자료유형  

 학위논문

Control Number  

0017160579

International Standard Book Number  

9798382782720

Dewey Decimal Classification Number  

616

Main Entry-Personal Name  

Sullivan, Eileen F.

Publication, Distribution, etc. (Imprint  

[S.l.] : Harvard University., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

194 p.

General Note  

Source: Dissertations Abstracts International, Volume: 85-12, Section: B.

General Note  

Advisor: Nelson, Charles A., III.

Dissertation Note  

Thesis (Ph.D.)--Harvard University, 2024.

Summary, Etc.  

요약Children's experiences during the first few years of life can have particularly profound impacts on cognitive development. Although much progress has been made in elucidating the neural mechanisms underlying these associations, most of this work has focused on high-income settings. It is essential to also explore these mechanisms in children growing up in low- and middle-income countries (LMICs), as variation in cultural norms, values, and environments could lead to contextual differences in the biological embedding of experiences. To address this gap, this dissertation uses a multimethod approach across three studies to examine relations among early experiences, brain development, and cognitive outcomes in children growing up in Dhaka, Bangladesh. In the first study, I examined how electroencephalography (EEG) theta power, a general marker of the strength of neural signals, in the first two years of life is related to earlier experiences in infancy and later cognition at five years of age. After establishing these longitudinal links with general cognition, I then explored how experiences are related to more specific sub-domains of cognition. In Study Two, I once again employed EEG, but extracted event-related potentials (ERPs) to examine precise time-locked neural correlates underlying inhibitory control (a key component of executive functions, or higher-level cognitive skills) at five years of age. In Study Three, I turned to functional near-infrared spectroscopy (fNIRS) to study neural processes underlying auditory processing and their relations to language development (another important aspect of cognition) at two and five years of age. Together, these three studies provide insight into how experiences are related to both brain and behavioral markers of cognition in the Bangladeshi context, suggest that the timing of experiences matters, and show the utility of employing multiple neuroimaging methods to examine brain development more comprehensively. These studies also demonstrate the feasibility of conducting neuroimaging studies in LMICs and provide motivation for future research in more diverse settings. The findings from this dissertation, along with future work building from these results, could inform the design of more effective, targeted, and culturally appropriate interventions to support Bangladeshi children's cognitive development.

Subject Added Entry-Topical Term  

Neurosciences.

Subject Added Entry-Topical Term  

Developmental psychology.

Subject Added Entry-Topical Term  

Cognitive psychology.

Index Term-Uncontrolled  

Brain development

Index Term-Uncontrolled  

Cognition development

Index Term-Uncontrolled  

Early experiences

Index Term-Uncontrolled  

Electroencephalography

Index Term-Uncontrolled  

Executive functions

Index Term-Uncontrolled  

Functional near-infrared spectroscopy

Added Entry-Corporate Name  

Harvard University Education

Host Item Entry  

Dissertations Abstracts International. 85-12B.

Electronic Location and Access  

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Control Number  

joongbu:658105