Medicine and Health Sciences Commons^™

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 …

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 …

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 …

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 …

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 …

Cognitive Testing For Sport Concussion: The Immediate Post-Concussion Assessment And Cognitive Testing (Impact), Julia E. Maietta

UNLV Theses, Dissertations, Professional Papers, and Capstones

Sport concussion is among the most common injuries for an athlete to experience during sport participation. Because of the complex pathophysiological process that affects the brain during and after concussion, symptoms can be heterogeneous in presence and severity. Although most acute symptoms (e.g., headache, slowed processing speed, loss of consciousness, irritability, depression, anxiety) resolve within seven to 10 days for most athletes, there is evidence that higher initial symptom burden and other genetically based differences can lead to longer symptom duration and complicated recovery post-concussion. Because structural changes that commonly occur as a result of concussion (e.g., diffuse axonal injury) …

Awareness And Knowledge On Aging And Hiv-Associated Neurocognitive Disorder: Service User And Provider Perspectives In Southern Nevada, Brandon C. Ranuschio

UNLV Theses, Dissertations, Professional Papers, and Capstones

HIV-Associated Neurocognitive Disorder (HAND) is a condition that can affect up to 50% of people living with HIV/AIDS (PLWH) and present as a cluster of neurocognitive difficulties in domains such as attention, memory, concentration, language, information processing, decision-making, problem-solving, and even motor skills. The current study intended to identify awareness and knowledge of HAND among middle-aged and older PLWH and their healthcare or service providers in Southern Nevada. Using a Community-Based Participatory Research approach, participants from the community were recruited to complete a survey that assessed awareness and knowledge of HAND. The survey also assessed the personal experiences of PLWH …

The Occupational Therapy Approach To Pain Treatment: A Pain Curriculum, Rosalee Howell

UNLV Theses, Dissertations, Professional Papers, and Capstones

It is within the scope of the occupational therapy profession to treat patients experiencing pain. The holistic approach used to assess and treat patients to improve functional performance is vital in treating pain. The focus is to decrease the detrimental impact of pain on the patient’s mental health, enhancing their ability to function in social and vocational roles. However, education is not adequately addressed in occupational therapy programs and is vital in preparing clinicians to meet the patient’s needs effectively.

This Doctoral Capstone was developed to highlight the importance and the benefit of education in preparing clinicians to treat patients …

The Effects Of Executive Function Between Anxiety And Math Achievement In Adolescents, Mckenzie Hall

UNLV Theses, Dissertations, Professional Papers, and Capstones

Anxiety in Children can develop into pervasive disorders in adulthood if not treated. Research shows dysfunctional Executive Function (EF) and anxiety are both shown to have a negative impact on math achievement in children and adolescents (Trezise & Reeve, 2018; Kalaycioglu, 2015; Owens, Stevenson, Hadwin & Norgate, 2012). Chung, Weyandt, and Swentosky (2014) found biological and neuropsychological support for EF as a unitary and multifaceted processor for regulating our emotional states as well as our daily procedures. Anderson’s (2002) model of Executive Control System (ECS) allows the factors of EF to be examined using a developmental approach towards EF processes. …

Multiple Approaches To Auditory Rhythm: Development Of Sustained Musical Beat And The Relation To Language, Development Of Rhythmic Categories Via Iterated Production, And A Meta-Analytic Study Of Neural Entrainment To Beat, Karli Marie Nave

UNLV Theses, Dissertations, Professional Papers, and Capstones

Rhythm is ubiquitous to human communication, coordination, and experience of music. In this dissertation, I address three empirical questions through three different methodologies, all of which contribute to the growing body of literature on human auditory rhythm processing. In Chapter 2, I present a registered report detailing the results of independent conceptual replications of Nozaradan, Peretz, Missal, & Mouraux (2011), all using the same vetted protocol. Listeners performed the same tasks as in Nozaradan et al. (2011), with the addition of behavioral measures of perception. In neuroscience, neural correlates to musical beat perception have been identified, yet little to no …

Are Gaming And Gambling Disorders Related? Examining The Roles Of Money, Relative Deprivation, And Upward Mobility, Anthony J. King

UNLV Theses, Dissertations, Professional Papers, and Capstones

Few studies have examined the financial motives and risks involved in modern video games, as well as the psychosocial factors contributing to this type of gaming involvement. Previous research on gambling has shown financial motives alone to be a major risk factor for the development of gambling disorder, with higher levels of personal relative deprivation (PRD) identified as a main contributor to this relationship. Therefore, the present study investigated whether this association applied to US adult video gamers, and if it would predict their problematic gaming behaviors. We hypothesized PRD and gaming disorder severity would have a positive association, with …

The Prevalence And Predictors Of Complementary And Alternative Medicine (Cam) Use Among Racially/Ethnically Diverse College Students, Hermella Misiker

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: National data on complementary and alternative medicine (CAM) use, available through the National Health Interview Survey (NHIS), convey higher prevalence of CAM use among college students compared to the general U.S population. NHIS findings also highlight non-vitamin non- mineral (NVNM) products are the most widely used form of CAM in the U.S. The purpose of this study was to identify the socio-cognitive and demographic predictors of CAM and NVNM use among a racially/ethnically diverse college student body.

Methods: An online survey was used to collect data from 392 University of Nevada, Las Vegas (UNLV) undergraduate, graduate, and professional students. …

Functional Capacity Profiles In Bipolar Disorder And Schizophrenia, Ashley Sara Emami

UNLV Theses, Dissertations, Professional Papers, and Capstones

Serious mental illnesses (SMIs) often have an onset early in life and go on to produce disability and functional impairment, which require ongoing supportive services and loss of productivity. Bipolar disorder (BD) and schizophrenia (SZ) are two of the most common SMIs. BD and SZ differ in their pattern of neurocognitive performance, which suggests differences in the severity of functional impairment between the illness groups. Within these psychiatric illness groups, subgroups may also be identified using cluster analysis. Evidence points to heterogeneity in functional outcomes in BD and SZ, yet very little research has assessed for subgroups based on functional …

Examination Of Factors Reported By Athletes To Interfere With Their Lives Outside Of Sports, Jesse Scott

UNLV Theses, Dissertations, Professional Papers, and Capstones

The original Sport Interference Checklist (SIC) is a mental-health screening instrument designed to assess the extent to which mental health factors interfere with athletes’ performance during sport training or competition. In addition, the SIC appraises whether athletes are interested in pursuing psychological treatment for the aforementioned factors. Although validated, the SIC does not assess how the aforementioned factors affect athletes’ performance outside of sports. Doing so would permit professionals to examine the influence of these factors across sport training, sport competition, and life outside of sports.

The purpose of this study was to determine the psychometric properties and clinical utility …

Memory And Stereotypes For Lesbian/Gay Characters, Amber Rose Williams

UNLV Theses, Dissertations, Professional Papers, and Capstones

Stereotype-consistency bias refers to the idea that people tend to remember stereotypical information about others better than non-stereotypical information (Fyock & Stangor, 1994). Limited research has examined how people may use stereotype-consistency bias when recalling information about LGBT characters in narratives (Bellezza & Bower, 1981; Clark & Woll, 1981; McGann & Goodwin, 2007; Snyder & Uranowitz, 1978). This line of research suggests that, instead of genuinely remembering stereotypical information better, participants tended to guess stereotypical answers to questions they do not know. In contrast to those studies, the experiment I conducted for this thesis suggests that heterosexual young adults tend …

Depressive Symptoms As A Moderator Of Diurnal Trends In Reward Seeking, Erick Albert William Rogers

UNLV Theses, Dissertations, Professional Papers, and Capstones

Anhedonia, a cardinal symptom of a major depressive episode, is the decreased motivation to seek rewards. Individuals with depressive symptoms tend to report reduced positive affect, a distal measure of reward motivation, and engage in less reward-motivated behavior (i.e., reward seeking). However, diurnal rhythms may also influence reward-seeking. Both self-reported positive affect and behavioral measures of reward-seeking increase from the morning to the afternoon and then decreased in the evening. Therefore, the aim of this study was to examine whether reward-seeking varied across time of day and whether anhedonia moderated variation. Overall, reward-seeking did not vary across time of day. …

Visual Attention And Emotion Regulation In Schizophrenia, Bern Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

Emotion regulation and emotion processing deficits cut across the varying symptom presentations of schizophrenia. Emotion processing deficits are inadequately treated by pharmacologic interventions and are related to real-world functional impact and disability. This study investigated behavioral and psychophysiological responses to a series of emotion regulation tasks while concurrently collecting eye tracking data as an index of visual attention. A brief neurocognitive assessment was also completed in order to examine potential cognitive determinants of emotion. Participants completed tasks designed to assess cognitive change and directed attention strategies for down-regulation of unpleasant and pleasant emotion. For each of our two unpleasant emotion …

Animal Assisted Therapy And Support Animals, What Mental Health Professionals Know And Understand, Alexandro H. Velez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Animal-assisted therapy can greatly benefit mental health professionals with clients in and out of the school settings in many ways. It is believed mental health professionals are successfully implementing Animal Assisted Therapy, even though some are not. Mental health professionals who are not using Animal Assisted Therapy are not doing so as the result of various variables, such as lack of information, knowledge, training, certification and policies, which prevents them from using Animals Assisted Therapy with clients and the community. It is also believed some mental health professionals are using animals as part of therapeutic interventions without proper training. The …

A Controlled Examination Of Motivational Strategies: Reviewing Positive Consequences For Goal Achievement, Negative Consequences For Undesired Behavior, And A Relaxation Exercise, Yulia Gavrilova

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: Motivation is an integral part of human life and one of the most fundamental aspects of behavior change. Of interest to the present study are two motivational approaches, Negative Consequences Review (NCR) and Positive Consequences Review (PCR). NCR is an intervention component originally designed as part of Family Behavior Therapy (FBT) to motivate individuals with their goals through a discussion of negative consequences associated with undesired behaviors. PCR was developed as an auxiliary component of FBT to inspire individuals’ motivation to achieve their goals through a discussion about positive consequences of reaching goals. Purpose: The purpose of this study …

Examination Of A Screening Tool For Athletes’ Mental Health And Its Direct Implications To Sport Training And Competition, Jesse Scott

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Sport Interference Checklist (SIC) is a psychometrically validated instrument designed to assess how often cognitive and behavioral factors interfere with athletes performance during training and/or competition as well as the extent to which athletes are interested in pursuing sport psychology to address these problems. The success of this scale inspired an interest in developing new items that assess the influence of specific mental health concerns on sport performance using the SIC format. The Sport Interference Checklist’s Sport Specific Screen for Mental Health (SIC-SSSMH) was empirically developed using 259 athletes to assist in the identification of mental health problems explicitly …

Sex Worker And Proud: A Phenomenological Study Of Consensual Sex Workers' Lives, Michael Gerald Curtis Jr.

UNLV Theses, Dissertations, Professional Papers, and Capstones

Ten consensual sex workers who were currently working in Nevada were qualitatively interviewed in an effort to explore their perceptions of the adult industry. Interviews specifically focused on their experience disclosing their profession to others and the potential effects that it has on their personal relationships, and access to effective treatment. The Moustakas method of phenomenological inquiry was used to analyze data from ten participants who self-identified as direct sex workers. Seven essential themes emerged from this analysis: (1) the adult industry provides professional and personal agency, (2) the industry is often transient, (3) disclosure is an impactful and ongoing …

Parents' Perceptions Of Smartphone Use And Parenting Practices, David Jackson Johnson

UNLV Theses, Dissertations, Professional Papers, and Capstones

The present study is a qualitative examination aiming to gain insight into parents’ perceptions of their smartphone use and the effects it may be having on their children as well as parenting practices. Participants (N=12) were smartphone using parents that consisted mostly of young college-educated females. Thematic analysis of individual interviews resulted in five primary themes: (1) Disengagement, (2) Concern for Future, (3) Change in Social Norms, (4) Boundaries, and (5) Cognitive Dissonance. These findings indicate significant effects parental smartphone use is having in the lives of study participants. These thematic findings call for additional research examining the impact parental …

Attitudes, Attachment Styles, And Gender: Implications On Perceptions Of Infidelity, Christian M. Stewart

UNLV Theses, Dissertations, Professional Papers, and Capstones

Understanding the impact infidelity has on individuals, couples, families, and societies has increasingly become a topic of interest over the last few decades. In recent years, scholars have sought to increase understanding of infidelity through investigating the relationship between infidelity and attachment theory. This research study examines the impact attitudes about infidelity, attachment styles, and gender have on the way in which individuals perceive infidelity. Data was gathered from 310 participants recruited from the University of Nevada, Las Vegas and social media. Participants were 18 years of age and older and were, at the time of the study, either in …

The Psychophysiological Correlates Of Personality, Trauma, Posttraumatic Stress Disorder And Social Support, Meghan E. Pierce

UNLV Theses, Dissertations, Professional Papers, and Capstones

Theories considering the etiology of psychopathy suggest that trauma exposure, specifically childhood maltreatment and sexual abuse, is related to the development of callous-unemotional traits in children and adolescents, which are precursors to psychopathic traits in adulthood. Furthermore, posttraumatic stress disorder has an opposite relationship with many of the emotional and behavioral components of the two-factor model of psychopathy. Specifically, PTSD is positively associated to IA and traits associated with it and negatively associated with FD. Thus, this study sought to expand upon the current theories of a trauma-based etiology of psychopathy by investigating the relationship between trauma, PTSD, and psychopathic …

Temperament And Behavior Factors In A Community Sample Of Youth With Selective Mutism, Rachele Alexandra Diliberto

UNLV Theses, Dissertations, Professional Papers, and Capstones

Children with selective mutism often present as a very diverse population, with both oppositional (APA, 2013; Cohan et al., 2008; Steinhausen & Juzi, 1996), and anxious symptoms (APA, 2013; Kristensen, 2000; Vecchio & Kearney, 2009) most commonly reported. The first aim of the current study was to validate the presence of previously identified anxious and oppositional behavior factors in a community sample of youth with selective mutism. These factors were previously identified in a clinic sample of youth with selective mutism (Diliberto & Kearney, 2016). The second aim was to examine the association of anxious and oppositional behavior factors with …

Neural Processes Underlying Auditory Context Effects, Breanne Yerkes

UNLV Theses, Dissertations, Professional Papers, and Capstones

Auditory information within our natural environments is disorganized and often ambiguous, leaving our auditory systems with a complex task: organizing sound into coherent objects. The auditory system uses both current and prior information to assist in completing this task. The influences of previous context on current perception have been referred to as context effects. A contrastive context effect results in a current perception that is opposite of what is expected based on the physical stimulus properties presented during an immediate context. A facilitative context effect results in a current perception that is the same as the perception during the immediate …

Assessing Clinical Significance Of The Immediate Post-Concussion Assessment And Cognitive Testing Battery When Comparing Adjusted And Unadjusted Rci Methods For Different Ranges Of Baseline Scores, Ashley N. Figaro

UNLV Theses, Dissertations, Professional Papers, and Capstones

The growing concern revolving around the dangers of sports-related concussions have led to the most recent implementation of neurocognitive (NC) test batteries as a means to objectively determine the presence of a cognitive defect. Whereas any other sports-related injury can be diagnosed with tools such as an x-ray or MRI, a concussion represents a metabolic disturbance that cannot be identified by these diagnostic tools. Many neurocognitive test batteries employ statistical techniques to derive cut off scores in order to represent significant or insignificant changes as compared to individual baseline scores, or pre-established normative values. If an individuals’ post-injury score exceeds …

Concurrent Mental Health And Sport Performance Enhancement In An Athlete Initiating Behavioral Intervention With No Assessed Pathology: A Case Examination Supporting Optimization, Yulia Gavrilova

UNLV Theses, Dissertations, Professional Papers, and Capstones

Collegiate athletes are often exposed to unique environmental stressors that may negatively impact the way they think, behave, and feel in athletic, academic, and social domains, potentially compromising their performance and mental health when cognitive and behavioral skills are relatively underdeveloped. Behavioral interventions have been shown to enhance cognitive and behavioral skills in persons with assessed mental health deficits in the general population. However, little is known about the relative effects of psychologically-based programs in persons who do not evidence pathology. Along these lines, The Optimum Performance Program in Sports (TOPPS), based on Family Behavior Therapy, was recently developed with …

The Development Of Sexual Attitudes In The Family Of Origin And Sexual Satisfaction Later In Life, Bryant Christlieb

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to determine if variance for individuals’ sexual satisfaction as well as attitudes toward sexual instrumentality, sexual permissiveness, sexual communion and attitudes could be predicted by family sexual communication during adolescence as well as various demographic factors such as age, years together, gender, race, income level, religion, religiosity and sexual orientation. This was done by recruiting 250 people via Mechanical Turk (www.mturk.com) and through undergraduate courses at the University of Nevada-Las Vegas. The researcher used an enter-method multiple regression model and Kendall’s Tau for non-parametric data. The results of this study show that sexual satisfaction …

The Effect Of Sleep On Perceptual Learning And Memory Consolidation, Vanessa Claire Irsik

UNLV Theses, Dissertations, Professional Papers, and Capstones

An ability to segregate speech accurately is essential given that most auditory environments contain other overlapping conversations or environmental noise. While perceiving speech among background noise can be difficult in and of itself, those with hearing impairments can experience considerable difficulty. While training has been shown to benefit perceptual segregation of trained sounds, it is unclear how such training transfers to sounds not included in a training regimen. The current study aimed to address this question by training listeners on a portion of sounds during a vowel segregation task, and subsequently testing on both the trained sounds and untrained sounds. …