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dc.contributor.authorMoreno-Martinez, F.J.
dc.contributor.authorLaws, K.R.
dc.date.accessioned2011-02-08T11:42:29Z
dc.date.available2011-02-08T11:42:29Z
dc.date.issued2007
dc.identifier.citationMoreno-Martinez , F J & Laws , K R 2007 , ' An attenuation of the 'normal' category effect in patients with Alzheimer's disease : A review and bootstrap analysis ' , Brain and Cognition , vol. 63 , no. 2 , pp. 167-173 . https://doi.org/10.1016/j.bandc.2006.11.003
dc.identifier.issn0278-2626
dc.identifier.otherPURE: 191203
dc.identifier.otherPURE UUID: bb6f66d1-f1a7-4ad1-aa54-90fa34748890
dc.identifier.otherdspace: 2299/5311
dc.identifier.otherScopus: 34147176011
dc.identifier.urihttp://hdl.handle.net/2299/5311
dc.descriptionOriginal article can be found at: http://www.sciencedirect.com Copyright Elsevier [Full text of this article is not available in the UHRA]
dc.description.abstractThere is a consensus that Alzheimer’s disease (AD) impairs semantic information, with one of the first markers being anomia i.e. an impaired ability to name items. Doubts remain, however, about whether this naming impairment differentially affects items from the living and nonliving knowledge domains. Most studies have reported an impairment for naming living things (e.g. animals or plants), a minority have found an impairment for nonliving things (e.g. tools or vehicles), and some have found no category-specific effect. A survey of the literature reveals that this lack of agreement may reflect a failure to control for intrinsic variables (such as familiarity) and the problems associated with ceiling effects in the control data. Investigating picture naming in 32 AD patients and 34 elderly controls, we used bootstrap techniques to deal with the abnormal distributions in both groups. Our analyses revealed the previously reported impairment for naming living things in AD patients and that this persisted even when intrinsic variables were covaried; however, covarying control performance eliminated the significant category effect. Indeed, the within-group comparison of living and nonliving naming revealed a larger effect size for controls than patients. We conclude that the category effect in Alzheimer’s disease is no larger than is expected in the healthy brain and may even represent a small diminution of the normal profile.en
dc.language.isoeng
dc.relation.ispartofBrain and Cognition
dc.subjectAlzheimer’s disease
dc.subjectcategory-specificity
dc.subjectbootstrap
dc.subjectnuisance variables
dc.titleAn attenuation of the 'normal' category effect in patients with Alzheimer's disease : A review and bootstrap analysisen
dc.contributor.institutionDepartment of Psychology
dc.description.statusPeer reviewed
dcterms.dateAccepted2007
rioxxterms.versionofrecordhttps://doi.org/10.1016/j.bandc.2006.11.003
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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