Approximate Quantification in Young, Healthy Older Adults', and Alzheimer Patients

Autor/inn/en	Gandini, Delphine; Lemaire, Patrick; Michel, Bernard Francois
Titel	Approximate Quantification in Young, Healthy Older Adults', and Alzheimer Patients
Quelle	In: Brain and Cognition, 70 (2009) 1, S.53-61 (9 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0278-2626
DOI	10.1016/j.bandc.2008.12.004
Schlagwörter	Alzheimers Disease; Dementia; Young Adults; Patients; Older Adults; Diseases + Suchen Sie Ihr Suchwort? Demenz; Young adult; Junger Erwachsener; Patient; Älterer Erwachsener; Disease; Krankheit
Abstract	Forty young adults, 40 healthy older adults, and 39 probable AD patients were asked to estimate small (e.g., 25) and large (e.g., 60) collections of dots in a choice condition and in two no-choice conditions. Participants could choose between benchmark and anchoring strategies on each collection of dots in the choice condition and were required to use either benchmark or anchoring on all configurations in the no-choice conditions (one per strategy). The benchmark strategy involves visual estimation processes whereas the anchoring strategy involves both enumeration and estimation processes. Results showed that strategy use was influenced by collection, participant, and strategy characteristics. Age-related and dementia-related differences were found in both strategy use and strategy execution. The findings have implications for our understanding of aging effects in approximate quantification, strategic variations in Alzheimer's patients, and sources of cognitive decline during early stages of Alzheimer's disease. (Contains 2 figures and 6 tables.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10