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dc.contributor.authorSmith, Verity
dc.contributor.authorPinasco, Clara
dc.contributor.authorAchterberg, Jascha
dc.contributor.authorMitchell, Danny
dc.contributor.authorDas, Tilak
dc.contributor.authorRoca, Maria
dc.contributor.authorDuncan, John
dc.date.accessioned2021-12-11T00:31:30Z
dc.date.available2021-12-11T00:31:30Z
dc.date.issued2022-01
dc.identifier.issn0010-9452
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/331346
dc.description.abstractClassical executive tasks, such as Wisconsin card-sorting and verbal fluency, are widely used as tests of frontal lobe control functions. Since the pioneering work of Shallice and Burgess (1991), it has been known that complex, naturalistic tasks can capture deficits that are missed in these classical tests. Matching this finding, deficits in several classical tasks are predicted by loss of fluid intelligence, linked to damage in a specific cortical "multiple-demand" (MD) network, while deficits in a more naturalistic task are not. To expand on these previous results, we examined the effect of focal brain lesions on three new tests-a modification of the previously-used Hotel task, a new test of task switching after extended delays, and a test of decision-making in imagined real-life scenarios. As potential predictors of impairment we measured volume of damage to a priori MD and default mode (DMN) networks, as well as cortical damage outside these networks. Deficits in the three new tasks were substantial, but were not explained by loss of fluid intelligence, or by volume of damage to either MD or DMN networks. Instead, deficits were associated with diverse lesions, and not strongly correlated with one another. The results confirm that naturalistic tasks capture cognitive deficits beyond those measured by fluid intelligence. We suggest, however, that these deficits may not arise from specific control operations required by complex behaviour. Instead, like everyday activities, complex tasks combine a rich variety of interacting cognitive components, bringing many opportunities for processing to be disturbed.
dc.format.mediumPrint-Electronic
dc.publisherElsevier BV
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectDefault mode network
dc.subjectExecutive function
dc.subjectFluid intelligence
dc.subjectNaturalistic tasks
dc.titleFluid intelligence and naturalistic task impairments after focal brain lesions.
dc.typeArticle
dc.publisher.departmentMrc Cognition And Brain Sciences Unit
dc.date.updated2021-12-10T12:11:52Z
prism.endingPage115
prism.publicationDate2021
prism.publicationNameCortex
prism.startingPage106
prism.volume146
dc.identifier.doi10.17863/CAM.78794
dcterms.dateAccepted2021-09-29
rioxxterms.versionofrecord10.1016/j.cortex.2021.09.020
rioxxterms.versionVoR
dc.contributor.orcidMitchell, Danny [0000-0001-8729-3886]
dc.contributor.orcidDuncan, John [0000-0002-9695-2764]
dc.identifier.eissn1973-8102
rioxxterms.typeJournal Article/Review
pubs.funder-project-idMedical Research Council (MC_UU_00005/6)
cam.orpheus.success2021-12-10 - Embargo set during processing via Fast-track
cam.depositDate2021-12-10
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
rioxxterms.freetoread.startdate2100-01-01


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International