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Identifying Trauma Related Predictors Of Dissociation In Maltreated Youth, Amanda L. Mraz

UNLV Theses, Dissertations, Professional Papers, and Capstones

Maltreated youth who experience traumatic dissociation are at an increased risk for various psychopathological difficulties. Much is still unknown about the machinations behind experiences of dissociation post-trauma. This study aimed to identify variables that place maltreated youth at risk for experiencing traumatic dissociation (e.g., dissociative amnesia, absorption and imaginative involvement, passive influence, depersonalization and derealization, and total adolescent dissociative experiences symptoms (A-DES)). Investigatory variables included demographic (e.g., age, gender, and racial identity), cognitive (e.g., resiliency and posttraumatic cognitions), and psychological (e.g., posttraumatic stress disorder symptoms (PTSD) and anxiety) factors. Classification and regression tree (CART) analysis was utilized to observe the …

The Psychopathology Circumplex+: A Novel Conceptualization Of Psychopathology And Associated Measure, Edward A. Smith

UNLV Theses, Dissertations, Professional Papers, and Capstones

Fearless Dominance (FD) and Impulsive Antisociality (IA) are two personality traits often used in the study of psychopathic personality. FD is characterized by a lack of empathy, resilience to stress, and social potency, while IA is marked by impulsivity, selfishness, and manipulativeness. The current trio of studies sought to expand the use of FD and IA to assess psychopathology more generally. Study 1 consisted of a meta-analysis of all the relationships between FD/IA and various forms of psychopathology. Results affirmed that FD and IA each correlate with a variety of different psychological disorders, each to varying degrees of magnitude, but …

Identifying Clinical Profiles In A Community Sample Of Youth With Selective Mutism, Melanie Rede

UNLV Theses, Dissertations, Professional Papers, and Capstones

Selective mutism (SM) refers to a consistent failure to speak in social situations that have an expectation for speaking, despite fluent speech in other situations (American Psychiatric Association, 2013). Recent researchers describe SM as a heterogeneous disorder not always characterized by anxiety (Driessen et al., 2020). Specifically, some have argued that SM may be better explained as a neurodevelopmental rather than an anxiety disorder (Kearney & Rede, 2021). The aim of the present study was to find unique classes for anxiety, oppositional, and communication difficulties among youth with SM. Participants included 129 caregivers of youth with SM aged 6–14 years …

Examination Of Performance Validity And The Relationship To Cognition And Symptoms In Schizophrenia Spectrum Disorders, Erick A. Rogers

UNLV Theses, Dissertations, Professional Papers, and Capstones

Approximately one-in-five individuals with psychotic disorders (i.e., schizophrenia spectrum disorders [SSD]) fail performance validity indicators (PVIs) during neurocognitive testing. Ensuring the validity of neurocognitive test results is necessary if the test scores are to be of use for diagnostic consideration, intervention selection and planning, predicting outcomes, and following changes in cognition over time in response to intervention, spontaneous recovery, or disease progression. PVIs are designed to require only a minimum level of engagement with the evaluation, which means nearly everyone is expected to “pass,” even those with moderate to severe brain damage. Traditional interpretations of PVI failure suggest a noncredible …

Measurement Invariance Of Impact In Bilingual And Monolingual High School Athletes, Hana Cecilia Kuwabara

UNLV Theses, Dissertations, Professional Papers, and Capstones

Given the reported negative consequences of sport related concussion (SRC), establishing the validity of concussion management tools is essential if they are used to determine the severity of concussion, track recovery or decline, implement effective interventions, and assist in return-to-play decision making. Previous research has found cognitive and symptoms differences on ImPACT, the most widely used SRC assessment measure, between monolingual and bilingual student athletes. Before further investigation of these differences can occur, measurement invariance of ImPACT must be established to ensure that differences are not attributable to measurement error. The current study has two aims: 1) to replicate a …

The Relationship Between Psychopathy And Sexism Across Self-Report, Vignette, And Novel Dialogue Tree Tasks, Arianne Fisher

UNLV Theses, Dissertations, Professional Papers, and Capstones

Psychopathy is a personality construct consisting of a number of traits often associated with what many consider to be the “dark side” of personality. Multiple models and associated measurement tools have been created in an attempt to conceptualize psychopathy, but the field has not reached a consensus in its definition of this construct at this time. Across models, psychopathy is associated with a number of negative attitudes and behaviors, including various forms of prejudice. The relationship between psychopathy and one form of prejudice has not been examined, constituting a serious gap in the literature. This form of prejudice is ambivalent …

Examining The Factor Structures Of The Erq-Ca, Rcads, And Rsca To Identify Unique Predictors Of Ptsd Symptom Clusters In Maltreated Youth, Amanda N. Howard

UNLV Theses, Dissertations, Professional Papers, and Capstones

Youth who have experienced maltreatment have a higher risk of developing posttraumatic disorder (PTSD), which is associated with poorer mental and behavioral health outcomes including emotion dysregulation, anxiety, depression, and lower resiliency. At present, the literature largely focuses on youth who have experienced general trauma or PTSD symptoms, while maltreated youth are vastly understudied. The present investigation was the first study to date to examine the factor structures of the Emotion Regulation Questionnaire for Children and Adolescents (ERQ-CA), the Revised Child Anxiety and Depression Scale (RCADS), and the Resiliency Scale for Children and Adolescents (RSCA) in a sample of maltreated …

Clinical Utility Of The Substance Use Items Of The Sport Interference Checklist In Collegiate Athletes, Igor Kowal

UNLV Theses, Dissertations, Professional Papers, and Capstones

Collegiate sports are growing in popularity (National Collegiate Athletic Association, 2022) and pressure to perform (van Raalte & Posteher, 2019); leading to difficulties in collegiate athletes’ mental health (Rice et al., 2016), particularly in regard to increased substance use (Wilson et al., 2021). Current literature demonstrates that existing substance use assessments are most likely not answered truthfully by athletes (van den Berg et al., 2018), are not applicable to real-world contexts, can be intrusive, and are expensive to administer. In the current study, psychometric properties of items from a self-report measure of substance use interference with sport training and competition …

Initial Development And Psychometric Evaluation Of The Mental Health Optimization Checklist (Mhoc), Raymond E. López

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: The Mental Health Optimization Checklist (MHOC) is a proposed measure which utilizes the theory of optimization science to improve mental health outcomes. Psychopathology is typically viewed dichotomously (i.e., does or does not have a disorder) or through cut-off criterion (i.e., 4 out of 5 symptoms, total scores), whereas optimization views psychopathology on a continuum on which patients can optimize factors impacting their mental health. Optimization theory is important for reducing stigma around mental health treatment and the MHOC offers itself as an informative psycho-diagnostic tool.

Methods: An undergraduate student sample (n = 682) completed the MHOC and the Symptom …

Cultural Mechanism Of Mothers' Perceptions Of Youth Psychopathology, Yen-Ling Chen

UNLV Theses, Dissertations, Professional Papers, and Capstones

Cross-cultural research systematically identifies variations in cultural practices, meanings, and responses across different cultural groups. For example, psychiatric symptoms vary in their salience and degree to which they are reported across cultures. Cultural differences in causal attributions likely lead to differences in an individual’s help-seeking intention. However, there are limitations in previous cross-cultural studies about perceptions of psychopathology, including not measuring impairment level and parental distress, as well as the problematic use of categorical variables as predictors. To overcome limitations in previous work, the current project examined the cultural mechanism of mothers’ perceptions of externalizing and internalizing psychopathology in youth. …

Fear Of Recurrence As A Mediator Of Illness Perception And Perceived Stress In Acute Myocardial Infarction Survivors, Sarah E. Zvonar

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: The primary objective of this study is to evaluate fear of recurrence as a mediator of illness perception and perceived stress. This research will determine how illness perceptions and fear of recurrence affect perceived stress in the acute myocardial infarction (AMI) population. Other aims will observe how demographics predict patients who may experience increased fear of recurrence and stress in the AMI population, how the variables of fear of recurrence change over time, and if fear of recurrence is still a significant mediator after controlling for depression and anxiety.Rational/ Conceptual Basis/ Background: Acute myocardial infarctions (AMIs) are often accompanied …

Examining The Effects Of Perspective-Taking And Empathetic Concern On Attractiveness Biases In Millennial And Generation X Adults, Stephanie Verba-Quinones

UNLV Theses, Dissertations, Professional Papers, and Capstones

The current study examined the effects of perspective-taking and empathetic concern on attractiveness biases and stereotypes in Generation X and Millennial adults. Such biases and stereotypes are pervasive and can lead to preferential treatment and differential outcomes for individuals of varying attractiveness levels (see Langlois et al., 2000 for review). Previous research suggests that social media may amplify the importance placed on attractiveness, particularly for women (Fardouly et al., 2015; Perloff, 2014; Tiggemann et al., 2014; Toma & Hancock, 2018). Given the negative impacts of biases and stereotypes, this study sought to investigate pathways to reduce attractiveness biases and stereotypes …

Individual Differences In Police Officers’ Decision Styles In Order Maintenance Policing, Damarrah Elisheba Jameson

UNLV Theses, Dissertations, Professional Papers, and Capstones

Day-to-day police work tends to be in order maintenance policing. These encounters necessitate officer discretion in decision responses to manage them. These decision responses reflect an officer’s decision style which precedes the encounter and drives subsequent decision making to manage them. However, little is known about officer-level decision style. For example, whether an officer has a rational, intuitive, dependent, avoidant, or spontaneous decision style (Scott& Bruce, 1995). Police training in any format often lacks attention to decision styles. As such, an officer’s decision style is most likely associated with demographics (e.g., age, gender) and occupational self-efficacy – a reflection of …

Developmental Differences In School Climate Predictors Of Chronic School Absenteeism, Michael Fensken

UNLV Theses, Dissertations, Professional Papers, and Capstones

School attendance problems (SAPs) represent a critical developmental challenge for youth. SAPs represent a spectrum from difficulties attending school despite complete school attendance to complete absence. Ongoing SAPs can lead to chronic absenteeism, which may be defined as missing 8.3–10.0% (15–18 days) of school in an academic year. However, debate exists over the utility of a demarcation for chronic absenteeism. A shortcoming of cutoffs to defining problematic chronic absenteeism is that demographic, academic, symptom, and family variables are not delineated clearly. Yet, the present intervention frameworks (e.g., multi-tiered systems of supports models; MTSS) rely on clear delineations of such variables …

Comparing Comics And Illustrated Texts In Multimedia Learning, Jackson S. Pelzner

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this research was to examine how different forms of media, in particular science comics and illustrated texts, contribute to different patterns of learning. While the standard illustrated text seen in a textbook has been a useful tool for instruction, science comics appear to be an alternative that could be used in lieu of media that use the traditional illustrated text format. The comic format, known more for its visual appeal to readers, is consistent with the principles of the Cognitive Theory of Multimedia Learning (Mayer, 2009), though comprehension may require different mechanisms (Cohn, 2013a). It was hypothesized …

Gender Differences In Internalizing Problems And Everyday Behaviors Associated With Executive Function In Children And Adolescents With Autism Spectrum Disorder, Hiroko Mullner

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: Many children with autism spectrum disorder (ASD) experience internalizing problems, and there was evidence suggesting that poor executive function (EF) predicted their internalizing problems. However, this association was primarily found in studies with male children with ASD. Therefore, the present study aimed to investigate gender differences in internalizing problems and everyday EF in ASD children (age 5-15) and examined the associations between internalizing problems and everyday EF.Method: This study examined neuropsychological assessment data of ASD children without intellectual disability. The study consisted of two groups: 1. ASD boys (n = 44), 2. ASD girls (n = 15). The study …

An Examination Of The Association Of Religiosity, Purity Culture, And Religious Trauma With Symptoms Of Depression And Anxiety, Kaelyn R. Griffin

UNLV Theses, Dissertations, Professional Papers, and Capstones

While no consistent definition yet exists for religious trauma, religious abuse is typically defined as a misuse of authority by a spiritual leader to coerce, control, or exploit those under their leadership, which may in turn lead to the experience of religious trauma. Numerous studies suggest that experiencing abuse within a religious environment is a both global phenomenon and common experience. The impact of religious abuse has recently gained greater media attention, specifically related to the social and psychological impact of leaving high-cost religious groups (i.e., those with rigid rules or groups from which departure leads to isolation and rejection …

The Effect Of Sleep And Emotion On Pattern Separation, Alanna N. Osmanski

UNLV Theses, Dissertations, Professional Papers, and Capstones

Prior work on the relationship between sleep and memory suggests that the sleep state is an optimal time for memory consolidation to occur. During slow wave sleep, newly encoded information in the hippocampus is repeatedly activated, driven by slow oscillations that originate in the neocortex. This process that occurs during slow wave sleep facilitates the long-term storage of memories. A widely accepted view of emotion and sleep is that emotional memories are preferentially consolidated during sleep so that they are easily accessible for retrieval, whereas neutral memories tend to be less accessible. However, recent meta-analyses of sleep, emotion, and memory …

The Influence Of Prediction Error Strength On Reconsolidation, Kevin D. Mohawk

UNLV Theses, Dissertations, Professional Papers, and Capstones

It has been well established that consolidated memories can be reactivated and enter a labile state where they are once again vulnerable to modification. Reactivated memories, therefore, need to be restabilized or reconsolidated. Prediction error (PE) is one of the most common ways of reactivating consolidated memories, yet no studies have examined how varying the strength of PE influences reconsolidation. The present study aimed to determine if the strength of PE is an important factor for triggering reconsolidation and if so, how PE strength influences the reconsolidation process, whether through strengthening or weakening the memory. To vary PE strength, participants …

Multiple Approaches To Examining Gender Norms In Romantic Relationships, Carrie Underwood

UNLV Theses, Dissertations, Professional Papers, and Capstones

Romantic relationships are essential to the human experience, and gender stereotypes are so ingrained they can be automatic. In this dissertation, I address three empirical questions through both quantitative and qualitative research methods, all of which contribute to the growing body of literature on gender norms and romantic relationships. In Chapter 2, I present a mixed-methods study that examines how heterosexual men reason about benevolent sexism. Results revealed themes of equality in the workplace and men’s roles as providers. In Chapter 4 I implemented a two-study research design to understand how heterosexual women and men reason about troubled romantic relationships. …

How Medical Students Use Social Support To Cope With Burnout: A Grounded Theory Approah, Michelle Nicole I. Janeo

UNLV Theses, Dissertations, Professional Papers, and Capstones

Medical education to become a physician is a rigorous training process resulting in high rates of burnout in medical students. Research on burnout in human service providers results in negative impacts on professionalism, well-being, and the future healthcare workforce. Previous research investigating strategies to combat burnout has demonstrated that resilience is a dominant explanation for recovery from burnout. There is limited data exploring how social support is used by medical students as a resource to cope with the demands of training. Considering that social support is one primary factor that contributes to resilience, it is important to understand the process …

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 …

Dimensionality Of Natural Auditory Scene Perception: A Factor Analysis Study, Margaret A. Mcmullin

UNLV Theses, Dissertations, Professional Papers, and Capstones

Theories of auditory and visual scene analysis suggest the perception of scenes relies on the identification and segregation of objects within it, resembling a detail-oriented processing style, but it is possible that a global-oriented process also occurs while evaluating auditory scenes. There is evidence for global properties that enable rapid recognition of visual scenes, even without recognizing the individual objects comprising the scene. It is our understanding that a similar line of research has not been explored in the auditory domain; therefore, we evaluated the contributions of high-level global and low-level acoustic information to auditory scene perception. A secondary aim …

Beyond The Numbers: A Deeper Dive Into The Dearth Of Girls And Women In Stem, Jennifer John Buck

UNLV Theses, Dissertations, Professional Papers, and Capstones

Despite decades of research attempting to better understand the dearth of girls and women in science, technology, engineering, and math (STEM), gender imbalances persist in many STEM fields. This is particularly the case in math-intensive STEM fields. The current program of research used mixed-methods research to better understand these inequities. The first paper identified gender and ethnic variation in how undergraduates reason about STEM inequities. The second paper found that how emerging adults narrate “turning points” in their relationship with math was associated with their current math outcomes and future plans to pursue math. The final paper demonstrated that how …

Examination Of The Relationship Between Loneliness And Binge Eating Symptoms, Kimberly Stevens

UNLV Theses, Dissertations, Professional Papers, and Capstones

Loneliness is implicated in several mental health conditions and may also be linked to eating pathology, like binge eating symptoms (e.g., loss-of-control eating). However, the pathways by which loneliness might be associated with binge eating symptoms are less well understood. Preliminary evidence suggests perceived stress may be a key explanatory pathway. Specifically, perceived stress mediates the impact of loneliness on other mental health outcomes and is associated with increased risk of binge eating symptoms. This study investigated relationships between loneliness, perceived stress, and binge eating symptoms and tested whether heightened levels of binge eating was accounted for by increases in …

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 …

Comparing Forgetting Rates Between Pattern Separation And Item Recognition, Rhiannon N. Soriano Smith

UNLV Theses, Dissertations, Professional Papers, and Capstones

Recent theories of forgetting posit that hippocampally-based memory representations are more prone to be forgotten due to decay, while extra-hippocampal representations are more likely to be forgotten due to interference (Hardt, Nader, & Nadel, 2013; Sadeh & Pertzov, 2020). The current study examined this hypothesis by comparing the rate of forgetting between pattern separation, a hippocampally-based process, and item recognition, a process that is reliant on both hippocampal and extra-hippocampal structures. It was hypothesized that pattern separation would display more forgetting due to decay because it is a hippocampally-based process, while item recognition would display more forgetting due to interference …

Disentangling Instrumental And Reactive Aggression In The Competitive Reaction Time Task And Their Associations With Factors Of Meanness In Psychopathy, Ashley Michelle Poston

UNLV Theses, Dissertations, Professional Papers, and Capstones

Aggression is often subtyped into reactive and instrumental aggression. Reactive aggression occurs in response to some form of provocation and is often accompanied by anger. Instrumental aggression is not provoked and is relatively unemotional. Existing aggression paradigms primarily measure reactive aggression, and the laboratory measurement of instrumental aggression has proved challenging. This study modified the competitive reaction time task to include an entire block of instrumental aggression trials, in addition to the standard block of reactive trials, in effort to create a single paradigm within which both reactive and instrumental aggression can be measured in the laboratory. Psychopathy is a …

Methods For Teaching Mindfulness Within The Workplace, Gerrel March

UNLV Theses, Dissertations, Professional Papers, and Capstones

Over the past few years, the world has been shaken by the COVID-19 pandemic and technological advancements that have contributed towards work-life imbalances. Now more than ever, organizations are focusing on improving mental health and well-being. This understanding holds value towards the hospitality industry as employee wellbeing has a direct link towards consumer experience. Considering the nature of the business, employees endure distress resulting from emotional labor, long work hours, etc, understanding how organizations can improve well-being is critical. This paper attempts to make significant contribution towards understanding both individual and organizational outcomes of mindfulness, best practices, and potential limitations …

Utilizing Nonparametric Statistical Methods To Inform Equitable And Inclusive Mtss Models Of School Attendance/Problems, Victoria Bacon

UNLV Theses, Dissertations, Professional Papers, and Capstones

School attendance/problems are a key focus of educational policy. Critical approaches to educational policy stress the importance of nontraditional methods that are inclusive of the needs of students from marginalized or minoritized groups. Students in these groups are already at an increased risk for school attendance problems due to complex systems interactions, and bolstering protective factors at the school level may be one way to promote inclusivity and equity. MTSS models are well suited to address attendance, and bolstering protective factors on a large-scale would fall under Tier 1 preventative efforts. School climate is one such protective factor that could …