{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T02:04:36Z","timestamp":1783476276232,"version":"3.55.0"},"reference-count":41,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2023,6,14]],"date-time":"2023-06-14T00:00:00Z","timestamp":1686700800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["bpspsychub.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Neuropsychology"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>This study examines the validity of the Delis\u2013Kaplan Executive Function System (D\u2010KEFS) in a traumatic brain injury (TBI) population compared to participants with orthopaedic injuries and normative controls. The utility of the D\u2010KEFS was examined using a between groups design. One hundred patients with mild uncomplicated to severe TBI were recruited from a consecutive cohort of patients admitted as inpatients to a UK Major Trauma Centre and compared to 823 participants from the D\u2010KEFS normative sample and 26 participants with orthopaedic injuries. Data were filtered for performance validity. Sample discrimination was calculated from D\u2010KEFS subtest scores and derived index scores. Sensitivity to TBI severity was established. The TBI participants performed significantly lower on the D\u2010KEFS Trail Making Test, Colour Word Interference, Colour Word Switching, Letter Fluency and Verbal Fluency Category Switching Total Words Correct. The D\u2010KEFS index scores discriminated between TBI, orthopaedic and normative participants with large and moderate effect sizes, respectively. The D\u2010KEFS demonstrated a dose\u2013response relationship with TBI severity. These effects were robust to differences in premorbid intellectual functioning; however, D\u2010KEFS performance was sensitive to performance on tests of mental processing speed. The use of a D\u2010KEFS index score provides a robust and reliable discrimination of TBI patients from healthy control participants. This discrimination is not accounted for by premorbid intellect or the non\u2010specific effects of trauma. The clinical and conceptual implications of these findings are considered.<\/jats:p>","DOI":"10.1111\/jnp.12329","type":"journal-article","created":{"date-parts":[[2023,6,14]],"date-time":"2023-06-14T06:12:25Z","timestamp":1686723145000},"page":"81-99","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Examining the validity of the\n                    <scp>Delis\u2013Kaplan<\/scp>\n                    Executive Function System (\n                    <scp>D\u2010KEFS<\/scp>\n                    ) in traumatic brain injury"],"prefix":"10.1111","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1635-1772","authenticated-orcid":false,"given":"David","family":"Hacker","sequence":"first","affiliation":[{"name":"Clinical Neuropsychology Department University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher A.","family":"Jones","sequence":"additional","affiliation":[{"name":"Clinical Neuropsychology Department University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"},{"name":"School of Psychology The University of Birmingham  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yin Ming","family":"Chan","sequence":"additional","affiliation":[{"name":"School of Psychology The University of Birmingham  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eyrsa","family":"Yasin","sequence":"additional","affiliation":[{"name":"Clinical Neuropsychology Department University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zoe","family":"Clowes","sequence":"additional","affiliation":[{"name":"Clinical Neuropsychology Department University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonio","family":"Belli","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julian","family":"Cooper","sequence":"additional","affiliation":[{"name":"Department of Trauma and Orthopedics University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Deepa","family":"Bose","sequence":"additional","affiliation":[{"name":"Department of Trauma and Orthopedics University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew","family":"Hawkins","sequence":"additional","affiliation":[{"name":"Clinical Neuropsychology Department University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Holly","family":"Davies","sequence":"additional","affiliation":[{"name":"Clinical Neuropsychology Department University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emily","family":"Paton","sequence":"additional","affiliation":[{"name":"Clinical Neuropsychology Department University Hospitals Birmingham NHS Foundation Trust  Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,6,14]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1080\/13803395.2016.1277513"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1017\/S1355617701755063"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1093\/arclin\/acn001"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1093\/arclin\/acp061"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1080\/13854046.2013.809795"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1080\/13854046.2015.1005677"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1017\/S1355617704103123"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1037\/1040-3590.6.4.284"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1037\/a0023712"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1017\/S1355617708081228"},{"key":"e_1_2_8_12_1","volume-title":"Delis\u2010Kaplan executive function system: Technical manual","author":"Delis D. 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