Maximizing the power of comparing single cases against a control sample: An argument, a program for making comparisons, and a worked example from the Pyramids and Palm Trees test

Cognitive Neuropsychology

Volumn 24, Issue 3, 2007, Pages 279-291

  Hulleman, Johan ^a   Humphreys, Glyn W ^b  

^a UNIVERSITY OF HULL   (United Kingdom)

^b UNIVERSITY OF BIRMINGHAM   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ANALYTICAL ERROR; ARTICLE; CASE CONTROL STUDY; CASE STUDY; CLINICAL RESEARCH; COMPUTER PROGRAM; INTERMETHOD COMPARISON; MONTE CARLO METHOD; NEUROPSYCHOLOGICAL TEST; PRIORITY JOURNAL; STATISTICAL ANALYSIS; STUDENT T TEST; TEST RETEST RELIABILITY;

CASE-CONTROL STUDIES; DIAGNOSIS, COMPUTER-ASSISTED; HUMANS; MODELS, THEORETICAL; NEUROPSYCHOLOGICAL TESTS; NEUROPSYCHOLOGY;

EID: 34247862103     PISSN: 02643294     EISSN: 14640627     Source Type: Journal    
DOI: 10.1080/02643290601181890     Document Type: Article

References (19)

1. Caramazza, A. (1986) On drawing inferences about the structure of normal cognitive systems from the analysis of patterns of impaired performance: The case for single-patient studies. Brain and Cognition, 5, pp. 41-66.
2. Caramazza, A. and McCloskey, M. (1988) The case for single-patient studies. Cognitive Neuropsychology, 5, pp. 517-528.
3. Coltheart, M. (2001) Assumptions and methods in cognitive neuropsychology. The handbook of cognitive neuropsychology, pp. 3-21. Psychology Press, Philadelphia, PA
4. Crawford, J. R. and Garthwaite, P. H. (2006) Methods of testing for a deficit in single case studies: Evaluation of statistical power by Monte Carlo simulation. Cognitive Neuropsychology, 23, pp. 877-904.
5. Crawford, J. R., Garthwaite, P. H., Azzalini, A., Howell, D. C. and Laws, K. R. (2006) Testing for a deficit in single-case studies: Effects of departures from normality. Neuropsychologia, 44, pp. 666-677.
6. Crawford, J. R., Garthwaite, P. H., Howell, D. C. and Gray, C. D. (2004) Inferential methods for comparing a single case with a control sample: Modified t tests versus Mycroft et al.'s (2002) modified ANOVA. Cognitive Neuropsychology, 21, pp. 750-755.
7. Crawford, J. R. and Howell, D. C. (1998) Comparing an individual's test score against norms derived from small samples. The Clinical Neuropsychologist, 12, pp. 482-486.
8. Duncan, J., Bundesen, C., Olson, A., Humphreys, G. W., Chavda, S. and Shibuya, H. (1999) Systematic analysis of deficits in visual attention. Journal of Experimental Psychology: General, 128, pp. 450-478.
9. Howard, D. and Patterson, K. E. (1992) The Pyramids and Palm Trees Test, Thames Valley Test Co, Bury St. Edmonds, UK
10. Huber, H. P. (1973) Psychometrische Einzelfalldiagnostik, Beltz, Weinheim, Germany
11. Humphreys, G. W. and Riddoch, M. J. (2003) A case series analysis of category-specific deficits of living things: The HIT account. Cognitive Neuropsychology, 20, pp. 263-306.
12. McCloskey, M. (1993) Theory and evidence in cognitive neuropsychology: A "radical" response to Robertson, Rafal, and Shimamura (1993). Journal of Experimental Psychology: Learning, Memory, and Cognition, 19, pp. 718-734.
13. Mitchell, D. C., Mycroft, R. H. and Kay, J. (2004) Comparing a single case to a control sample: Differences in distribution versus differences in means. Cognitive Neuropsychology, 21, pp. 756-760.
14. Moreno, M. A., Buchanan, L. and Van Orden, G. C. (2002) Variability in aphasic patients' response times. Brain and Cognition, 48, pp. 469-474.
15. Mycroft, R., Mitchell, D. C. and Kay, J. (2002) An evaluation of statistical procedures for comparing an individual's performance with that of a group of controls. Cognitive Neuropsychology, 19, pp. 291-299.
16. Press, W. H., Teukolsky, S. A., Vetterling, W. T. and Flannery, B. P. (1992) Numerical recipes in C. The art of scientific computing, Cambridge University Press, Cambridge, MA
17. Riddoch, M. J. and Humphreys, G. W. (1993) The Birmingham Object Recognition Battery (BORB), Lawrence Erlbaum Associates Ltd, London
18. Vallar, G. (2000) The methodological foundations of human neuropsychology: Studies in brain-damaged patients. Handbook of neuropsychology, 1, pp. 53-76. Elsevier, Amsterdam
19. Zubin, J. (1950) Symposium on statistics for the clinician. Journal of Clinical Psychology, 6, pp. 1-6.