Digital Commons Network^™

Comparison Of Mental Illness Comorbidity Pre-Pandemic Vs. Pandemic-Era And Associations With Clinical And Demographic Characteristics For Virginia Public Hospital Inpatient Discharges With A Substance Use Disorder, Marilyn Bartholmae, Tharidu Gunawardena

Department of Medicine Faculty Publications

The rise in mental illnesses after the COVID-19 pandemic is well documented. However, it is not known whether the rates of mental illness comorbidity increased. The objectives of this study were to compare mental illness comorbidity rates before and after the pandemic among inpatients with SUD and to test associations between mental illness comorbidity, physical illness, and demographics. We used a retrospective cross-sectional design in a sample of inpatient discharges (N = 233,017) at Virginia public hospitals from January 2018 to December 2022. We used Z tests to compare rates of mental illness comorbidity pre- and post-pandemic and Chi-square tests …

The Effects Of A Work-Strengths Affirmation Intervention On Death Anxiety, Begüm Orhan, Margaret M. Nauta

Faculty Publications – Psychology

Meaning Management Theory suggests that engaging with meaning-related resources helps individuals constructively regulate consciously experienced death anxiety. Consistent with that theory, we tested whether a single-session, online work-strengths affirmation intervention reduces college students’ (N = 201) death anxiety. Participants completed baseline measures of death anxiety, meaning in life, and self-esteem. One week later, they were randomly assigned to complete either a work-related strengths reflection exercise or a neutral writing task. We assessed outcomes immediately post-intervention and two weeks later. The intervention did not significantly reduce death anxiety in the full sample. Exploratory analyses showed small, immediate reductions among participants …

Carrots, Not Sticks: A Contingency Management Model For Rural Methamphetamine Recovery, Ella House

Scripps Senior Theses

Rates of methamphetamine use disorder (MUD) have risen sharply across the United States, with rural Appalachia experiencing the steepest mortality increases. Contingency management (CM) is among the most effective treatments for stimulant use, yet implementation is constrained by cost, logistics, and clinician shortages. Utilizing digital CM platforms and peer recovery support specialists, who are central to addiction support in rural regions, may reduce these barriers. This thesis proposes a 16-week, three-arm randomized controlled trial (N ≈ 300) comparing: (1) Digital Abstinence CM Only (remote saliva toxicology and monetary vouchers for stimulant-negative tests); (2) Digital + Peer-Goal CM (digital abstinence-based CM …

Art Therapy’S Effect On The Social And Emotional Skills Of Children With Autism: A Naturalized Parent Mediated Design, Abigail Adell

Scripps Senior Theses

This study examines the effect of art therapy on the social and emotional skills of children with autism. Using sensitive design and language, participants will take the CARS2 and ADOS-2 and then undergo an eight-week art therapy program. Families will attend weekly training sessions at the autism center their child already attends for eight consecutive weeks, with each session lasting approximately 90 minutes. Parents will implement the assigned art activity at home five times per week between training sessions, with each home session lasting fifteen to twenty minutes. The program uses a naturalized parent-mediated design so topics and projects can …

Lights, Camera, Aggression!: Exploring The Relationship Between The Horror Genre And Criminality, Taylor M. Wanke

Scripps Senior Theses

This proposed correlational study will examine the effect of exposure and involvement with the horror genre in media and the crime genre in media on one’s antisocial personality traits, criminal thinking, criminal behavior/aggression, and morality in the general population and those who are currently incarcerated. Data will be collected through a Qualtrics survey accessed online for the general sample and printed out for the incarcerated sample. Each participant will complete exposure checklists, involvement scales for each genre, and multiple measures to record their level of each dependent variable. Data will be analyzed using a correlational analysis, 1-sample t-tests, and a …

Assessing Diagnostic Overshadowing For Co-Occurring Autism Spectrum Disorder (Asd) And Eating Disorders (Ed), Eden Sweet

Scripps Senior Theses

Significant behavioral overlaps in feeding patterns are observed among individuals with eating disorders (EDs) and autism spectrum disorder (ASD). These behavioral similarities can blur diagnostic boundaries, contribute to diagnostic overshadowing, and consequently increase the risk of misdiagnosis and the implementation of ineffective treatment approaches. The proposed study addresses the risk of diagnostic overshadowing as it relates to the ambiguous distinction between autism-driven feeding behaviors and clinically significant eating disorders (ED) within the autistic population. Although the literature has acknowledged behavioral similarities between ASD and EDs, limited research has systematically examined how they impact diagnostic practices and influence the likelihood of …

Parental Psychological Distress And Perceived Child Externalizing Behaviors: Examining Mediators And Bidirectional Effects, Abigail J. Anderson, Christina M. Rodriguez, James M. Henson

Psychology Faculty Publications

Parental psychological distress is a commonly examined risk factor for the emergence of child problem behaviors, but the factors that contribute to that relationship—such as limited parental resources like greater social support and coping skills—have not been adequately explored, particularly with attention to potential bidirectional relations that incorporate child evocative effects. The current longitudinal study examined maternal and paternal psychological distress in relation to perceived child externalizing behaviors, considering parental resources as mediators within a bidirectional model. The sample included a racially and socioeconomically diverse group of 201 primiparous mothers and 151 fathers. Mothers and fathers reported their current psychological …

Establishing Hierarchical Classification Responding: Directly Trained And Emergent Responses, George H. Noell, Kristin A. Gansle, Hannah M. Sliman, Danielle M. De Lucia

Psychology Faculty Publications

Hierarchical classification responding (HCR) describes a collection of responses that require discrimination of logical relationships between stimuli based on their position in a categorical hierarchy. This study established HCR for a new hierarchy in young children through discrete trial instruction. Participants selected pictures corresponding to different hierarchical levels of categorization. We tested for the emergence of naming that matched the level of hierarchy presented, transformation of function, and class inclusion responding for the trained and novel stimuli. Correct responding to the target hierarchy was established and resulted in the emergence of class naming and transformation of function without direct instruction. …

Examining The Factor Structure And Subgroup Invariance Of The Deliberate Denial Of Disordered Eating Behaviors Scale, Lindsay Howard, Sage Hawn, Kayla D. Pitchford, Riley Mcgrath, Aubri Farniok, Arturo Sesma, Kristin E. Heron

Psychology Faculty Publications

The denial, concealment, or omission of disordered eating behaviors has received limited attention in the eating disorder literature, partly due to the lack of reliable and valid measures. This study re-examined the factor structure of the Denial of Disordered Eating Behaviors Scale (DDEBS-12) and tested measurement invariance across gender identity, racial identity, and levels of disordered eating in a non-clinical undergraduate sample (N = 3285). Confirmatory factor analyses did not support the original unidimensional structure. Instead, a seven-item model assessing denial of dietary restriction demonstrated the best fit and was renamed the DDEBS-restriction. The revised scale showed good internal consistency …

Factors Influencing Vaping Behaviors Based On Social Cognitive Theory: A Qualitative Study Among Mexican-American College Students, Bara S. Bataineh, Liza Talavera-Garza, Alexandra Loukas, David J. Badillo, Sherman Chow, Geronimo B. Cardenas, Erika Garza, Anna Wilkinson

Psychological Science Faculty Publications

Background: Vaping rates among Mexican-American college students are high, yet the contributing personal and environmental factors remain understudied. The current qualitative study applies Social Cognitive Theory to examine how personal factors (e.g., self-efficacy, beliefs, and outcome expectations) and environmental influences (e.g., social norms and social media) shape vaping behaviors in this vulnerable population. Methods: We conducted semi-structured interviews with 19 Mexican-American college students (ages 18–25 years), 68% of whom were female, and all were current vapers. Participants discussed the personal and social contexts of their vaping experiences, with questions exploring their beliefs and outcome expectations. Interviews were recorded, transcribed, and …

Examining Relationships Between Pre-Arrival Information, Perceived Preparedness, And Distressing Call Outcomes Among Firefighters, Victoria L. Steigerwald

Graduate Studies Theses and Dissertations 2026

Responding to distressing emergency calls increases firefighters’ risk for negative mental health outcomes, including posttraumatic stress disorder, warranting investigation into factors that can be targeted to reduce their risk for call-related distress. The present study examined whether the completeness of pre-arrival information about a distressing call reduced firefighters’ peri- and post-call distress via their perceived preparedness for the call and whether general self-efficacy moderated the relationship between pre-arrival information completeness and perceived preparedness. Data were analyzed from 173 active firefighters in the United States (89.0% male, mean age=37.98 years) who completed an online survey asking them to report on levels …

Sensory And Emotional Impacts On Modern Consumer Experiences, Winter E. Bland

Graduate Studies Theses and Dissertations 2026

This dissertation comprises two essays examining how environmental and psychological stimuli shape consumer experience, attitudes, and cognition. The first essay investigates the joint influence of scent temperature (warm versus cool) and scent arousal (stimulating versus relaxing) on experiential attitudes and cognitive performance in digitally mediated consumption environments. Across multiple lab experiments with biometric validation, findings reveal that these two scent dimensions interact to shape downstream outcomes. Warm, low-arousal scents (e.g., vanilla) enhance consumers' experiential evaluations of digital interactions but do not improve task performance, whereas cool, high-arousal scents (e.g., peppermint) boost cognitive efficiency and accuracy but do not elevate experiential …

Independent And Interacting Effects Of Co-Presence And Social Media 'Likes' On Online Disinhibition, Margaret M. Doheny

Graduate Studies Theses and Dissertations 2026

Social media platforms have fundamentally transformed interpersonal communication by creating environments in which behaviors are publicly reinforced through visible social feedback systems such as “likes.” Although prior research has linked online environments with increased disinhibition and negative behavior, existing literature has primarily focused on anonymity and invisibility as the primary mechanisms underlying these effects. However, the mechanistic role of physical and psychological co-presence in driving online disinhibition has received little empirical investigation. The central aim of the present study was to determine whether reduced social presence and the selective reinforcement of negative content contribute to online disinhibition and anticipatory reward-seeking …

Detecting Error In Ai-Generated Text: The Effects Of Authorship And Word Presentation Speed, Gabriela Flores Cruz

Graduate Studies Theses and Dissertations 2026

The increased us of artificial intelligent (AI) chatbots powered by Generative Pre-trained Transformers has raised concerns about users’ ability to detect errors of AI-generated text. This dissertation examined how readers identify inconsistencies in AI-generated expository passages using the inconsistency detection paradigm from comprehension monitoring research. Across two experiments, it investigated whether perceived authorship and word presentation speed influenced inconsistency detection. Experiment 1 used a 3 (author: human, AI, no author) × 2 (inconsistency type: internal, external) between-subjects design. Perceived authorship did not significantly affect hit rates, sensitivity, or response bias. Exploratory analyses indicated that reading comprehension and working memory predicted …

Gaining Voice, Creating Opportunity: An Exploration Of Non-Native English-Speaking Students’ Sources Of Self-Efficacy In U.S. College Public Speaking Classrooms, Desiree M M Flores-Molina

Graduate Studies Theses and Dissertations 2026

This qualitative dissertation explores the sources of public speaking self-efficacy among non-native English-speaking international students enrolled in U.S. college public speaking courses. The study applies Bandura's social cognitive theory to examine how students describe the experiences that shape their confidence and perceived ability to succeed, with attention to mastery experiences, vicarious experiences, verbal persuasion, and physiological and affective states. It also considers how classroom practices and instructor support contribute to or constrain students' confidence.

Data were collected through semi-structured student interviews, guided reflection artifacts connected to major speech assignments, and key-informant interviews with public speaking instructors. Thematic analysis was used …

Internalized Shame, Self-Focused Attention, And Post-Event Processing In Everyday Social Anxiety, Wooje Lee

Graduate Studies Theses and Dissertations 2026

The purpose of this study was to investigate how emotional processes, represented by internalized shame and daily shame (from the emotion-focused therapy model), and cognitive processes, represented by self-focused attention and post-event processing (from cognitive-behavioral models), operate on a daily basis to contribute to social anxiety. Data collected from a sample of 39 individuals with high social anxiety via an online survey and daily diaries was analyzed using multilevel path analysis. The results showed that, at the within-person level, daily shame experienced during an important social interaction influenced self-focused attention during that same interaction and subsequent post-event processing, which in …

Appraising The Uniform: Stress, Predisposition, And Trust In Police Among Latin American And U.S. Latino Populations, Maren J. Mainx

Graduate Studies Theses and Dissertations 2026

Public trust in police is central to regime legitimacy, yet reforms intended to build trust produce inconsistent results, and communities facing comparable conditions can respond differently to similar policing. This dissertation accounts for that variation by examining how stress shapes citizens’ responses to police visual cues. It proposes a framework in which citizens interpret these cues through their general trust in police—trust that weighs more heavily under stress. This framework is examined through a multi-method design spanning the Americas. Study 1 merges AmericasBarometer data with the Global Police Militarization Dataset across nineteen countries (2010–2023) to examine how stress and national …

The Role Of Alcohol Expectancies In The Relationship Between Social Anxiety And Protective Behavioral Strategies Among College Students, Jordan Ortman

Graduate Studies Theses and Dissertations 2026

College students with elevated social anxiety are at heightened risk for alcohol-related consequences despite not consistently reporting greater alcohol use. One potential explanation for this pattern is lower engagement in protective behavioral strategies (PBS). Social alcohol expectancies are relevant to PBS use because students with elevated social anxiety often expect alcohol to reduce social discomfort or facilitate social interaction, and these beliefs may correspond with lower use of strategies that constrain the pace or amount of drinking. The present study examined whether positive and negative social alcohol expectancies were intermediate variables in associations between social anxiety and three PBS domains: …

Cracking The Code Of Ai Autonomy: Examining The Role Of Challenge And Hindrance Appraisals And Ai Literacy In Task Satisfaction, Rujuta Parekar

Graduate Studies Theses and Dissertations 2026

AI is constantly evolving and being rapidly integrated into the workplace. Limited research has examined how this integration is affecting employee outcomes, and particularly the impacts of whether employees are expected or mandated to use AI for their work. The present study utilized the challenge-hindrance framework to examine the effect of autonomy in using AI on task satisfaction through challenge and hindrance appraisal among working adults. Since the ability to understand and use AI can influence how individuals perceive it, the moderating effect of AI literacy on the hypothesized research model is also examined. A multi-wave research design was used …

Perspectives Of Poetry: Peering Into Poetry And Aphasia, Kristian M. Perez

Graduate Studies Theses and Dissertations 2026

People with aphasia often experience significant barriers to communication, emotional expression, and participation in meaningful life activities following stroke or neurological injury. Although poetry and creative expression have been explored in broader therapeutic contexts, limited research has examined how people with aphasia perceive poetry. The purpose of this qualitative study was to explore the perspectives of people with aphasia regarding definitions of poetry, level of interest in poetry and the factors influencing said interest. Semi-structured interviews were conducted with adults with aphasia recruited through convenience sampling. Participants responded to questions before and after exposure to the poem Trust by Mark …

A Modular Virtual Reality Training Framework For Multi-Target Drone Defense, Susann Schleupner

Graduate Studies Theses and Dissertations 2026

Unmanned aerial systems (UAS), commonly referred to as drones, have become a rapidly growing challenge in modern military operations. In particular, the increasing use of small, agile, and low-cost systems—such as first-person-view (FPV) drones and coordinated multi-drone deployments—places high cognitive demands on operators, requiring rapid target detection, prioritization, and decision-making under time pressure.

Existing training approaches either rely on costly and logistically constrained live exercises or focus primarily on isolated piloting and shooting tasks, without sufficiently addressing these cognitive demands. At the same time, advances in commercial off-the-shelf (COTS) virtual reality (VR) hardware enable scalable, flexible, and repeatable training environments. …

Visual Cues Of Human-Likeness, Not Salience, Impact Trust-Related Human-Computer Interaction, Jordan Schotz

Graduate Studies Theses and Dissertations 2026

As interactions with digital agents become increasingly integrated into daily life, understanding how visual representations influence social decision-making is critical. Previous research in human-computer interaction has frequently confounded the psychological effects of an agent's perceived human-likeness with the underlying visual salience of the stimuli. To address these persistent gaps, the present study systematically isolated the effects of human-likeness and visual cue trustworthiness on trust behavior while controlling for objective image properties. The present study expanded on and normed the Virtual Avatar Facial Stimuli Set (VAFSS), a comprehensive database comprising hundreds of identity-matched photographs and computer-generated avatars varying across a spectrum …

Switching Things Up: Investigating The Costs Of Switching Between Tasks Of Varying Interdependence And Factors That Influence These Transitions, Taylor A. Wilhelmy

Graduate Studies Theses and Dissertations 2026

Though researchers have indicated that there is a high probability teams will transition between tasks of varying interdependence (Benishek & Lazzara, 2019; Mesmer-Magnus et al., 2016), there is a need to further examine this idea (Smith-Jentsch, 2015; Mesmer-Magnus et al., 2016) as few have actually studied it. Expanding upon Moon et al. (2004), this study examines the costs associated with transitioning between two tasks of varying levels of interdependence (i.e., pooled and team interdependence; Saavedra et al., 1993), how these costs vary depending on the order the tasks are engaged while examining how team cognition (i.e., transactive memory systems) and/or …

Careless Responding: Testing The Theory Of Vigilance, Rusty Wilson

Graduate Studies Theses and Dissertations 2026

Careless responding (CR) has been identified as a threat to the psychometric integrity of cognitive and non-cognitive tests, with much of the current research focusing on the identification and removal of carelessness from dataset. While this research has proved fruitful in improving data quality, there has been a recent push to move towards preventing carelessness as opposed to post-hoc removal, which harms statistical power. However, the most common prevention strategy to prevent carelessness (pre-survey warnings) has shown equivocal effects. Additionally, the literature lacks an agreed upon theory to explain why carelessness occurs. To address these gaps I introduce theory from …

Robust Linking Estimation In Item Response Theory Using Quantile Regression: Applications To The Graded Response And Generalized Partial Credit Models, Ibrahim Almansour

Graduate Studies Theses and Dissertations 2026

This dissertation investigates robust estimation of linking coefficients in Item Response Theory (IRT) using quantile regression and its extensions. Linking procedures are essential for placing item and ability parameters from different test forms onto a common scale, thereby ensuring comparability of examinee scores across administrations. Traditional approaches such as moment methods, characteristic curve methods, and mean-based regression procedures like Ordinary Least Squares (OLS) and Generalized Least Squares (GLS) perform adequately under ideal conditions but tend to lose accuracy when ability distributions deviate from normality or include outliers.

To address these limitations, this research proposes a quantile-based regression framework that estimates …

Applying Harm Reduction To Binge-Eating Disorder: Protective Behavioral Strategies Against Uncontrolled Eating, Emily Burr

Graduate Studies Theses and Dissertations 2026

Binge-eating disorder (BED) is a highly deleterious mental illness, with ramifications ranging from psychological impairment to premature mortality. Despite the awareness of intervention urgency, treatment strategies to manage BED have limited long-term efficacy. Therefore, it is of high necessity to illuminate other methods of reducing the potential effects of binge eating (BE), either by combatting severity or frequency of the behavior. Protective behavioral strategies (PBS), first identified in the substance use field, are methods by which an individual attenuates potential harm from a behavior without expectation of abstaining (i.e., a harm reduction approach). Given high likelihood of treatment relapse for …

Exploring A Potential Link Between Personality Traits, Sexual Assault Attitudes And The Propensity To Create Deepfake Pornography, Lorna Marns, Ross Hollett

Research outputs 2022 to 2026

Deepfake pornography represents a rapidly expanding form of image-based sexual abuse (IBSA), yet little is known about the psychological factors that predict individuals’ willingness to create such material. This study examined whether rape myth acceptance (RMA) and Dark Tetrad traits (Machiavellianism, narcissism, psychopathy, and sadism) predicted heterosexual men’s proclivity to create deepfake pornography. Using an online self-report survey of 213 heterosexual men recruited from an Australian university and the surrounding community, participants completed measures of RMA, dark personality traits, and hypothetical scenarios assessing the likelihood of creating deepfake pornography. Hierarchical regression models showed that RMA attitudes that minimise or excuse …

Systematic Review Of Ketamine Therapy For Treatment Resistant Depression, Amal Abdulkadir

Antioch University Dissertations & Theses

a systematic literature review the results of 29 published studies from 2020-2025 that met specified inclusion criteria. The review identified costs and benefits of traditional algorithms for treating this problem, as well as the trend in research to include the use of ketamine. Studies have demonstrated a potential association between the use of ketamine therapy and significant clinical improvement in depressive symptoms. However, the current efficacy of ketamine therapy compared to treatment as usual, side effects and contraindications have not been addressed. This dissertation is available in open access at AURA, https://aura.antioch.edu/, and OhioLINK ETD Center, https://etd.ohiolink.edu/

Preoperative Patient Sentiment Is Associated With Postoperative Outcomes In Adult Spinal Deformity Surgery, Ross J. Gore, David Mazur-Hart, Mohan K. Sunkara, Aaqib Ali, Qizar Ali, Christopher J. Lynch, Christopher Ames

Center for Secure and Intelligent Critical Systems (CSICS) Publications

Study Design: Prospective observational pilot study of adult spinal deformity surgery patients.

Objective: To determine whether preoperative patient sentiment, quantified using a 21-class valence scale extending the CARP paradigm implemented through an offline Large Language Model, predicts postoperative outcomes.

Summary of Background Data: Predicting adult spinal deformity surgery outcomes remains challenging with traditional clinical and radiographic parameters alone. Although patient psychological factors and expectations significantly influence postoperative satisfaction and quality of life, systematic approaches to capture these factors are underdeveloped. Offline Large Language Models offer scalable, privacy-preserving psychological risk stratification.

Materials and Methods: We prospectively enrolled 18 patients undergoing adult …

Examining The Physiological Stress-Reducing Effects Of Virtual Nature Exposure And Slow Breathing, Jesse Benefiel

Cal Poly Humboldt theses and projects

In a time of excess stress, it is essential to examine accessible stress-reduction methods. Research has demonstrated that virtual nature exposure and slow breathing can independently reduce stress, but the literature is lacking with regard to their combined effects. The present study aimed to replicate independent effects of breathing and nature on stress and to test for potential effects, including whether their combination would produce an interaction effect. Using a 2 Environment (Natural v. Control) by 2 Breathing (Slow v. Normal) between-subjects design, 63 participants completed a modified color-word Stroop task to induce stress and were then exposed to either …