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Articles 1 - 13 of 13
Full-Text Articles in Social and Behavioral Sciences
The Impact Of Alzheimer Disease On Semantic Knowledge, Maileen G. Ulep
The Impact Of Alzheimer Disease On Semantic Knowledge, Maileen G. Ulep
UNLV Theses, Dissertations, Professional Papers, and Capstones
The research furthers the understanding of the impact of Alzheimer disease (AD) on cognition and the organization of semantic knowledge in the brain, which might contribute to the development of diagnostic and staging tools, and interventions to palliate cognitive deficits. The disruption of semantic knowledge in AD is well documented in the literature. Much of the existing research focuses on the general impact AD has on semantic knowledge. This study explores the impact of AD on specific domains of knowledge, chiefly, living kinds and artifacts, critical to ordinary functioning. The content, organization and structure of the investigated domains of knowledge …
The Stability Of The Speech-To-Song Illusion And Individual Differences, Rodica R. Constantine
The Stability Of The Speech-To-Song Illusion And Individual Differences, Rodica R. Constantine
UNLV Theses, Dissertations, Professional Papers, and Capstones
Music and language are easily distinguishable for the average listener despite sharing many structural acoustic similarities. The Speech-to-Song illusion can give rise to both musical and linguistic percepts by inducing a perceptual switch after listening to multiple repetitions of a natural spoken utterance. As such, it has been used as a tool to control for low-level acoustic characteristics previously shown to drive lateralized brain responses regardless of domain-type, helping to disambiguate the contribution of high- versus low-level processes in both music and speech perception. However, there exists a lack of research on how large a role individual differences such as …
Cognitive Effort Avoidance In Veterans With Suicide Attempt Histories, James M. Bjork, Chelsea S. Rooney, Lisa K. Straub, David M. N. Garavito, Andrew Westbrook
Cognitive Effort Avoidance In Veterans With Suicide Attempt Histories, James M. Bjork, Chelsea S. Rooney, Lisa K. Straub, David M. N. Garavito, Andrew Westbrook
Articles
Suicide attempts (SA) are increasing in the United States, especially in veterans. Discovering individual cognitive features of the subset of suicide ideators who attempt suicide is critical. Cognitive theories attribute SA to facile schema-based negative interpretations of environmental events. Over-general autobiographical memory and facile solutions in problem solving tasks in SA survivors suggest that aversion to expending cognitive effort may be a neurobehavioral marker of SA risk. In veterans receiving care for mood disorder, we compared cognitive effort discounting and evidence-gathering in a beads task between veterans with (SAHx+; n = 26) versus without (SAHx-; n = 22) a history …
Neuroanatomy In Mild Cognitive Impairment: Relationship To Functional Skills, Treatment Expectancy, And Comorbid Depression, Sara Rushia
Dissertations, Theses, and Capstone Projects
Mild cognitive impairment (MCI) is a neurocognitive disorder defined by cognitive decline in older adults. Although MCI has been studied for decades, there remain important areas to be explored in order to adequately characterize aspects of this disorder that provide information valuable for possible interventions and disease progression to dementia, including a better understanding of the neuroanatomical variables relevant to this disorder. Such neuroanatomical variables include cortical thickness, hippocampal volume, and white matter hyperintensities (WMHs). This dissertation consists of three separate studies aimed at addressing gaps in the literature on MCI in relation to brain morphometrics and under-studied characteristics involved …
The Effects Of Physical Function And Genetics On Cognition And Blood Biomarkers In Individuals At-Risk For Alzheimer’S Disease And Related Dementias, Joshua Louis Gills
The Effects Of Physical Function And Genetics On Cognition And Blood Biomarkers In Individuals At-Risk For Alzheimer’S Disease And Related Dementias, Joshua Louis Gills
Graduate Theses and Dissertations
Alzheimer’s disease and related dementia (ADRD) rates are expected to triple by the year 2050. Early detection and specific mitigation efforts are warranted to blunt the alarming rate. Physical function (PF) declines with age, but higher physical function is associated with better cognitive functioning in middle-to- older age individuals. Moreover, greater physical activity (PA) is associated with better global cognition; however, Apoliporotein e4 carriers may not gain the same benefits with exercise. Additionally, plasma phosphorylated tau 217 (p-tau217) has been identified as a novel diagnostic ADRD biomarker which needs further research to examine associations with risk factors. Therefore, the aims …
Lifetime Racism And John Henryism On Cognition And Cardiovascular Health In Black Men, Roy Mitchell
Lifetime Racism And John Henryism On Cognition And Cardiovascular Health In Black Men, Roy Mitchell
Dissertations
Lifetime racism is a type of chronic stress that is often accompanied by depression. Racism is the experience of many Black men because of several psychosocial stressors such as reduced resources and institutional barriers, to name a few. Active coping is typically utilized by Black men as a consistent means to reduce the negative outcomes linked to racism, however, this up-tempo coping style can contribute to poor cardiovascular health and cognitive impairment over time. The present study aimed to provide data to support the effects of lifetime racism and active coping on cardiovascular health and cognition. There were three hypotheses …
Sound Judgment: Review Of Noise: A Flaw In Human Judgment (2021) By Daniel Kahneman, Olivier Sibony, And Cass R. Sunstein, Anne Kelly
Numeracy
In Noise: A Flaw in Human Judgment (2021), Daniel Kahneman, Olivier Sibony, and Cass R. Sunstein convincingly demonstrate the pervasiveness and harmfulness of unwanted internal variability or noise. Using examples from both public and private sectors to demonstrate the quality and limits of the judgments we make, they argue that, despite objections based on possible cost, difficulty, and dehumanization, the reduction of noise is imperative for the fairness and equitability of systems upon which we depend.
The Influence Of Parental Psychological Control On Offspring Anxiety Symptomatology: A Cognitive Model, Yu Ping Wong
The Influence Of Parental Psychological Control On Offspring Anxiety Symptomatology: A Cognitive Model, Yu Ping Wong
Dissertations and Theses Collection (Open Access)
Parental control has often been purported to be a risk factor for offspring anxiety. Recent studies however, identify that a particular dimension of control - parental psychological control - is an especially important contributor to anxiety. However, the mechanisms behind this relationship remain unknown. Thus, in this study, we seek to bridge this gap in the literature by examining whether a cognitive mechanism underlies this relationship. Drawing on Beck's model of emotional disorders, we propose that control- related beliefs and negative automatic thoughts would serially mediate the influence of psychological control on anxiety symptoms. Moreover, we sought to examine the …
Cross-Modal Perception Of Identity By Sound And Taste In Bottlenose Dolphins, Jason N. Bruck, Sam F. Walmsley, Vincent M. Janik
Cross-Modal Perception Of Identity By Sound And Taste In Bottlenose Dolphins, Jason N. Bruck, Sam F. Walmsley, Vincent M. Janik
Faculty Publications
While studies have demonstrated concept formation in animals, only humans are known to label concepts to use them in mental simulations or predictions. To investigate whether other animals use labels comparably, we studied cross-modal, individual recognition in bottlenose dolphins (Tursiops truncatus) that use signature whistles as labels for conspecifics in their own communication. First, we tested whether dolphins could use gustatory stimuli and found that they could distinguish between water and urine samples, as well as between urine from familiar and unfamiliar individuals. Then, we paired playbacks of signature whistles of known animals with urine samples from either the same …
Effects Of Recess On Educational Outcomes In Elementary School Children, Katelyn Whitham
Effects Of Recess On Educational Outcomes In Elementary School Children, Katelyn Whitham
Health, Human Performance and Recreation Undergraduate Honors Theses
Introduction: Because physical activity is beneficial for physical and mental health, the declining opportunities to implement adequate recesses in schools are devastating for children. If educational outcomes are positively affected by increased recess time or quality, schools are more likely to receive funding for programs and resources that support this renovation to recesses, providing research in lacking topics. Purpose: The purpose of this systematic review is to find related, academic articles for cross examination of data collected on the effects that recess has on educational outcomes so that schools may use this as a resource to receive funding to increase …
Parent Reports Of Executive Functions In Students With Learning Disability, Jane Roitsch, Annemarie L. Horn, Lisa Morin
Parent Reports Of Executive Functions In Students With Learning Disability, Jane Roitsch, Annemarie L. Horn, Lisa Morin
Communication Disorders & Special Education Faculty Publications
This study examines the results of the Behavior Rating Inventory of Executive Function (BRIEF-2) (Gioia et al., 2015) reported by parents of children with Specific Learning Disability (LD) and/or other comorbid disabilities. LD is most notably associated with comorbid attention deficit hyperactivity disorder (ADHD) (Alloway & Stein, 2014; Westby &Watson, 2004; Willcutt et al., 2013). A total of 43 parents completed the BRIEF-2 rating scale. Findings suggest children with LD and ADHD display greater challenges with inhibition, working memory, planning, along with greater challenges in organization and metacognition. Parents of children with LD reported their children have greater levels of …
The Evolution Of Quantitative Sensitivity, Margaret A H Bryer, Sarah E. Koopman, Jessica F. Cantlon, Steven T. Piantadosi, Evan L. Maclean, Joseph M. Baker, Michael J. Beran, Sarah M. Jones, Kerry E. Jordan, Salif Mahamane, Andreas Nieder, Bonnie M. Perdue, Friederike Range, Jeffrey R. Stevens, Masaki Tomonaga, Dorottya Ujfalussy, Jennifer Vonk
The Evolution Of Quantitative Sensitivity, Margaret A H Bryer, Sarah E. Koopman, Jessica F. Cantlon, Steven T. Piantadosi, Evan L. Maclean, Joseph M. Baker, Michael J. Beran, Sarah M. Jones, Kerry E. Jordan, Salif Mahamane, Andreas Nieder, Bonnie M. Perdue, Friederike Range, Jeffrey R. Stevens, Masaki Tomonaga, Dorottya Ujfalussy, Jennifer Vonk
Jeffrey Stevens Publications
The ability to represent approximate quantities appears to be phylogenetically widespread, but the selective pressures and proximate mechanisms favouring this ability remain unknown. We analysed quantity discrimination data from 672 subjects across 33 bird and mammal species, using a novel Bayesian model that combined phylogenetic regression with a model of number psychophysics and random effect components. This allowed us to combine data from 49 studies and calculate the Weber fraction (a measure of quantity representation precision) for each species. We then examined which cognitive, socioecological and biological factors were related to variance in Weber fraction. We found contributions of phylogeny …
The Effect Of State/Trait Rumination On A Prospective Memory Task Delivered Remotely Using A Real-Time And Repeated Approach, Iulia Niculescu
The Effect Of State/Trait Rumination On A Prospective Memory Task Delivered Remotely Using A Real-Time And Repeated Approach, Iulia Niculescu
Electronic Theses and Dissertations
Background. Prospective memory (PM) refers to the intention to perform a future task held in memory that is executed without any explicit prompts. PM may be negatively impacted by depression, but the mechanisms that drive this association remain unclear. One idea is that rumination increases the frequency of task-irrelevant thoughts, depleting attentional capacity, and thereby reducing PM accuracy and increasing response times. To date, no studies have examined the effects of state and trait rumination on PM using online testing to collect real-time data over time. Objectives. To examine the effect of (1) state and (2) trait rumination on a …