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Foundations of executive function in Down syndrome

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dc.contributor.authorSchworer, Emily, author
dc.contributor.authorFidler, Deborah, advisor
dc.contributor.authorDaunhauer, Lisa, committee member
dc.contributor.authorHepburn, Susan, committee member
dc.contributor.authorKnight, Andrew, committee member
dc.date.accessioned2020-06-22T11:53:43Z
dc.date.available2020-06-22T11:53:43Z
dc.date.issued2020
dc.description.abstractThough early features of infant cognition are predictive of executive function (EF) in typically developing (TD) children, there is little information regarding the developmental origins of EF in Down syndrome (DS). The current study compared the performance of infants with DS and TD controls on four foundational EF dimensions: attention shifting, sustained attention, early planning, and processing speed, and examined the relationship between EF foundations at Time 1 and subsequent EF performance at Time 2 (6 months later). Participants were 58 infants with DS, M chronological age = 11.32 months, SD = 3.50; M developmental age = 7.93 months, SD = 2.79, and 48 TD infants, M chronological age = 7.76, SD = 3.22; M developmental age = 7.75 months, SD = 3.52. Results showed that infants with DS shifted their attention more slowly, looked for longer durations at objects, and demonstrated a longer latency to contact objects when compared to TD infants at Time 1. The association between early planning and chronological age differed by group at Time 1 as well. Attention shifting at Time 1 significantly predicted EF performance at Time 2 in the DS group. This study provides evidence that an early atypical presentation of EF precursors is detectable during infancy in DS and is predictive of subsequent EF performance. These findings will facilitate the identification of areas of early cognitive risk in DS and inform future interventions.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.identifierSchworer_colostate_0053A_15929.pdf
dc.identifier.urihttps://hdl.handle.net/10217/208546
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2020-
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectexecutive function
dc.subjectinfant cognition
dc.subject.lcshDown syndrome
dc.titleFoundations of executive function in Down syndrome
dc.typeText
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineHuman Development and Family Studies
thesis.degree.grantorColorado State University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy (Ph.D.)

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