{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T23:11:48Z","timestamp":1790637108765,"version":"4.1.0"},"reference-count":66,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2022,4,6]],"date-time":"2022-04-06T00:00:00Z","timestamp":1649203200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/100000057","name":"National Institute of General Medical Sciences","doi-asserted-by":"publisher","award":["P20GM109025"],"award-info":[{"award-number":["P20GM109025"]}],"id":[{"id":"10.13039\/100000057","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Neurorehabil Neural Repair"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:p>Background. Decreased automaticity is common among individuals with neurodegenerative disease and is often assessed using dual-task (DT) paradigms. However, the best methods for assessing performance changes related to DT demands remain inconclusive.<\/jats:p>\n                  <jats:p>Objective. To investigate the reliability and validity of a novel battery of DT measures (DT Effect\u2014Battery (DTE-B)) encompassing three domains: task-specific interference, task prioritization, and automaticity.<\/jats:p>\n                  <jats:p>Methods. Data for this retrospective cross-sectional study included 125 participants with Parkinson\u2019s disease (PD), 127 participants with Alzheimer\u2019s disease (AD), and 84 healthy older adults. Reliability analyses were conducted using a subset of each population. DTE-B measures were calculated from single and DT performance on the Timed Up and Go test and a serial subtraction task. Construct validity was evaluated via associations within the DTE-B and with theoretically supported measures as well as known-groups validity analyses.<\/jats:p>\n                  <jats:p>Results. Good to excellent reliability was found for DTE-B measures of task interference (motor and cognitive DT effects) (ICCs\u2265.658) and automaticity (combined DT effect (cDTE)) (ICCs\u2265.938). Evidence for convergent validity was found with associations within the hypothesized constructs. Known-groups validity analyses revealed differences in the DTE-B among the healthy group and PD and AD groups ( ps\u2264.001), excepting task prioritization ( ps\u2265.061).<\/jats:p>\n                  <jats:p>Conclusions. This study provides evidence to support the DTE-B as a reliable measure of multiple constructs pertinent to DT performance. The cDTE demonstrated evidence to support its validity as a measure of automaticity. Further investigation of the utility of the DTE-B in both PD and AD, as well as other populations, is warranted.<\/jats:p>","DOI":"10.1177\/15459683221088864","type":"journal-article","created":{"date-parts":[[2022,4,6]],"date-time":"2022-04-06T21:40:41Z","timestamp":1649281241000},"page":"346-359","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":34,"title":["A Novel Way of Measuring Dual-Task Interference: The Reliability and Construct Validity of the Dual-Task Effect Battery in Neurodegenerative Disease"],"prefix":"10.1177","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1853-6949","authenticated-orcid":false,"given":"Jason K.","family":"Longhurst","sequence":"first","affiliation":[{"name":"Saint Louis University, St. Louis, MO, USA"},{"name":"University of Nevada, Las Vegas, NV, USA"},{"name":"Cleveland Clinic Lou Ruvo Center for Brain Health, Las Vegas, NV, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John V.","family":"Rider","sequence":"additional","affiliation":[{"name":"Touro University Nevada, Henderson, NV, USA"},{"name":"University of Nevada, Las Vegas, NV, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeffrey L.","family":"Cummings","sequence":"additional","affiliation":[{"name":"University of Nevada, Las Vegas, NV, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samantha E.","family":"John","sequence":"additional","affiliation":[{"name":"University of Nevada, Las Vegas, NV, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brach","family":"Poston","sequence":"additional","affiliation":[{"name":"University of Nevada, Las Vegas, NV, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elissa C.","family":"Held Bradford","sequence":"additional","affiliation":[{"name":"Saint Louis University, St. Louis, MO, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4234-910X","authenticated-orcid":false,"given":"Merrill R.","family":"Landers","sequence":"additional","affiliation":[{"name":"University of Nevada, Las Vegas, NV, 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