. Retrieved from

Tilly, J., & Reed, P. (Eds.). (2007). Dementia care practice recommendations for assisted living residences and nursing homes: Phase 3 end-of-life care. Retrieved from

U.S. Preventive Services Task Force (USPSTF). (2003). Screening for dementia (AHRQ Publication No. 03-520A). Retrieved from

Volkert, D., Berner, Y. N., Berry, E., Cederholdm, T., Coti Bertrand, P., Milne, A., … Lochs, H. (2006). ESPEN guidelines on enteral nutrition: Geriatrics. Clinical Nutrition, 25, 330-360. doi:10.1016/j.clnu.2006.01.012.

Voyzey, G. A. (2010). Feeding and swallowing strategies for the individual with dementia. Perspectives on Gerontology, 15(2), 48-53. doi:10.1044/gero15.2.48.

Wechsler, D. (1999). Wechsler Memory Scale-Third Edition. San Antonio, TX: Harcourt Assessment.

Williams, S. W., & Harvey, I. S. (2013). Culture, race, and SES: Application to end of life decision making for African American caregivers. Perspectives on Gerontology, 18(2), 69-76.

Whitlatch, C., & Feinberg,L. (2003). Planning for the future together in culturally diverse families: Making everyday care decisions. Alzheimer's Care Quarterly, 4(1), 50-61.

Winslow, B., & Flaskerud, J. (2009). Deciding to place a relative in long-term care: "We don't really do that." Issues in Mental Health Nursing, 30, 197-198.

Woods, B., Aguirre, E., Spector, A. E., & Orrell, M. (2012). Cognitive stimulation to improve functioning in people with dementia. Cochrane Database of Systematic Reviews, Issue 2 (Article No. CD005562). doi:0.1002/14651858.CD005562.pub2.

World Health Organization. (2001). International Classification of Functioning, Disability and Health. Geneva, Switzerland: Author.

Yuill, N., & Hollis, V. (2011). A systematic review of cognitive stimulation therapy for older adults with mild to moderate dementia: An occupational therapy perspective. Occupational Therapy International, 18, 163-186. doi:10.1002/oti.315.

Zientz, J., Rackley, A., Chapman, S. B., Hopper, T., & Mahendra, N. K. E. (2007). Evidence-based practice recommendations for dementia: Educating caregivers about Alzheimer's disease and training communication strategies. Journal of Medical Speech-Language Pathology, 15(1), 53-64.

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