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On the Utility of Surface Electromyography-Based Biofeedback on Rehabilitation from Total Knee Arthroplasty: A Clinical Trial

Knee osteoarthritis affects approximately 25 million adults. In severe cases, total knee arthroplasty (TKA) is the most common solution. TKA is effective at addressing pain and reducing continued degeneration of articular cartilage. However, effective physical therapy (PT) following TKA is vital for a full functional recovery. Despite the importance of PT, half of patients never achieve a full functional recovery. Decreases in proprioceptive feedback, severe atrophy, and pain inhibition all likely contribute to the variability in effectiveness. Surface electromyography-based biofeedback (sEMGBF) may allow clinicians to address some of these barriers by supplementing proprioceptive feedback and targeting small muscle contractions before eventually increasing the contraction requirement. Using a between group design, we compare the effectiveness of sEMGBF (7) to neuromuscular stimulation (NMES) (6), and a control group (6) in recovery following TKA. Effectiveness was evaluated across 4 metrics (quadriceps strength, range of motion, functional improvement, and quality of life) in a pre-test/post-test fashion. At the statistical level this study suggest that sEMGBF leads to greater improvements in quadriceps strength relative to the NMES and control group. Additionally, visual analysis suggests that sEMGBF may also lead to greater improvements in range of motion, and functional improvement relative to the NMES and control …
Date: August 2022
Creator: Armshaw, Brennan
Object Type: Thesis or Dissertation
System: The UNT Digital Library

The Informational Effects of Non-Deal Roadshows

Non-deal roadshows (NDR) are privately held one-on-one meetings between the buy-side of financial institutions and firm management. Using a novel dataset of these meetings, I examine the effects that NDR meetings have on the outcomes of two important corporate events: seasoned equity offerings (SEOs) and mergers and acquisitions (M&As). I also study the potential implications of the information content in NDRs on the behavior of stock returns following earnings announcements, which has been the subject of much academic work. I structure the dissertation in three essays. In the first essay, I examine the relationship between NDR activity and the underpricing of SEOs. I find that NDRs are associated with lower SEO underpricing. This association is stronger for firms with infrequent NDR activity, for smaller firms, and for firms with higher analysts' forecast errors. These findings suggest that NDRs reduce the level of asymmetric information between firms and investors, which results in a lower cost of raising equity. In Essay 2, I investigate whether the occurrence of NDR meetings affects post-earnings-announcement drift (PEAD). I find that PEAD declines after NDR activity when the most recent NDR meeting occurs within one month before the earnings announcement. This decline is most pronounced among …
Date: August 2022
Creator: Howell, Dylan A.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Latinos for Trump? National Origin, Nativity Status, and Favorability for Trump in 2016

In this study, I examine the relationship between national origin, nativity status, and favorability toward Donald Trump among Latinos in 2016. In particular, I examine the relationship between Cubans, Dominicans, and "other" Latinos to understand how differences in national origin and nativity status influence Trump favorability. The term "Latino" is a pan-ethnic term used to describe individuals with ancestry from Latin America who share a common language, religion and culture. However, studies have shown that Latinos are actually more diverse and political attitudes may differ based on factors like acculturation, national origin, and nativity status. Using data from the 2016 Collaborative Multiracial Post-Election Survey, I find that favorability for Trump differs by national origin and nativity status as immigrants of "other" national origins favor Trump than Cubans and Dominicans. This suggest that Latinos attitudes are not shaped by their pan-ethnic identity and are rather influenced by national origin and nativity status.
Date: August 2022
Creator: Moreno, Vianni Alyssa
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Urban Elementary Teachers' Perceptions of Multicultural Education and Culturally Responsive Pedagogy (open access)

Urban Elementary Teachers' Perceptions of Multicultural Education and Culturally Responsive Pedagogy

Current literature calls for more culturally responsive pedagogy and multicultural education to connect with what students know, do, and believe outside of school and to utilize this to foster their academic achievement. This study investigated elementary teachers' perceptions of culturally responsive pedagogy and multicultural education in an urban school with a predominantly large minoritized student population (African American and Hispanic students). The study focused on four elementary teachers' perceptions of implementing culturally responsive pedagogy and multicultural education principles into their classroom and how this contributed to teacher-student interactions and student academic achievement. An integrated framework consisting of constructs from the literature on culturally responsive pedagogy and multicultural education guided the study. A thematic analysis of data (interviews, focus group interview, classroom observations, artifacts) revealed four teacher perceptions of culturally responsive pedagogy and multicultural education: Practicing culturally responsive pedagogy and multicultural education: (1) enables teachers and students to embrace diversity; (2) focuses teachers and students on the past and the present social injustices and provides social justice identity development among students; (3) builds empathy among teachers and students; and (4) promotes teachers to reflect on prejudice reduction. Implications: This study showed that constructs from culturally responsive pedagogy and multicultural education are …
Date: August 2022
Creator: Davis, Vickie Domonique
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Experiences of Black Student Athletes in the Advent of the COVID-19 Global Pandemic: A Qualitative Study (open access)

Experiences of Black Student Athletes in the Advent of the COVID-19 Global Pandemic: A Qualitative Study

On January 30, 2020, the World Health Organization (WHO) declared the outbreak of the novel coronavirus (COVID-19) a public health emergency of international concern. In March 2020, the United States government imposed impactful safety and confinement measures issued by the Centers for Disease Control and Prevention (CDC) all over the country to prevent community transmission of COVID-19. Institutions of higher education rapidly transitioned to online learning and eliminated in-person engagements in the spring of 2020 as a result of the COVID-19 outbreak. The National Collegiate Athletic Association (NCAA) followed a similar trajectory by shutting down all athletic activities due to the global pandemic. While college students in general notably experienced increased pandemic related distress and mental health concerns (e.g., depression, anxiety) during the early stages of the global pandemic, the disruption of collegiate sport competitions and seasons uniquely and significantly impacted collegiate student athletes and their overall well-being. In this qualitative study, I sought to document and understand the narrative of Black student athletes' experiences of stress and coping during the first two months of the COVID-19 global pandemic and cancellation of collegiate sports. Through reflexive thematic analysis, I found that psychosocial resources such as avoidance, acceptance, mindful self-compassion, health …
Date: August 2022
Creator: Jackson, Randi D.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Structural Affordances and Framing Methods in Animal Rescue Facebook Posts (open access)

Structural Affordances and Framing Methods in Animal Rescue Facebook Posts

The overpopulation of domestic animals has become an ongoing problem across the United States. Approximately 1.5 million animals are being euthanized in the United States every year. In fact, shelters euthanize about 23 % of the animals they take in. However, the euthanasia rate would be much greater without animal rescues, which are different than animal shelters. Animal rescues are unique from shelters because they are not government-funded, and they do not usually have a physical location. Because of these factors, animal rescues rely on volunteers to care for the animals they save and donors to fund their operations. Animal rescues heavily depend on social media to fulfill many of their needs, including fundraising and volunteer recruitment, which makes the nonprofits particularly vulnerable to failure without a social media following. This research combined a content analysis of animal rescues' Facebook posts with a survey of the rescues to determine which Facebook affordances and message frames animal rescues used online were positively related to online and offline success metrics. The content analysis focused on analyzing posts for message frames, and the survey provided information about annual success. The combination of a content analysis and a survey uncovered relationships between Facebook characteristics, …
Date: August 2022
Creator: Muns, Karan Elizabeth
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Using Paired Excerpts from Robert Schumann's "Album for the Young," Op. 68 and Lowell Liebermann's "Album for the Young," Op. 43 as a Teaching Resource to Make a Smoother Transition from Romantic to Modern Piano Music for Young Students (open access)

Using Paired Excerpts from Robert Schumann's "Album for the Young," Op. 68 and Lowell Liebermann's "Album for the Young," Op. 43 as a Teaching Resource to Make a Smoother Transition from Romantic to Modern Piano Music for Young Students

The first chapter introduces the purpose and significance of this study for the piano teacher who wants to teach twentieth-century piano music effectively at the elementary or intermediate level, combining it and comparing it with nineteenth-century piano music. The second chapter presents an overview of both Schumann and Liebermann's Album for the Young. In the third chapter, the two collections are analyzed pedagogically and compared in detail. The study should provide piano teachers with an understanding of the musical concepts of each piece and how to effectively teach students about twentieth-century music by pairing them.
Date: August 2022
Creator: Cho, Kyungrae
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Exploring Adoption, Implementation, and Use of Autonomous Mobile Robots in Intralogistics Applications (open access)

Exploring Adoption, Implementation, and Use of Autonomous Mobile Robots in Intralogistics Applications

Autonomous mobile robots (AMRs) use decentralized, AI-driven decision-making processes to providing material handling capabilities in industrial settings. Essay 1 examines how firms organize and engage to mitigate uncertainty during external technology integration (ETI), using an abductive approach with dyadic customer-supplier data to extend prior ETI models by exploring firm engagement, organizational adaptation, and distinct uncertainty types in AMR ETI projects. Essay 2 applies a grounded theory approach to examine AMR integration, using constant comparison and theoretical sampling to develop core categories explaining how suppliers, customers, and users exchange knowledge impacting AMR integration and project performance. Finally, Essay 3 is a conceptual paper examining the importance of end-user adoption by integrating ETI and technology acceptance model (TAM) frameworks, exploring important relationships between managerial interventions, cognitive constructs, user acceptance, and project success in AMR ETIs. As a whole, these essays contribute to the body of knowledge by extending the breadth and depth of current ETI models, emerging a substantive theory of AMR AIU, and extending TAM by grounding managerial interventions and individual cognitive constructs in an AMR context. Managers can use these frameworks to differentiate AMRs and other autonomous collaborative technology from traditional automation, and develop strategies enabling timely and effective AMR …
Date: August 2022
Creator: Maywald, Jacob Daniel
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Exploring Functional Interdependence of Mands, Tacts, and Intraverbals after Brain Injury (open access)

Exploring Functional Interdependence of Mands, Tacts, and Intraverbals after Brain Injury

One goal of this study was to evaluate the emergence of mands and intraverbals following tact acquisition for individuals with aphasia due to acquired brain injury. A second goal was to evaluate the transfer of shortened latencies as a function of tact training across untrained operants. In Study 1, the dependent measure was accuracy of responding and in Study 2, the dependent measures were rate and latency of responding. Participants for Study 1 were two uninjured adults (pilot) and two adults with brain injury (ABI). Both sets of participants were directly taught to tact up to 6 stimuli. Once tacts were acquired, the response forms were assessed under mand and intraverbal conditions. All pilot participants and one ABI participant showed mand transfer for all stimuli. Tact to intraverbal transfer varied across participants. One adult with brain injury served as a participant for Study 2. Fluency training was used to teach tacts for 15 stimuli. Response latencies were gathered for all operants before and after training. The participant met the designated aim (rate of responding) and showed a decrease in latencies for tacts and untrained intraverbals. Changes in mand latencies varied. Fluency gains showed partial retention. Results from Study 1 provide …
Date: August 2022
Creator: Baltazar-Mars, Marla
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Guide to the Performance and Study of "Dialogue de l'ombre double" (1985) by Pierre Boulez (1925-1916) (open access)

A Guide to the Performance and Study of "Dialogue de l'ombre double" (1985) by Pierre Boulez (1925-1916)

Pierre Boulez (1925-2016) composed Dialogue de l'ombre double for clarinet and live electronics in 1985. This same year, Alain Damiens of Ensemble InterContemporain premiered and recorded the work with the help of Andrew Gerzso of Institut de Recherche et de Coordination Acoustique/Musique (IRCAM). The piece alternates between pre-recorded and live sections that are performed with varied levels of amplification and reverberation creating a dialogue between the parts. Boulez also includes detailed instructions for the spatialization of the pre-recorded tracks that play through six equidistant speakers that surround the audience. Furthering the complexity of this work, it is available in two published versions: version aux chiffres arabes (Arabic numeral version) and version aux chiffres romains (Roman numeral version). Each version includes much of the same musical material, but arranged in a different order. Performance of Dialogue de l'ombre double requires extraordinary technical facility and musical understanding from the clarinetist, the dedicated involvement of a highly qualified sound technician, and the use of a spacious, technologically equipped performance venue. This performance guide aims to facilitate greater accessibility and understanding of this challenging work, in order to encourage widespread performance of this extraordinary piece.
Date: August 2022
Creator: Miller, Brooke Laurie
Object Type: Thesis or Dissertation
System: The UNT Digital Library
English Loanwords in French: A Corpus-Driven Analysis of Corporate Websites (open access)

English Loanwords in French: A Corpus-Driven Analysis of Corporate Websites

This thesis explores the use of English loanwords in French discourse found on seven France-based corporate websites and the website of one government ministry in France. The following overarching question guided this research project: To what extent are English loanwords used in French for marketing purposes or other reasons? As expected, the results varied greatly from website to website, but it is clear from my analysis of this relatively small corpus that the use of English is widespread in French discourse. In this thesis, I allowed myself to engage in some speculation based on my own background and experiences. I acknowledge that further research is needed in order to provide a more comprehensive analysis of English loanwords in French since this is a very complicated topic that can be approached from many different angles.
Date: August 2022
Creator: Padilla, Werner G
Object Type: Thesis or Dissertation
System: The UNT Digital Library

The Impact of Blockchain Food Tracing Information Quality and Trust on Intention to Purchase

The purpose of our research is to empirically test how system attributes of blockchain build trust through system and information components in blockchain food traceability systems. Findings showed that system attributes of blockchain are strong predictors of trust leading to intention to purchase. A sample of 358 responses were collected from college students through online survey. SmartPLS 3.0 is adopted for data analysis. We made contributions by building a new research model to guide future studies on trust formation in blockchain based systems as well as informing practice to adopt proven features of blockchain to create and capture values for customers.
Date: August 2022
Creator: Lai, Im Hong
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Assessing Student Perceptions in Short Research Experiences and Course Research Experiences in Undergraduate Biology Laboratories (open access)

Assessing Student Perceptions in Short Research Experiences and Course Research Experiences in Undergraduate Biology Laboratories

This study examined students' perception between short research experiences (SRE) courses and full-semester course research experiences (CRE) using the Persistence in the Sciences (PITS) survey and the interview questionnaire. The study also aimed to correlate the influence of student's demographic as a predictive indicator for Project Ownership Scores (POS) and Quantitative Literacy (QL) score means. The three courses studied at the University of North Texas were Biology for Science Majors Laboratory (BIOL 1760 SRE), Microbiology with Tiny Earth (BIOL 2042 Tiny Earth SRE), and Introductory Biology Research Laboratory I (BIOL 1750 SEA-PHAGES CRE). The mean scores for the PITS categories leaned favorably towards the research component of each laboratory course assessed in this study. The interview questionnaire showed 66% of the students in the SRE courses and 90% of the students in the CRE course preferred the research component of the lab. Paired survey demographic analysis for BIOL 1760 SRE showed significance for the Science Community Values with associate/bachelor's degree. BIOL 1750 SEA-PHAGES CRE showed significance in three of the six categories when comparing means for Project Ownership Emotion, Self-Efficacy, and Science Identity with Gender. Binary logistics was used to build a regression model to predict demographics with approximately 65% …
Date: August 2022
Creator: Alberts, Arland Dulcey
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Occupational Stress and Burnout among American Pastoral Musicians

Occupational burnout is a concern to the health and longevity of clergy and musician careers. However, no known study has assessed occupational burnout among pastoral musicians. A literature review revealed pastoral musicians anecdotally experienced multi-tasking, workplace politics, inequality of workload, competing liturgical styles, lack of job security, lack of financial security, and lack of rest, among other indicators of burnout. Therefore, the aims of this paper were to: (1) describe pastoral musicians as a population; (2) identify the prevalence rate of burnout among pastoral musicians; (3) investigate the relationship between pastoral musicians' burnout and religious coping; and (4) investigate the relationships between pastoral musicians' burnout and depression, anxiety, and stress. In 2021, an online questionnaire was designed to assess burnout among pastoral musicians. Dissemination techniques included emails to members of the Hymn Society of North America and via social media to collect data from pastoral music directors in the United States of America. The survey yielded n = 1,050 respondents: 83.8% experienced one or more symptoms of burnout (41.3% with low efficacy; 12.4% with high emotional exhaustion; 21.3% with high cynicism; 8.8% with burnout). Ineffectiveness was positively correlated with negative religious coping. Emotional exhaustion and cynicism were positively correlated with …
Date: August 2022
Creator: Behel, Kensley Anne
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Topological Conjugacy Relation on the Space of Toeplitz Subshifts (open access)

Topological Conjugacy Relation on the Space of Toeplitz Subshifts

We proved that the topological conjugacy relation on $T_1$, a subclass of Toeplitz subshifts, is hyperfinite, extending Kaya's result that the topological conjugate relation of Toeplitz subshifts with growing blocks is hyperfinite. A close concept about the topological conjugacy is the flip conjugacy, which has been broadly studied in terms of the topological full groups. Particularly, we provided an equivalent characterization on Toeplitz subshifts with single hole structure to be flip invariant.
Date: August 2022
Creator: Yu, Ping
Object Type: Thesis or Dissertation
System: The UNT Digital Library

The Construction of the Fringe Extraterrestrial of Postmodernity

This study focuses on the discourse that orders and creates a logic of the extraterrestrial during postmodernity, what I term "Fringe." Using Foucault's notion of discourse, I define and theorize Fringe and its formation during postmodernity, looking at the particular features of the historical moment post-1960 that contributed to the creation and regulation of a particular extraterrestrial. I then investigate historical conceptions of the extraterrestrial from Aquinas to Kant. This genealogy of the extraterrestrial reveals a rich history of the extraterrestrial and compares this history with Fringe. After this I discuss two precursors of Fringe discourse: the Society for Psychical Research and the writings of anomalous researcher Charles Fort. This investigation of pre-Fringe notions of the psychical in discourse shows how the SPR and Fort's work both created new ways of looking at and speaking about phenomena falling outside the purview of "normal science" and contributed to the formation of Fringe while also being distinguishable from it. Finally, I analyze two popular iterations of Fringe discourse—the ancient aliens hypothesis and the abduction narrative—as popularized in the works of Erich von Däniken and Whitley Strieber.
Date: August 2022
Creator: Smith, Andrew
Object Type: Thesis or Dissertation
System: The UNT Digital Library

"Molt"

Considered privileged by social standards, with two loving parents and a spot in an elite, all-girls private school in New Jersey, Charlie should be happy. But at Oak Crest College Preparatory, if you're not a straight-A student, you're dumb. If you're not a star athlete, you're invisible. And if you don't compete to be the best? Well, you might as well flunk out. Charlie is already failing math, and it's only October. Why not throw school—and maybe her whole life—away? Then, one day, Charlie finds a suicide note in the bathroom at school, and her world is turned upside down. As she goes through the process of trying to find out who wrote it, the note writer herself remains hidden to herself and everyone else. A perfectionist all her life, she strives to be everything her parents and teachers expect, but does not know what truly makes her happy. The pressure to fulfill expectation is starting to weigh on her, but no one, except Charlie, can know she is thinking of suicide.
Date: August 2022
Creator: Susser, Carly
Object Type: Thesis or Dissertation
System: The UNT Digital Library

A Sensitive and Robust Machine Learning-Based Framework for Deciphering Antimicrobial Resistance

Antibiotics have transformed modern medicine in manifold ways. However, the misuse and over-consumption of antibiotics or antimicrobials have led to the rise in antimicrobial resistance (AMR). Unfortunately, robust tools or techniques for the detection of potential loci responsible for AMR before it happens are lacking. The emergence of resistance even when a strain lacks known AMR genes has puzzled researchers for a long time. Clearly, there is a critical need for the development of novel approaches for uncovering yet unknown resistance elements in pathogens and advancing our understanding of emerging resistance mechanisms. To aid in the development of new tools for deciphering AMR, here we propose a machine learning (ML) based framework that provides ML models trained and tested on (1) genotypic AMR and phenotypic antimicrobial susceptibility testing (AST) data, which can predict novel resistance factors in bacterial strains that lack already implicated resistance genes; and (2) complete gene set and AST phenotypic data, which can predict the most important genetic loci involved in resistance to specific antibiotics in bacterial strains. The validation of resistance loci prioritized by our ML pipeline was performed using homology modeling and in silico molecular docking.
Date: August 2022
Creator: Sunuwar, Janak
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Cost of Higher Education: Impacts of Student Loan Debt on the Life Course for Hispanic Americans (open access)

The Cost of Higher Education: Impacts of Student Loan Debt on the Life Course for Hispanic Americans

Student loan debt continues to be an issue in the U.S., with potential long-term effects on loan repayment and potential wealth accumulation. In particular, minorities face barriers in the educational system and accruing wealth. Hispanics occupy a middling position in the U.S. racial hierarchy. Using the National Longitudinal Survey of Youth 1997 geocode data, in this study I examined how Hispanic-White differences in student debt change over time and how student debt influences wealth. In addition, I accounted for immigration status via parents' nativity status to investigate debt burdens and subsequent wealth for these respondents. I used hierarchical linear growth models to examine debt growth over time and linear decomposition to examine Hispanic-White differences in wealth accumulation and the impact of student debt on these differences. While findings were largely statistically insignificant, I found that Hispanics tended to start with less debt than their White counterparts and that student debt initially grew for both groups. However, White respondents pay off their debt more quickly than Hispanics. In addition, I found that the wealth gap between White and Hispanic respondents grew significantly between the ages of 20 and 35. While Hispanics tended to start with less debt, my findings suggest that …
Date: August 2022
Creator: Knudsen, Jennifer L
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Politics in Uniforms: Military Influence in Politics and Conflictual State Behavior

This dissertation examines how the state-building process relates to civil-military relations and how political influence of the military affects state's conflict behavior. By doing so, this study aims to introduce a nuanced consideration of the well-known civil-military problematique, which might be summarized as the threat the military can constitute to the polity that it is created to protect. I treat this paradox by addressing the following research questions: Why do some militaries have a qualitatively higher level of influence in politics than others? Second, how does the military's influence in politics affect a state's domestic conflict behavior? And third, how does it affect state's international conflict behavior? I develop a theory that when the military is heavily involved in the state-building process, it gains an unusual place within politics, gets itself imprinted in the DNA of the state, and gains undue political power. I name such militaries as state-builder militaries and argue that such states experience qualitatively different civil-military relations, in which the military acts as an extremely Praetorian institution. I argue that state-builder militaries would be able to insulate their political power from the democratization process that the country might experience and behave as persistent interveners in politics. I …
Date: August 2022
Creator: Kocaman, Ibrahim
Object Type: Thesis or Dissertation
System: The UNT Digital Library
"Access Points" (open access)

"Access Points"

Access Points explores the different relationships that humans have to land, focusing on the various ways that the area known as the Wichita Mountains Wildlife Refuge is used, appreciated, and preserved by disparate groups. The natural beauty of this Wildlife Refuge and its striking appearance amidst encircling plains makes it a popular destination for many groups of people, including the local rock-climbing community and generations of indigenous peoples whose connection with this land is as deep as it is longstanding. While climbing organizations have long had to negotiate access and rules regarding climbing within the park, members of the Kiowa community negotiate a much different relationship to a natural area that is now managed by the United States government. These disparate voices, identities, and ways of thinking about land all impact the modern-day Wildlife Refuge in terms of its appearance, individuals' access to the land, and the conservation efforts happening there.
Date: August 2022
Creator: Dye, Aaron Charles
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Comparison of Plaintiff and Defense Expert Witness H-Index Scores in Mild Traumatic Brain Injury Civil Litigation (open access)

A Comparison of Plaintiff and Defense Expert Witness H-Index Scores in Mild Traumatic Brain Injury Civil Litigation

This study examines the background and qualifications of plaintiff and defense experts using the H-Index score as quantification of expert background and qualifications. The goal is to better understand the similarities and differences among the professionals offering paid expert witness testimony in mild traumatic brain injury (mTBI) civil litigation. In this quantitative study, descriptive statistics include the mean and standard deviation scores for the data to support examining measures of central tendency and variance, respectively. The study includes the use of logistic regression and the Wilcoxon signed-rank test, and their statistical assumptions were tested to determine whether they would be used or if it was more appropriate to use a non-parametric test. The study included two research questions: How do the qualifications of plaintiff and defense expert witnesses in mild traumatic brain injury civil litigation compare? and to what extent does a higher h-index correlate with a favorable litigation outcome in a mild traumatic brain injury case? The findings for the hypothesis tests associated with the research questions led to the acceptance of the null hypothesis in each test. There was a lack of asymptotic significance in Hypothesis 1 and a lack of significance in Hypothesis 2. The findings from …
Date: August 2022
Creator: Victor, Elise C
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Examining the Role of Emotion Dysregulation and Rumination in the Relationship between PTSD Symptom Severity and Sleep Disturbances

Emotion dysregulation and rumination are involved in the development, maintenance, and treatment of both posttraumatic stress disorder (PTSD) and sleep disturbances. We examined if and how these factors influenced the nature of the relationship between PTSD symptom severity and subjective sleep disturbances among trauma-exposed individuals. Using data gathered from a community sample of 199 trauma-exposed individuals (Mean age = 35.48; 59.80% female), we examined whether there were stronger significant associations between greater PTSD symptom severity and poorer sleep quality/lower sleep quantity at higher (vs. lower) levels of (1) negative emotion dysregulation and positive emotion dysregulation (both included in the same model) and (2) rumination. Participants recruited via Amazon's Mechanical Turk completed the PTSD Checklist for DSM-5, Brief Version of the Difficulties in Emotion Regulation Scale, Difficulties in Emotion Regulation Scale – Positive, Ruminative Thought Style Questionnaire, and sleep quality/quantity items from the Pittsburgh Sleep Quality Index. Results of simple and additive multiple moderation analyses showed that neither negative/positive emotion dysregulation nor rumination moderated the relationships between PTSD symptom severity and sleep quality/quantity. Exploratory analyses showed that negative emotion dysregulation (when examined independently) moderated the relationship between PTSD symptom severity and sleep quality. There were also significant associations between poorer sleep …
Date: August 2022
Creator: Dolan, Megan A.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Bicultural Identity Integration and Psychological Wellness among Adult Children of Immigrants: Role of Cognitive Flexibility, Affect Regulation, and Adaptive Coping

Guided by the framework of bicultural identity integration (BII), a conceptual model depicting the direct and indirect effects of BII, cognitive flexibility, affect regulation, and coping on psychological wellbeing indicators (i.e., life satisfaction, depression) of adult children of immigrants (ACI) in the U.S. was developed. It was hypothesized that greater BII would contribute to greater cognitive flexibility and affect regulation, which would be associated with more utilization of adaptive coping strategies and greater psychological wellbeing. A total of 240 young ACI from across the U.S. completed the online research questionnaire that measured all variables of interest. Results from structural equation modeling analyses showed adequate model fit with the data. Findings provided support to the indirect effects of BII factors on wellbeing through affect regulation, however, the indirect effect paths are more complicated than what were hypothesized originally. Specifically, higher levels of identity harmony and identity blendedness contributed to more difficulties in emotion regulation, and subsequently, poorer wellbeing. Additionally, both cultural identity harmony and identity blendedness contributed to greater levels of cultural and relational maintenance strategies (i.e., avoidance, forbearance) in the context of intergenerational conflict through affect regulation, but not through cognitive flexibility. Notably, the latent variable of cultural coping strategies …
Date: August 2022
Creator: Bismar, Danna
Object Type: Thesis or Dissertation
System: The UNT Digital Library