UMD Theses and Dissertations

Permanent URI for this collectionhttp://hdl.handle.net/1903/3

New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a given thesis/dissertation in DRUM.

More information is available at Theses and Dissertations at University of Maryland Libraries.

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2013 - 20182

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Subject: search.filters.subject.Executive Functioning

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    THE DEVELOPMENT OF COGNITIVE CONTROL DURING CHILDHOOD: A NEUROCOGNITIVE PERSPECTIVE
    (2018) Troller-Renfree, Sonya; Fox, Nathan A; Human Development; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    One of the hallmarks of human cognition is its adaptability and ability to prioritize task demands in order to complete a goal – a concept known as cognitive control. Research has shown that cognitive control develops rapidly over the first decade of life. One of the key control-related developments during childhood is the transition from a heavy reliance on in-the-moment and as-needed control recruitment (known as reactive control) to more planful and sustained control (known as proactive control). This transition has been observed in a small number of studies, but much is still unknown about how this transition takes place, the mechanisms support this change, and whether this change is driven by coincident development of executive functions. This dissertation examined the development of cognitive control using a cross-sectional design in 79 children – 41 5-year-olds and 38 9-year-olds. To assess cognitive control strategy use, children completed an adapted version of the AX-Continuous Performance Task (AX-CPT) while we recorded electroencephalography (EEG). Children also completed a standardized executive function battery. Results revealed that 5-year-olds relied on reactive cognitive control strategies, while 9-year-olds relied on proactive cognitive control strategies. These behavioral patterns were associated with differential patterns of neural activation in a component known as the P3b. Executive functions were differentially associated with cognitive control strategy use. Specifically, better working memory and inhibitory control skills were related to proactive strategy use and increased context sensitivity. This study is the first to examine behavioral and neural measures of cognitive control strategy use on an AX-CPT task as well as the unique relations between cognitive control strategy and executive functioning.
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    Measurement of self-regulatory constructs across a continuum of performance conditions among kindergarten students
    (2013) Annotti, Lee Ann; Teglasi, Hedwig; Psychology; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Measurement issues related to the assessment of Executive Functioning (EF) and social competence were examined with Kindergarten students (N = 62) and their teachers. Measures of constructs, such as EF and social competence, exist along a continuum of performance conditions, ranging from highly maximal, well-defined tasks with clear performance expectations to more typical, ill-defined tasks with ambiguous performance expectations. It is hypothesized that measures with maximal or typical performance conditions cannot be used interchangeably because the results gleaned from the measures generalize to different situations and different behaviors. This study employed observed variable path analyses to examine the model fit between measures of EF and social competence that present performance conditions that range from maximal to typical. The results indicate that performance conditions of measures significantly alter the relations between measures and the results gleaned from the opposing performance conditions predict different behaviors in different contexts. The results also suggest that more maximal measures of EF do not translate to the social world.