Investigation of the single case in neuropsychology: confidence limits on the abnormality of test scores and test score differences

Neuropsychologia
J R Crawford, Paul H Garthwaite

Abstract

Neuropsychologists often need to estimate the abnormality of an individual patient's test score, or test score discrepancies, when the normative or control sample against which the patient is compared is modest in size. Crawford and Howell [The Clinical Neuropsychologist 12 (1998) 482] and Crawford et al. [Journal of Clinical and Experimental Neuropsychology 20 (1998) 898] presented methods for obtaining point estimates of the abnormality of test scores and test score discrepancies in this situation. In the present study, we extend this work by developing methods of setting confidence limits on the estimates of abnormality. Although these limits can be used with data from normative or control samples of any size, they will be most useful when the sample sizes are modest. We also develop a method for obtaining point estimates and confidence limits on the abnormality of a discrepancy between a patient's mean score on k-tests and a test entering into that mean. Computer programs that implement the formulae for the confidence limits (and point estimates) are described and made available.

References

May 1, 1993·The British Journal of Clinical Psychology·E Miller
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Aug 21, 2002·Child Neuropsychology : a Journal on Normal and Abnormal Development in Childhood and Adolescence·I S Baron
Apr 1, 1957·Journal of Clinical Psychology·R W PAYNE, H G JONES

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Citations

May 9, 2006·Experimental Brain Research·Nichola J RiceA David Milner
Mar 18, 2009·Experimental Brain Research·James DanckertCarol Broderick
May 5, 2009·Experimental Brain Research·Michael J BanissyJamie Ward
Apr 24, 2013·Experimental Brain Research·A SeddaG Bottini
Jul 9, 2013·Experimental Brain Research·Kathleen VancleefGlyn W Humphreys
Mar 20, 2008·Journal of Neurology·Caroline SchnakersSteven Laureys
Dec 9, 2009·Cognitive Processing·Liana PalermoCecilia Guariglia
Apr 9, 2008·Neuropsychology Review·Suncica Lah, Laurie Miller
Jul 31, 2013·The Cerebellum·Svenja BorchersMarc Himmelbach
Aug 15, 2006·Archives of Clinical Neuropsychology : the Official Journal of the National Academy of Neuropsychologists·C Richard ClarkEvian Gordon
Dec 19, 2006·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Christine BastinEric Salmon
Jan 24, 2004·Journal of the International Neuropsychological Society : JINS·John R CrawfordAnnalena Venneri
Apr 1, 2006·Journal of the International Neuropsychological Society : JINS·Sara MondiniPatrizia Bisiacchi
Oct 29, 2008·Journal of the International Neuropsychological Society : JINS·Ivana BuccioneGiovanni A Carlesimo
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Mar 25, 2010·Journal of the International Neuropsychological Society : JINS·Liana PalermoCecilia Guariglia
May 6, 2010·Journal of the International Neuropsychological Society : JINS·Evangelos ParaskevopoulosIsabelle Peretz
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Jun 23, 2004·Nature Neuroscience·Igor SchindlerA David Milner
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Apr 18, 2008·Cognitive Neuropsychology·Cristina RosazzaTim Shallice
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Apr 18, 2008·Cognitive Neuropsychology·Gitit KavéAnita Lev
Aug 7, 2009·Cognitive Neuropsychology·Laura Piccardi
Jun 23, 2009·Cognitive Neuropsychology·Chiharu NikiTakatsune Kumada
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Feb 4, 2010·Cognitive Neuropsychology·Mario A ParraSharon Abrahams
Oct 15, 2010·Cognitive Neuropsychology·Isabelle SoulièresLaurent Mottron
Jul 2, 2011·Cognitive Neuropsychology·John R CrawfordLiam T Wood

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