The ecological validity of tests of executive function.
Ninety-two mixed etiology neurological patients and 216 control participants were assessed on a range of neuropsychological tests, including 10 neuropsychological measures of executive function derived from 6 different tests. People who knew the patients well (relatives or carers) completed a questionnaire about the patient's dysexecutive problems in everyday life, and this paper reports the extent to which the tests predicted the patients' everyday life problems. All of the tests were significantly predictive of at least some of the behavioral and cognitive deficits reported by patients' carers. However, factor analysis of the patients' dysexecutive symptoms suggested a fractionation of the dysexecutive syndrome, with neuropsychological tests loading differentially on 3 underlying cognitive factors (Inhibition, Intentionality, and Executive Memory), supporting the conclusions that different tests measure different cognitive processes, and that there may be limits to the fractionation of the executive system.
Psychology Department, University College London, U.K. p.burgess@psychol.ucl.ac.uk
P W
PW
Burgess
N
N
Alderman
J
J
Evans
H
H
Emslie
B A
BA
Wilson
D000328:Adult; D001927:Brain Diseases / Q000503:physiopathology; D003072:Cognition Disorders / Q000175:diagnosis* / Q000503:physiopathology; D005625:Frontal Lobe / Q000503:physiopathology*; D006801:Humans; D001523:Mental Disorders / Q000175:diagnosis* / Q000503:physiopathology; D009483:Neuropsychological Tests; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D013577:Syndrome