Psychology Commons^™

Neuroimaging-Based Classification Of Ptsd Using Data-Driven Computational Approaches: A Multisite Big Data Study From The Enigma-Pgc Ptsd Consortium, Jacklynn M. Fitzgerald

Psychology Faculty Research and Publications

Background

Recent advances in data-driven computational approaches have been helpful in devising tools to objectively diagnose psychiatric disorders. However, current machine learning studies limited to small homogeneous samples, different methodologies, and different imaging collection protocols, limit the ability to directly compare and generalize their results. Here we aimed to classify individuals with PTSD versus controls and assess the generalizability using a large heterogeneous brain datasets from the ENIGMA-PGC PTSD Working group.

Methods

We analyzed brain MRI data from 3,477 structural-MRI; 2,495 resting state-fMRI; and 1,952 diffusion-MRI. First, we identified the brain features that best distinguish individuals with PTSD from controls …

Outcomes For Binge Eating Disorder In A Remote Weight-Inclusive Treatment Program: A Case Report, Caitlin B. Shepherd, Rebecca G. Boswell, Jessica Genet, Wendy Oliver-Pyatt, Christine Stockert, Rebecca Brumm, Shaun Riebl, Elsbeth Crowe

Psychology: Faculty Publications

Background: There are no known published reports on outcomes for medically and psychiatrically compromised patients with binge eating disorder (BED) treated remotely in higher level of care settings. This case report presents outcomes of an intentionally remote weight-inclusive partial hospitalization and intensive outpatient program based on Health at Every Size® and intuitive eating principles. Case presentation: The patient presented with an extensive trauma background and long history of disturbed eating and body image. She was diagnosed with BED along with several comorbidities, most notably major depressive disorder with suicidality and non-insulin dependent diabetes mellitus. She completed a total of 186 …

Behavioral Economic Factors In Collective Bargaining, Cristal Cardoso Sao Mateus Cardoso Sao Mateus

Masters Theses

The present study evaluated the effects of delay, stake, and hypothetical group size on labor valuation in the context of increasing and decreasing labor demand. Challenges in collective bargaining are associated with work stoppages, which can cause economic losses, lack of service, and worker stress. Participants were asked to value their labor given a set of conditions in two experiments. Participants in experiment 1 (n = 49) valued their labor in both increasing and decreasing demand context. Conversely, participants in experiment 2 (n = 139) valued their labor in only one of the contexts. Delay to changes, stake size, and …

“Fit Check”: Testing A Model Of Perceptions Of Team Level Person-Group Fit, Alexandria Wentworth

All Theses

Teams are become a mainstay in nearly every sector of business. Teams are complex and evolve to meet the demands of their unique environments. One team structure growing in popularity is a multiteam system (MTS), a system comprised of multiple teams working interdependently to achieve goals. Understanding the mechanisms by which a MTS is successful is challenging; however, the concept of fit may offer further explanation. Person-group fit has been shown to improve coworker satisfaction, job attitudes, and task performance. Most research has only explored individual-level outcomes of person-group fit, yet there are numerous calls for further exploration into team-level …

Emotion Regulation Flexibility: Investigating Perseverative Thinking As A Novel Context, Beatris Garcia

Arts & Sciences Graduate Student Theses and Dissertations

Emotion regulation (ER) flexibility is a rapidly evolving field within affective science. Current advances have identified context sensitivity as a leading method for measuring ER flexibility, largely focusing on affectivity and situational control as markers of context. In this study, we propose an innovative approach to expand the list of contextual features tied to ER flexibility by using a framework based on Perseverative Thinking (PT). We examined seven PT dimensions, including pleasantness, repetitiveness, self-focus, other-focus, certainty, controllability, and temporal orientation, along with six ER strategies: reappraisal, acceptance, problem solving, expressive suppression, distraction, and cognitive avoidance. Once a day over the …

How Prefixation, Onset Length, And Coda Length Determine Lexical Stress Assignment When Reading Aloud, Kayla Hensley

Arts & Sciences Graduate Student Theses and Dissertations

Lexical stress, or which syllable is emphasized in a multisyllabic word, can provide important cues for speech segmentation, lexical class, and reading acquisition. Despite this, much of the literature on reading has focused on single syllable words, neglecting the role that stress can play. In this project, I examine the role of prefixation, onset and coda length in assigning stress in disyllabic words when reading aloud. Study 1 is a corpus analysis of English words with grade level information to replicate the model developed by Treiman et al. 2020 and check for age differences. There were no significant differences on …

Discounting Of Delayed And Probabilistic Outcomes Across The Adult Lifespan, Haoran Wan

Arts & Sciences Graduate Student Theses and Dissertations

Intertemporal and risky decision-making predicts many problem behaviors that also decline with age, raising the question: Do intertemporal and risky decisions change with age? Despite the theoretical and empirical importance, the literature under both rubrics reveals inconsistent findings. Some studies suggest that these inconsistencies may be due to the presence of unassessed demographic differences. The present study examined age differences, evaluating the role of demographic variables in intertemporal and risky choice of gains and losses using the discounting framework. Four experiments were conducted, each with one of the four types of discounting: discounting of delayed gains, discounting of delayed losses, …

Between-Task Transfer Of Learned Control Settings: How Far Can It Go?, Merve Ileri Tayar

Arts & Sciences Graduate Student Theses and Dissertations

Learning-guided control refers to adjustments of cognitive control settings (i.e., relatively focused vs. relaxed) based on learned associations between predictive cues (e.g., stimulus features) and the likelihood of conflict. We investigated the transfer of learned control settings beyond the conditions under which they were learned to examine the flexibility and automaticity of these control settings. In Experiment 1, participants experienced an item-specific proportion congruence (ISPC) manipulation in a training phase in which target color in a Flanker task was biased (mostly congruent or mostly incongruent). Then, in a subsequent transfer phase, they performed a color-word Stroop task in which the …

Can Affective Symptomology Predict Somatic Complaints In Symptom Checklists?, Catherine E. Scales

Psychological Science Undergraduate Honors Theses

Introduction: Persistent and medically unexplained somatic symptoms are widespread and pose significant burden to the healthcare system as patients often overuse consultation services when seeking a diagnosis for their symptoms. In turn, this can lead to misdiagnosis and unnecessary treatment. Since somatic symptoms are commonly associated with affective disorders but are not always associated with any specific medical diagnoses, identifying accessible methods of better guiding diagnostic tendencies for clinicians should be a priority.

Methods: Participants (N = 114, Mean age = 18.9) were undergraduate students recruited from the University of Arkansas with no prescreening requirements. Linear regression analyses were utilized …

Under Pressure: A Daily Diary Study Of Online Social Influence And Youth Substance Use, Anna Dmitriyevna Ziencina

Open Access Theses & Dissertations

Alcohol and marijuana are widely used by youths across the U.S. [Substance Abuse and Mental Health Services Administration (SAMHSA), 2023], and youthsâ?? use of such substances comes with a myriad of consequences (e.g., increased risk for long-term substance abuse; Griffin et al., 2019). Social influence is one process through which youths may develop positive attitudes towards substance use (Steinberg & Monahan, 2007), but there is a dearth of research on how such influence operates within the online environment. The present study sought to examine associations between daily social media use and youthsâ?? daily attitudes towards alcohol and marijuana useâ??as well …

Project Silverlight: Community Based And Participant-Led Initiatives To Increase Civic Engagement Among Older Adults, Paulin T. Straughan, William Tov, Wensi Lim, Rachel Ngu, Yan Er Tan, Mindy Eiko Tadai

ROSA Research Briefs

Project Silverlight was a year-long project aimed at redefining social engagement and participation of older adults in the community. In this report, we share our findings from the project and key recommendations to community partners who are looking to adopt a similar model of participant-led programs. Our study found that by engaging student volunteers as a key partner in this initiative, participants showed a significant improvement in their perceptions of youth, and that participants derived a great sense of satisfaction from being involved in the curation of their activities.

The Future Of Terrorist Use Of Improvised Explosive Devices: Getting In Front Of An Evolving Threat, Austin C. Doctor, Samuel Hunter

Psychology Faculty Publications

Because of their outsized impact—as well as the wide availability of device components—violent extremists in the United States consider improvised explosive devices a valuable part of their arsenal. They are easy to make, difficult to combat, and cause significant harm and disruption. Yet this threat is not static. Violent extremists continue to innovate, drawing on emerging technologies and creative problem solving. The onus of initiative requires that the counterterrorism mission community looks over the horizon to identify emerging threats. In support of this need, the authors offer a forward-leaning taxonomy of emerging threats related to terrorist use of IEDs in …

Value Added By Using Joint Displays In Mixed Methods Research, Elizabeth Svoboda

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Mixed methods research collects, analyzes, and integrates rigorous qualitative and quantitative methods to gain a deeper understanding of a phenomenon than would be gained by using either method alone. Integration is one of the key features of mixed methods research and consists of mixing qualitative and quantitative research in a systematic way to generate new inferences or follow-up studies. However, the process of integration can be challenging to draw on expertise in both qualitative and quantitative methods, decide when and how to integrate qualitative and quantitative research, and combine multiple data sources in a coherent way to generate new inferences. …

Examining The Relations Between Obsessive Compulsive Disorder And Quality Of Life In A Transdiagnostic Eating Disorder Sample., Madison Rose Ortman

College of Arts & Sciences Senior Theses

Background: Eating disorders (EDs) are life threatening psychological disorders characterized by obsessions related to food, weight, and exercise. The presence of an eating disorders has been linked to poorer quality of life (QOL) and clinical impairment. Obsessive compulsive disorder (OCD) is a psychiatric disorder characterized by intrusive thoughts and ritualistic behaviors. EDs and OCD have similar symptom structure as well as similar independent relationships to QOL. The present study aimed to validate these relationships and extend the findings into a more fine-grained symptom analysis of the relationship between EDs, OCD and QOL. Method: Participants (N = 109) were those …

Evaluation Of A Cue Associated With Alternative Reinforcement To Mitigate Resurgence, Hayley Brown

Masters Theses

Treatment relapse due to the extinction of a previously reinforced alternative behavior is known as resurgence. Understanding the conditions under which resurgence is mitigated may be important for improving the maintenance of the effects of interventions. One method that has been found to effectively mitigate resurgence is pairing a cue or stimulus with alternative reinforcement and then continuing to present that cue when alternative reinforcement is terminated. Animal studies have found that cues must be paired with alternative reinforcement and target extinction to be effective. However, this finding has not yet been replicated with humans. Demonstration of a similar effect …

Class Size And Teacher Effects On Non-Cognitive Outcomes In Grades K-3: A Fixed Effects Analysis Of Ecls-K:2011 Data, Spyros Konstantopoulos, Ting Shen

Psychological Science Faculty Research & Creative Works

This study examines the association between class size, teacher characteristics and five non-cognitive student outcomes (i.e., self-control, interpersonal skills, approaches to learning, externalizing and internalizing problem behaviors) in grades K-3. Individual fixed-effects, that control for observed and unobserved time-invariant factors, including student and school time-constant variables, are employed to analyze national data from the Early Childhood Longitudinal Study, Kindergarten Class of 2010–11 (ECLS-K:2011). Results suggest a significant linear association between reducing class size and interpersonal skills. Teacher experience is saliently, positively and significantly related with student self-control, interpersonal skills, and approaches to learning, and negatively associated with externalizing problem behaviors. …

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 …

Examining Emotion Regulation Strategies As Predictors Of Posttraumatic And Depressive Symptomatology In Maltreated Youth, Kinsey Ellis

UNLV Theses, Dissertations, Professional Papers, and Capstones

Youth with a history of maltreatment victimization are at heightened risk for developing symptoms of posttraumatic stress and depression. Recent work has identified emotion dysregulation as a potential transdiagnostic mechanism linking maltreatment victimization to youth psychopathology, but few studies have examined the influence of specific emotion regulation strategies. Habitual utilization of expressive suppression and cognitive reappraisal have each demonstrated associations with trauma-related psychopathology in adults. The present study examined both strategies as predictors of posttraumatic and depressive symptomatology in youth with a history of maltreatment, as well as mediators in the relationship between the two conditions.

The sample included 133 …

Beyond The Surface: A Novel In-Game Behavioral Observation Matrix To Assess Video Game Expertise, Sam A. Leif

UNLV Theses, Dissertations, Professional Papers, and Capstones

In the evolving landscape of gaming, a need for reliable methods to differentiate expertise levels among players has emerged. This study defines experts by their exceptional skills, domain-specific knowledge, and successful application of these attributes in complex situations. Unlike conventional methods that rely on self-reported experience for expertise stratification, this research proposes a shift towards systematic behavioral observation for a more reliable assessment of expertise. The Model of Domain Learning (MDL) facilitates empirical differentiation between novice, competent, and expert categories, allowing for appropriate stratification. Drawing from digital proxemics theory and adapted from the behavioral assessment matrix used by McCreery and …

Development Of Cultural Familiarity Influences Musical Tempo, Jared W. Leslie

UNLV Theses, Dissertations, Professional Papers, and Capstones

Listeners perceive foreign speech as faster than native speech, even when there is no measurable difference in the speech rate. The mechanisms underlying this “Foreign Language Effect” are currently unknown, but one explanation is that as listeners acquire increasingly language-specific experience, they are able to parse the speech stimulus at increasingly slower levels of language structure (i.e., sentences or phrases rather than just syllables). This ability presumably gives riseto the perception that native speech is slower. Because music also has a hierarchical temporal structure, a similar phenomenon may also exist for tempo perception of culturally familiar and unfamiliar music. To …

Examining Oppressive Social Systems: Activism, Academics And Alpha Males, Kristin Dee Vierra

UNLV Theses, Dissertations, Professional Papers, and Capstones

Oppressive social systems are structures and institutions within society that systematically and unjustly restrict the rights, opportunities, and overall well-being of certain groups (Bonilla-Silva, 1997; Feagin, 2013). The current program of research aims to investigate how oppressive social systems impact individuals and explore strategies to address and counteract them. The first paper seeks to understand whether, why, and how people engage in critical action to support Black Lives Matter (BLM). The second paper examines undergraduates' perceptions of whether STEM research mentors should consider race when mentoring students from marginalized backgrounds. The final paper employs a meta-synthesis with the purpose of …

Integrated Behavioral-Health Supports: Combining Pbis And Sel At Tier 2, Thomas K. Franzmann

All Graduate Theses and Dissertations, Fall 2023 to Present

Childhood behavior problems present many challenges for youth, families, and schools. To assist in preventing and reducing such problems, schools have adopted various strategies to assist with such concerns. Two widely used strategies for addressing problem behavior in schools are Positive Behavioral Interventions and Supports (PBIS) and Social-Emotional Learning (SEL). While both have a plethora of evidence of their effectiveness independently, less is known as to whether than can compliment one another for even better outcomes. The current study examined the effectiveness of an integrated approach (PBIS + SEL) to classroom intervention for elementary school students exhibiting behavior problems. This …

A Systematic Review On Functional Analysis Of Noncompliance, Alyssa Hurd

All Graduate Theses and Dissertations, Fall 2023 to Present

Lack of following instructions is a common caregiver concern that can have adverse effects on the learner. Although certain behavioral assessments (i.e., functional analysis) are often employed for other forms of challenging behavior (e.g., aggression, property destruction) to determine why these behaviors are occurring (e.g., to gain attention, toys, or escape from instructions), these assessments are infrequently conducted to determine why a learner is not following instructions. Lack of following instructions is often hypothesized to be motivated by desire to escape from instructions. However, to date, no study has examined the prevalence of variables that motivate lack of following instructions …

Using Pavlovian Sign-Tracking To Increase Self-Control In Rats, Saba Mahmoudi

All Graduate Theses and Dissertations, Fall 2023 to Present

Impulsivity is correlated with various maladaptive behaviors (e.g., gambling and substance-used disorders), therefore many studies have been designed to find methods to reduce impulsive choice. Although these procedures (e.g., delay fading and delay-exposure training) are effective, they involve extended training durations. One method that has not yet been explored in promoting self-control is Pavlovian conditioning. During Pavlovian conditioning, a localized conditioned stimulus (CS) that signals an imminent food delivery can (a) evoke sign-tracking behavior (i.e., attraction to, and physically interacting with the CS) and (b) function as a conditioned reinforcer (i.e., the subject will work to access the CS). This …

The Intersectional Experiences Of Young And Educated Latine Men's Masculinity: An Exploration Of Gender, Race, Ethnicity, Skin Tone, Sexual Orientation, And Region Of Origin, Juan Estrada

All Graduate Theses and Dissertations, Fall 2023 to Present

Latine masculinity is often looked at through simplistic concepts like machismo or caballerismo, which fail to fully consider the different aspects of Latine men’s identities. For example, how might a cisgender, gay, dark skinned, Latine man understand his masculinity as he moves between Latine and United Statesian cultures. In this study, we wanted to do two things: first, we wanted to understand how the cultural and intersectional aspects of their lives shape how Latine men see their masculinity. Second, we wanted to celebrate the diverse ways in which they express their masculinity, considering things like their skin color, region …

Unmasking And Addressing Burnout In The Mental Health Profession, Sara Edwards

University Honors Theses

Burnout poses a significant challenge among mental health workers, impacting both the well-being of practitioners and the outcomes for their patients. The key inquiries guiding this literature review are: what factors contribute to burnout, and what interventions are essential for treating and preventing burnout in mental health professionals? The findings reveal that factors such as level of experience, lack of quality supervision, vicarious trauma, working conditions, and personal beliefs significantly contribute to burnout. Effective prevention and treatment measures for mental health workers vulnerable to burnout encompass self-monitoring, participation in support groups, additional training, and organizational interventions. These insights could serve …

Critical Consciousness & The Rural-Urban Divide, Kendall O'Rorke

University Honors Theses

This study investigated the relationship between conceptions of Critical Consciousness (CC) and urban vs. rural geographic location type. Participants (N = 31) completed the Short Critical Consciousness Scale (CCS-S), and 25 additional questions regarding potential location-based idealogical differences. No measurable differences were found regarding differences in conceptions of critical consciousness (using CCS-S scores) based on rural-urban location, however, other responses supported some current research regarding political typology. Additional research is needed to fully understand this topic.

Mi Casa Sin Mí Parada No Es Casa: Conceptualizations Of Functioning And Functional Impairment In Rural Chiapas, Mexico, Sarah Joy Hartman, Néstor Noyola, Viena Murillo, Fátima Rodríguez Cuevas, Esteban V. Cardemil

Psychology

In mental healthcare, functional impairment is an essential element in diagnosing and monitoring the severity of mental disorders. However, current clinical practices do not account for how context and culture might shape conceptions of functional impairment, given the demonstrated influence of cultural context on mental health, particularly in Mexico. We interviewed 16 members of a rural community in Chiapas, Mexico to understand how they understood functioning and how functioning is impacted by distress. We analyzed the data using thematic analysis with a critical lens. With regards to conceptions of functioning, participants described that to function was to work (nuestra vida …

Be A Leader In Your Practice: What’S Your Style?, William Chase Dds, Maom

The Journal of the Michigan Dental Association

In this Leadership Development feature, the author draws from a wealth of leadership experience in Rotary to explore the importance of leadership in dentistry. Emphasizing the need for self-evaluation through emotional intelligence, the article delves into five key aspects: self-awareness, self-regulation, motivation, empathy, and social skills. The author introduces three leadership styles — Transformational Leadership, Situational Leadership, and Servant Leadership — highlighting their characteristics and benefits. Encouraging readers to adopt diverse leadership styles, the piece underlines the significance of effective leadership in dental practice, community engagement, and organized dentistry.

Assessing Stereotype Content And Accuracy Of The Poor: Interpersonal Warmth And Social Competence Dimensions, Shiza Shahid

Master's Theses

The present study assessed (a) the stereotype content of poor people among the poor and the non-poor by using implicit and explicit measures and (b) how these stereotypes map onto actual traits of the poor (i.e., stereotype accuracy). Experiment 1a assessed the stereotype of interpersonal warmth associated with the poor in the non-poor individuals using the Single Category Implicit Association Task (SC-IAT) and stereotype rating questionnaire. Participants also completed the interpersonal warmth inventory. Poor participants completed the SC-IAT, stereotypes ratings, and interpersonal warmth inventory to assess the stereotypes and stereotype accuracy (Experiment 1b). In Experiment 2a, I recruited non-poor participants …