Digital Commons Network^™

The Role Of Risk And Resilience In Psychological Distress: An Application Of The Minority Stress Model, Rachel Clair Franklin

Theses and Dissertations

LGBT individuals experience disproportionate levels of psychological distress compared to heterosexual populations, often attributed to minority stressors, including experiences of discrimination and victimization. Guided by the Minority Stress Model, the present study examined whether social and community support moderated the relationship between minority stress and psychological distress, and whether rejection sensitivity and fear of discrimination mediated these associations. Data were collected from a sample of 251 individuals who self-identified as lesbian, gay, bisexual, or transgender in the United States. Multiple regression, moderation, and mediation analyses using the PROCESS macro were conducted to examine relationships among experiences of discrimination, sexuality-based victimization, …

Empirical Benchmarks For Interpreting Effect Sizes In Violent Crime Interventions, Kohta James Matsukawa Hansen

Theses and Dissertations

Criminal justice researchers apply Cohen’s (1988) benchmarks to classify effect sizes as small, medium, or large, despite these standards never being meant for broad, decontextualized use (Cohen, 1988; Gies et al., 2024; Goulet-Pelletier & Cousineau, 2018; Lakens, 2013; Milner et al., 2023). Repeatedly doing so may weaken statistical validity, distort findings, and impede effective policymaking. This study introduces the first effect size benchmarks specifically designed for violent crime interventions.

Using a quasi-meta-analysis framework, 1,605 effect sizes from 104 violent crime intervention studies from the CrimeSolutions clearinghouse were converted to Cohen’s d. Three new discrete benchmarking methods were created using a …

Does Concurrent Completion Of A Computer Task Interfere With Talking? Comparing Younger And Older Adults, Emma Simpson Hymas

Theses and Dissertations

This study investigates the impact of a computer-based divided attention task on spoken language and compares the impact between younger (18–30 years) and older (55–82 years) adults. Sixty adults participated in a speaking task and two computer tasks which varied in difficulty. The Level 1 computer task involved highlighting each instance of the word “the” and the Level 2 computer task involved highlighting each instance of the word “the” while also underlining each instance of the word “a”. Each task was completed alone and then two computer tasks with different levels of difficulty were completed concurrently with a procedural discourse …

Assessing Abuse And Neglect In U.S. Nursing Homes: A Comparative Analysis Across Pre-, During, And Post-Pandemic Periods, Katherine Gane

Theses and Dissertations

Nursing homes are among the most closely regulated providers in the U.S. healthcare system, with both federal and state agencies working together to monitor care and help protect residents. The COVID-19 pandemic, however, introduced unprecedented challenges for facilities and survey agencies alike, disrupting normal operations, limiting in-person visits, and temporarily shifting regulatory priorities. The purpose of this study was to examine how these pandemic-related disruptions were reflected in the severity and reporting patterns of substantiated abuse and neglect deficiencies in U.S. nursing homes. Using publicly available data from the Centers for Medicare & Medicaid Services (CMS), this study analyzed 39,607 …

The Effect Of Medical Aid In Dying On Health Outcomes And Risky Behavior Of The Elderly, Jacky Wu

Theses and Dissertations

This study examines the effects of Medical Aid in Dying (MAiD) legalization on health outcomes and behavior among elderly U.S. adults using BRFSS data from 2005-2022. Using staggered difference-in-differences, this paper finds that MAiD increases exercise, lowers BMI, and reduces blood pressure medication use.

24-H Circadian Rest-Activity Rhythms And Physical Frailty In Older Adults: A Biopsychosocial Perspective On Sex Differences And Social Capital, Jisu Kim

Theses and Dissertations

Physical frailty is a prevalent geriatric syndrome characterized by age-related decline across multiple physiological systems. Physical frailty is associated with an elevated risk of adverse health outcomes, including chronic disease progression and all-cause mortality, representing a significant and growing public health concern. Disrupted circadian rest-activity rhythms (RARs) are increasingly recognized as clinically meaningful markers of physical frailty in older adults. However, the extent to which biological sex and social determinants of health (SDoH), particularly social capital, contribute to or modify the associations between RARs and physical frailty remains underexplored.

Therefore, this dissertation summarizes the existing literature on age-related changes in …

The Relationship Between Light Physical Activity And 10-Year Weight Change In 2,868 U.S. Adults: A National Health And Nutrition Examination Survey Investigation, Chloe Diane Cory

Theses and Dissertations

The prevalence of obesity has steadily increased over the past several decades. About 13.4% of Americans aged 20-74 had obesity in 1960-1962 and the prevalence has steadily increased to 40.3% in 2021-2023--more than a 3-fold increase. PURPOSE: The aim of this study was to evaluate the relationship between time spent in light physical activity (LPA) and 10-year weight change in a random sample of 2868 women and men representative of the U.S. adult population. METHODS: Data were used from the National Health and Nutrition Examination Survey (NHANES) from the 2003-2006 data cycles. Participants were limited to non-pregnant U.S. …

Registered Nurses' Autism Knowledge And Preparedness To Care For Autistic Patients, Bronte Elisa Weissman

Theses and Dissertations

Autistic individuals frequently report negative experiences during healthcare interactions and numerous provider-level barriers to accessing quality care, including stereotyping, perceived lack of autism knowledge, challenges with communication, and insufficient accommodations. Reports of healthcare providers’ experiences caring for autistic patients in the U.S. have largely come from physicians, who endorse inadequate training, resources, and practical guidelines. Although patients spend far more time with nurses than other healthcare providers, registered nurses (RNs)’ perspectives on caring for autistic patients in the U.S. are largely unknown and autism-focused trainings for nurses are minimal. In the current study, a survey was nationally disseminated to a …

Transcription Fidelity In The Face Of Oxidative Damage, Eastilan Gyiwah Appiah

Theses and Dissertations

It is very important that the process of transcription is correctly carried out in the cell for the faithful expression of the genetic code. However, should mistakes happen, they can result in transcription errors which interfere with the protein-making machinery of the cell. This will result in accumulation of proteins and dysfunctional proteins that have the potential of causing diseases like Alzheimer’s. Oxidative damage caused by hydrogen peroxide is known to cause transcription errors in organisms like yeast. It is therefore important to investigate the extent to which hydrogen peroxide can damage cells.

In Good Times & Bad: Measuring Ambivalence In Custodial Grandparents, Marin Gail Olson

Theses and Dissertations

Like other forms of caregivers, custodial grandparents experience both the joys and trials of raising their grandchildren. This culmination of positive and negative feelings is called “caregiver ambivalence." It has only recently been studied in relation to caregiver burden and wellness in the form of caregiver ambivalence theory (CAT). By collecting data from approximately 395 custodial grandparents via an online survey, the current study aimed to test if custodial grandparents’ feelings of burden influence their perceived well-being and if feelings of ambivalence mediate this relation. Implications of this research include identifying areas of strength and growth within custodial grandparents and …

Illness Severity And Marital Communication In Young Couples: The Moderating Role Of Marital Satisfaction, Jaime Lea Dick

Theses and Dissertations

The emergence of a chronic physical illness is unexpected in emerging adulthood and is accompanied by stress. Additionally, married partners of individuals with physical illnesses are likewise affected by the new diagnosis. Marriage outcomes of couples facing chronic illnesses together vary, being sometimes positive and sometimes negative. The current study examined the relationship between the emergence of chronic physical illness in emerging adults and marital communication of both the patient and partner, with marital satisfaction as a moderator. Gender differences are also addressed. From the Couple Relationships and Transition Experiences (CREATE) study, a nationally representative dataset of newly married emerging …

No Longer At War With My Words: Finding Healing Through Therapeutic Writing, Marlo Degaetano Kreitzinger

Theses and Dissertations

While living in Dallas, Texas, I had the incredible opportunity to work with women transitioning out of homelessness, addiction, prison, or other life traumas. During my four years of facilitating life skills and job readiness classes, I witnessed a desperate need for healing. Many of the women I served were stuck in the repetitive cycle of their unprocessed emotional trauma. These women were often victims of the unprecedented mental health crisis plaguing our world and had little to no access to mental health resources. My initial introduction into therapeutic writing helped me to accept my own mental health crisis and …

The Social Standing Versus The Mind Standing Of Older Adults In Egypt: Cross-Sectional Analysis Of The Relationship Between Social Capital And Cognitive Functions, Shaza H. Shinaishen Dr

Theses and Dissertations

Introduction: Egypt's population, much like that of other countries, is expected to age considerably over the course of the coming decades. Although biological and socioeconomic predictors of cognitive function have been studied widely, personal level social capital remains unexplored, especially in LMICs.

Purpose: This study primarily investigates the relationship between individual social capital and cognitive functioning among older adults aged 65 years and older in Egypt using the structural and cognitive components of social capital, including group membership, civic engagements, and caregiving roles.

Methods: A cross-sectional survey on 363 older individuals in different geographical and demographic segments of Egypt using …

The Effects Of Ataxin-1 Overexpression In The Central Nervous System On Specific Behavioral And Physiological Characteristics Of Drosophila Melanogaster, Sydney Davis

Theses and Dissertations

Spinocerebellar ataxia type 1 (SCA1) is a dominantly inherited neurodegenerative disease caused by a CAG repeat expansion in the ataxin-1 gene, which results in an abnormally long polyglutamine tract. Similarly, overexpression of wildtype Ataxin-1 (wt-Atx-1) in Drosophila melanogaster leads to neurodegeneration, reduced lifespan, and impaired negative geotaxis. Observations include disruptions in sleep-wake cycles, increased oxidative stress biomarkers (like protein carbonyls), and dysregulation of developmental genes such as armadillo (arm) and nemo kinase (nmo). Additionally, elevated expression of SUMOylation-related genes (Aos-1, Uba2, and dSmt3 or dSumo) and increased SUMO protein levels indicate enhanced SUMOylation in the brain. Quantitative analysis of neuronal …

Work-Life Balance And The Impact Of Covid-19 On Faculty At Historically Black Community Colleges (Hbccs), Taneshia Turner Winston

Theses and Dissertations

This research study was conducted to determine how the COVID-19 pandemic affected the work-life balance of faculty at HBCCs based on their race, gender, age, marital status, and tenure status. The study employed a quantitative research design utilizing Exploratory Factor Analysis (EFA) to conduct time-based activities separately and group perception-based response variables into meaningful categories to uncover patterns. To analyze the differences in race, gender, age, marital status, and tenure status, Regression and Chi-square test analyses were used to evaluate the collected data. Regression analysis explored relationships between time spent on activities and perceptions of stress, productivity, and satisfaction. Chi-square …

Behavioral Responses To The Medicare Part D Coverage Gap And Its Closure, Selene Urbatsch

Theses and Dissertations

The author examines how exposure to the Medicare Part D coverage gap affects future prescription drug use and whether the closure of the gap under the Affordable Care Act (ACA) altered beneficiary behavior. Using 2007–2019 MEPS data, the analysis compares Part D enrollees to similarly aged, privately insured individuals, producing first-differences and difference-in-differences estimates. Before the ACA, exposure to the gap was associated with 4.9 fewer prescription fills relative to comparable non-Part D individuals. After the ACA, the effect fell to a reduction of 2.2 generic fills, with no significant decline in branded use. Sudden out-of-pocket cost increases prompted sharp …

Evaluating Registered Dietitians Nutritionists' (Rdn) Knowledge, Attitudes, Behaviors And Practices Of Social Media Best Practices And The Role Of The Rdn Social Media Influencer, Ciera Burback

Theses and Dissertations

The growing use of social media has expanded the potential for RDNs to work with brands to promote products, as other health professionals have done for many years. However, scrutiny of the profession of nutrition and dietetics brought RDN influencers under fire due to disclosure practices and the perception of conflicts of interest in the social media sphere. This survey examined the knowledge, attitudes and behaviors of current RDNs and social media best practices. With 163 respondents over the age of 18 and currently an RDN, part one of the survey included demographic questions, multiple choice and Likert scale questions …

Exploring The Roles Of Registered Dietitian Nutritionists In Food Service Management Practice Settings And The Established Guidelines That Aid In Assessing Competency, Angelique Lim

Theses and Dissertations

Background: Registered dietitian nutritionists (RDNs) are highly qualified professionals to manage food service operations, yet only 3% of RDNs work in food service management. Objective: The objective of this research is to determine what established guidelines, training, certifications, and advanced degrees RDNs working in management of food and nutrition systems (MFNS) use to develop their level of expertise. Methods: RDNs who are members of the Academy of Nutrition and Dietetics Management of Food and Nutrition Systems Dietetic Practice Group were invited to participate in a survey to assess characteristics of current RDNs working in MFNS, and to determine resources, training …

Predictors Of Treatment Completion In Alternatives For Families: A Cognitive Behavioral Therapy, Katharine Murphy

Theses and Dissertations

Child maltreatment is linked to a range of adverse outcomes, including posttraumatic stress disorder (PTSD), anxiety and mood disorders, and behavioral and interpersonal problems (Copeland et al., 2007; McLaughlin et al., 2013; Silverman et al., 2008). Children subjected to abuse by caregivers have the highest risk of PTSD onset (Alisic et al., 2014). To mitigate these effects, Alternatives for Families: A Cognitive Behavioral Therapy (AF-CBT; Kolko, et al., 2011) was developed to improve caregiver-child relationships. AF-CBT has proven effective in reducing family conflict, improving child symptomatology, and minimizing the potential for child abuse (Kolko, 1996a, 1996b; Swenson & Brown, 1999). …

Lifelong Learning And Perceived Quality Of Life: An Exploratory Study Of Older Adult Learners In Southern California, Guadalupe Salgado-Shower

Theses and Dissertations

This exploratory study examines the impact of lifelong learning programs (LLPs) on the perceived quality of life among older adults (OAs) against a global demographic shift towards an aging population (Narushima et al., 2018). With the number of people aged 60 and above projected to nearly double by 2050, understanding and enhancing the well-being of OAs has become imperative (United Nations, 2019). Lifelong learning (LL), involving the continuous acquisition of knowledge and skills irrespective of age, emerges as a promising avenue for improving cognitive functioning, social engagement, and emotional well-being among OAs (Longworth & Davies, 2017). This exploratory study adopts …

Financial Health Literacy Of Community-Dwelling Older Adults: A Qualitative Research Study, Kimberly Davis

Theses and Dissertations

Background: Financial health literacy (FHL) is an emerging concept with unique application to older adults. Multiple complexities converge in older age that create increased financial vulnerability (e.g., retirement, chronic disease). However, low financial and health literacy are common in older adults, impacting their ability to self-manage. The AWV’s focus on prevention offers an opportunity to incorporate a proactive approach to financial-related assessment. This study will explore the perceived value of assessing FHL in primary care settings and the financial-related barriers and facilitators to implementing the personalized prevention plan.

Methods: The conceptual framework was guided by the Individual and Family Self-Management …

Characterization Of Nanoplastic-Induced Exacerbation Of Asthmatic Pathophysiology In A Murine In Vivo Model, Keith Li

Theses and Dissertations

As global plastic production increases, so does the environmental and biological presence of nanoplastics (NPs), raising growing concerns about their potential impact on human health. These particles have been detected in various organs, including the lungs, yet their role in respiratory inflammation remains largely unexplored. Emerging evidence suggests that NP exposure may influence immune responses in the lungs, particularly in individuals with preexisting conditions such as asthma. However, the specific ways in which these particles interact with allergen driven inflammation are still unclear.

In this study, a murine model of allergic airway inflammation was used to investigate how surface modified …

Applied Behavior Analysis: Perspectives Of Mississippi Students Before They Enter The Educational Behavioral Consulting Field, Lauren Ashley Besong

Theses and Dissertations

This thesis analyzes how prospective Applied Behavior Analysis (ABA) professionals are enculturated through their educational pathways at one public university in Mississippi. I surveyed 24 current and prior students of the ABA program, as well as interviewed 1 prior and 10 current ABA students. Findings captured their perceptions of the field they are entering, through their experiences within the program. Results found that the ABA field appears to be split in a dual identity, existing in both educational and clinical spaces. Results showed that external perceptions of the institution viewed the ABA program as more clinical, while the students were …

Risk Factor Patterns For Elder Abuse Among United States Indigenous Peoples: Native Elder Maltreatment Survey Secondary Data Analysis, Maylynn Riding In

Theses and Dissertations

Elder abuse is a significant public health issue, with findings indicating that 9% to 10% of older adults in the United States experience abuse. This figure is likely mirrored among Indigenous Peoples residing within tribal boundaries, although specific data is scarce. This study aims to fill the gap in understanding the prevalence and risk factors associated with elder abuse among United States Indigenous Peoples (USIP) through a secondary data analysis of the Native Elder Maltreatment Survey (NEMS). The NEMS employs two key instruments: the Hwalek-Sengstock Elder Abuse Screening Test (HS EAST), which is validated for community use, and the Native …

Bracketed Assessments In Behavioral Gerontology: Evaluating Preference With Present And Absent Stimuli, Flavia Eduarda Del Castillo Troche

Theses and Dissertations

The present study evaluated the use of bracketed assessments to assess the activity preference of three individuals with dementia. The study proposed an alternative method to traditional stimulus preference assessments, to bridge the gap in behavior analytical literature within behavioral gerontology. Thus, bracketed assessments were conducted using two presentation methods, verbal plus visual presentation and verbal-only presentation. Results suggested that while participants showed consistency within low preferred activity selection in the bracketed assessment, variability was observed among participants’ preferences for high and moderate preferred activities. Both presentation methods yield similar selection results for one participant, however, the other two participants …

Using Discrete-Event Simulation To Balance Staff Allocation And Patient Flow Between Clinic And Surgery In A Pediatric Hospital Setting, John Forbus

Theses and Dissertations

We review the problem of a system-level balanced scheduling scenario. A hospital clinic has a queue for patients needing care. After being seen in clinic, many require follow-up surgery, for which they also wait in a queue. The rate-limiting factor is physician availability for both clinic visits and surgical cases. Much existing work has been done to optimize clinic appointments, as well as to optimize surgical appointments. This novel approach models the entire patient journey at the system level, through both clinic and surgery, to optimize the total patient experience. A discrete-event simulation model of the system is built based …

Episodic Memory Influences On Decision-Making: An Fmri Investigation Of Young And Older Adult Populations, Julie Van

Theses and Dissertations

Episodic memory involves the ability to remember specific events and personal experiences. It shares computational and neural resources with episodic future thinking, or the ability to simulate future episodes in anticipation of situations that have not yet occurred. Activity in the frontal lobe has been associated with episodic memory formation, as functional connectivity between the medial temporal lobe (MTL) and prefrontal cortex (PFC) has been associated with the organization and manipulation of information when forming memories. At its core, episodic memory extends to several other functional domains by recombining past information to construct future scenarios, facilitating an aspect of "mental …

The Impact Of Divided Attention Tasks On Stress: Insights From Heart Rate Variability And Galvanic Skin Response, Kira Stefanie Uluave

Theses and Dissertations

This study examined the impact of divided attention tasks on stress using physiologic measures. The divided attention conditions included speech tasks (conversation or procedural discourse) and non-speech computer-based tasks (visuospatial, mathematical, language, data entry, or text editing). Participants included 60 adults divided into two groups of 30 by age. The young adult group ranged in age from 18-30 years and the older adults ranged from 55-82 years. Participants were required to perform the speech task and the non-speech task in isolation as well as a speech task performed concurrently with each of the non-speech tasks. The order of the tasks …

Type 2 Diabetes And Marital Quality Declines Moderated By Positive Health Behaviors, Rebekah Case Fankhauser

Theses and Dissertations

Type 2 diabetes affects more than one-quarter of older adults in the United States. Many older adults manage type 2 diabetes (T2D) in the context of marriage, although few studies have acknowledged the effect the illness has on marital quality. The current study examined how the presence of T2D in later life relates to marital quality, and how positive health behaviors--diet, physical activity, and sleep--can moderate the relationship between T2D and marital quality. Data from the 1,200 married older adults in the Life and Family Legacies study were used to estimate moderation models using structural equation modeling in Mplus. Results …

Hormetic Modulation Of On Mtor Mitochondria Cross Talk For Mitigation Of Cellular Aging, Mahalakshmi R

Theses and Dissertations

Cellular aging is a gradual process involving structural and functional deterioration of cells. Mitochondria, the biological clock in cells, are known to play a crucial role in the progression of cell aging. According to the mitochondrial free radical theory of aging, oxidative phosphorylation in the mitochondria produces free radicals, such as, reactive oxygen species (ROS), which lead to oxidative stress in cells. This, in turn, results in mitochondrial dysregulation, and eventually causes degeneration of cellular components, thereby propagating cell aging. However, it is to be underscored that aging, at its core, is a multifaceted phenomenon that involves a number of …