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Development And Implementation Of Telemetry Devices To Identify And Characterize Sources Of Intraocular Pressure Variability In Rats, Christina M. Nicou

USF Tampa Graduate Theses and Dissertations

Eye health depends partially on intraocular pressure (IOP) as abnormal levels can lead to ocular tissue damage. Glaucoma is a neurodegenerative disease that affects nearly 80 million people worldwide [1]. It is associated with elevated IOP, which can lead to irreversible blindness. Relatively little is known about IOP dynamics and the physiological factors that affect it as IOP is typically monitored using tonometry. Tonometry is a common tool used by clinicians and researchers to measure IOP noninvasively. It provides a good estimate of IOP mean but not variance because data collection takes time. Readings can also be influenced by subject …

Relationship Between Individual Characteristics And Received Social Support Among People With Serious Mental Illness, Samantha Dicorte

USF Tampa Graduate Theses and Dissertations

Past research on social support has mainly focused on perceived social support. Relatively less research has been done on received social support and how it can promote positive behavior outcomes. This study examines the importance of received social support, including background on social support, social support outcomes, and a theoretical foundation overview of the social stress model. In addition to a literature review, this study investigates the association between individual characteristics (i.e., diagnosis and substance abuse including alcohol, race/ethnicity, gender, age, and marital status) and different types of received social support (i.e., daily, mental health, and adherence support). Simple linear …

The Use Of Acceptance And Commitment Training To Improve Teacher Interactions With Students, Taylor Raaymakers

USF Tampa Graduate Theses and Dissertations

Teachers in classrooms with students who engage in challenging behavior often experience high levels of stress and may leave the profession. Few research studies have evaluated interventions to decrease teacher stress. Therefore, this study assessed the use of Acceptance and Commitment Training (ACTr) with teachers for decreasing stress and increasing positive interactions with students. The ACTr intervention consisted of both a one-time training and subsequent activities throughout the intervention phase of the study. Two self-report measures were administered during baseline and post follow-up observations. These self-report measures provided information on the levels of psychological distress the teachers were experiencing and …

Multidimensional Well-Being Across Time Scales In Caregivers And Non-Caregivers, Victoria R. Marino

USF Tampa Graduate Theses and Dissertations

Contemporary research on informal caregiving recognizes that, though stressful, providing care for a disabled family member or friend can bring psychological benefits, such as increased meaning or purpose in life, growing closer to the care recipient, and learning new skills. Scales of eudaimonic well-being (EWB – e.g., meaning in life, personal growth, and positive relations with others) developed in positive psychology literature offer an innovative solution to incorporating caregiving benefits into between-groups comparisons of caregiver and non-caregiver well-being, which have typically focused on cross-sectional assessment of hedonic well-being (HWB – i.e., negative/positive affect and life satisfaction). Moreover, using daily using …

A Longitudinal Examination Of Coping And Subjective Well-Being Among High School Students In Accelerated Curricula, Hannah L. Gilfix

USF Tampa Graduate Theses and Dissertations

High school students in accelerated curriculum, which include Advanced Placement (AP) and International Baccalaureate (IB) programs, face greater amounts of academic stress than those in the general education curriculum (Suldo & Shaunessey, 2013). It is crucial to understand how these students cope with their academic demands and the impact that their use of various coping factors has on their overall subjective well-being. This study utilized a longitudinal non-experimental design to a) examine the stability of coping factors, b) examine the relationship between individual coping factors and subjective well-being, c) investigate the impact of socioeconomic status on the relationship of coping …

Changes In Educator Attitudes Related To Trauma-Informed Care, Amira Mattison Boylston

USF Tampa Graduate Theses and Dissertations

Historically, teachers have been primarily focused on fostering the academic success and progress of their students. Over the years, the role of a teacher has evolved to also encompass meeting the behavioral and social-emotional needs of their students as well. Students with difficulties in these areas are often at-risk for struggling academically and may make limited progress without adequate social-emotional or behavioral support. Unfortunately, many teacher training programs have not adequately prepared their educators to fulfill this need. This is especially concerning because of the growing number of youths who have adverse childhood experiences, which is exposure to traumatic events …

Resilience And Burnout In Second- And Third-Year Medical Students, Chad E. Whistle

USF Tampa Graduate Theses and Dissertations

Between their second- and third-years of medical school, students must pass the United States Medical Licensing (USMLE) Step 1 exam. This high-stakes exam is critical to the overall success of medical students; the score has been a determining factor for the student’s residency training and specialty choice. Because medical students are faced with the burden of studying and concept mastery of content for USMLE Step 1, concurrent to ongoing coursework in the medical school curriculum, students may develop symptoms of burnout and be ill-prepared to remain resilient. This study investigated the extent of the relationship between burnout and resilience in …

Villains Or Vermin? The Differential Effects Of Discrimination And Dehumanization On Immigrant Cardiovascular Responses, Mona El-Hout

USF Tampa Graduate Theses and Dissertations

Immigration has been pushed to the forefront of a national political debate, and immigrants are commonly portrayed as villains and vermin looking to invade and infest Western nations. These negative portrayals of immigrants may have negative implications for immigrant health outcomes. Among other negative health outcomes, studies have found that immigrant cardiovascular disease rates increase with time spent in the U.S. This phenomenon of decreasing immigrant health with extended U.S. residency has been labeled “the immigrant health paradox”, and discrimination has often been posited as a possible explanatory factor. In addition to discrimination, immigrants are often the targets of dehumanization, …

Threat-Induced Alterations In Cognition And Associations With Disinhibited Behavior, Julia B. Mcdonald

USF Tampa Graduate Theses and Dissertations

When a threat is detected, brain networks associated with threat processing are activated while other processes are deprioritized. While this resource allocation is adaptive, it makes it especially difficult to effortfully direct thoughts, emotions, and behaviors (use cognitive control) during situations of high stress. Further, this threat response is most efficient in response to short-term or predictable stressors (“threats”) but loses its efficiency for ambiguous or unpredictable threats. Despite research that suggests that threat induces psychological states associated with breakdown in cognitive control processes, no study has directly examined how predictability of threat impacts neurocognitive indicators of cognitive control processes. …

Evaluating Effects Of Deposit Contracting On Oral Contraceptive Adherence, Sandy Au Yeung

USF Tampa Graduate Theses and Dissertations

There is a high prevalence of nonuse and imperfect use of oral contraceptives (OCs) that can result in multiple consequences, one of which is unintended pregnancy. Deposit contracting may be promising for increasing OC adherence, however, there is little research testing deposit contracting on oral contraceptive adherence. In addition, studies have concluded that young women with elevated stress symptoms are at risk of contraceptive nonuse. Purposes of this thesis were to evaluate effects of deposit contracting on OC use for women, and the relation of stress to timely pill consumption. In addition, reliability was measured between the different measurements used …

Manipulating Relative Lmx: Effects On Performance, Conflict, And Strain, Keaton A. Fletcher

USF Tampa Graduate Theses and Dissertations

Fundamental to the conceptualization of leader-membership exchange (LMX), particularly within the context of teams, is that leaders do not necessarily treat each follower equally. Studies that have examined LMX within the context of the team often fail to capture these complexities, or rely exclusively upon self-report, or survey-based data to make inferences. Therefore, it is the purpose of this study to examine the effects of experimentally manipulated relative LMX within teams on individual conflict processes, attitudes, and psychological distress, as well as team-level performance. This study examined conflict processes and outcomes within 113 virtual, project teams engaged in a decision-making …

Prevention Of Post Intensive Care Syndrome-Family With Sensation Awareness Focused Training Intervention: A Randomized Controlled Trial Pilot Study, Paula L. Cairns

USF Tampa Graduate Theses and Dissertations

Post Intensive Care Syndrome-Family (PICS-F) refers to acute and chronic psychological effects of critical illness on family members of patients in intensive care units (ICU). Evidence about the increase and persistence of PICS-F warrants the need for prevention interventions. This study evaluated the feasibility of providing Sensation Awareness Focused Training (SĀF-T) during the ICU stay for spouses of mechanically ventilated patients. Methods: A randomized controlled trial of SĀF-T versus a control group was conducted (n=10) to assess safety, acceptability, feasibility, and effect size of the intervention on PICS-F symptoms. Symptoms assessed as outcome measures included stress, anxiety, depression, posttraumatic stress …

Experience Of The Neophyte Science Teachers: Through Their Eyes, David Thornton

USF Tampa Graduate Theses and Dissertations

A variety of lenses were used to examine the world of the novice science teacher. A degree of agency was provided by looking through the eyes of the beginning teacher. Previous studies focused on researcher or program’s orientation, the successes of various educator preparation programs, or were limited in scope to elementary teachers of science. This study was conducted to better understand and appreciate the high school novice science teacher’s view of science, teaching, and teaching science in the today’s contextual setting. Experiences encountered during the initial year of teaching high school science and as perceived by teachers without previous …

Development And Validation Of The Distress Tolerance Questionnaire (Dtq), Elizabeth C. Rojas

USF Tampa Graduate Theses and Dissertations

Distress tolerance (DT) is the perceived ability to withstand psychological stress, and has been studied for its relationship to psychopathology, personality features, mood states, and behaviors. Previous work suggests that the two existing modalities of DT measurement (behavioral and self-report) are tapping conceptually and empirically different constructs. The current developed a novel, self-report measure of DT that conceptually mapped onto behavioral DT in two samples: community participants (N = 982) and undergraduates (N = 282). Two separate factors emerged, non-goal oriented distress intolerance (DI), and goal-oriented distress tolerance (DT). Fit indices were acceptable in the community sample, but poor in …

Effects Of An Early Life Immune Challenge On Body Growth, Personality, Mating Behaviors, And Brain Development Of Zebra Finches (Taeniopygia Guttata), Ahmet Kerim Uysal

USF Tampa Graduate Theses and Dissertations

The developmental stress hypothesis predicts that an aversive condition, such as decreased food intake, predation, and social isolation, in the early developmental stage could have long term effects on behaviors and brain development of an animal. In nature, bird nestlings are susceptible to various factors, such as malnutrition, infections, and parasites. Effects of early life stress on adulthood have been extensively studied with some stressors including malnutrition. However, immune challenges as an early life stressor and their long-term programming effects on adult behaviors are yet to be studied in detail. The goal of the current study was to investigate changes …

Epigenetic Response To Challenging Environmental Conditions, Marta Robertson

USF Tampa Graduate Theses and Dissertations

The discovery of epigenetic mechanisms has ignited speculation into their role in ecological and evolutionary processes. In particular, the contribution of epigenetic variation to adaptation or phenotypic plasticity that is distinct from genetic variation would be an important addition to existing evolutionary mechanisms. Although the research of epigenetic mechanisms from an ecological and evolutionary (or eco-evolutionary) perspective has been growing, it is still unclear how epigenetic variation might function in natural populations and settings and to what extent it might serve to mediate population response to changing environmental conditions over time. Over the course of my dissertation, I explored the …

Social Supports, Stress And Birth Outcomes Among Latina Mothers In Pinellas County, Florida, Maridelys Detres

USF Tampa Graduate Theses and Dissertations

Social supports are linked in public health research to improved birth outcomes. This study explored the relationship of social supports, stress and birth outcomes among pregnant Latinas in Pinellas County, Florida. A sample of 411 Healthy Start women at risk of poor birth outcomes participated in this study (99 Latinas, 142 Black, and 158 White). Study methods included ANOVA, Principal Component Analysis, multivariable regression, logistic regression, and structural equation modeling to identify significant associations between social support scores, stress scores, demographics and health risk factors with infant birth weight, preterm and small for gestational age by ethnic group. Study findings …

Reactivity And Recovery Among Oif/Oef/Ond Combat Veterans: Do Those With Subthreshold Ptsd Differ From Veterans With And Without Ptsd?, Paula Castro-Chapman

USF Tampa Graduate Theses and Dissertations

This study expanded the current literature by assessing PTSD in relation to reactivity and recovery from negative emotional arousal among OEF/OIF/OND Veterans. Cardiac impedance was employed during a speech task and a trauma imagery procedure. Those in the PTSD-S group displayed lower SBP and higher TPR reactivity relative to the PTSD- and PTSD+ groups; lower CO reactivity relative to the PTSD+ group; and more CO recovery than those in the PTSD+ group to the trauma task. For speech task, Veterans in the PTSD-S group exhibited lower HR reactivity for both speech preparation and delivery than those in the PTSD- group. …

Polymer Characteristics Of Polyelectrolyte Polypeptides, Jorge Monreal

USF Tampa Graduate Theses and Dissertations

Polypeptides are polymerized chains of amino acids linked covalently through peptide bonds. Polyelectrolyte polypeptides are polypeptides with electrolyte repeating groups. Several amino acids contain ionizable side chains which result in charge distributions when dissolved in aqueous solutions. This dissertation is motivated by a desire to gain knowledge of polyelectrolyte polypeptides as recent advances in chemical synthesis of polypeptides have made possible the fabrication of designed polypeptides that do not naturally occur in nature. Potential applications of newly designed polypeptides span the range from medical to clothing and energy even to robotics.

In this dissertation we compare the characteristic behavior of …

Ohm … Pardon The Interruption! An Exploration Of Mindfulness As A Buffer Against The Effects Of Intrusions, Keaton Allen Fletcher

USF Tampa Graduate Theses and Dissertations

Previous research has provided a helpful, albeit narrow, understanding of task interruptions as related to outcomes such as wellness and performance (e.g., Eyrolle & Cellier, 2000). Building on this foundation by viewing interruptions through the broader theoretical context of the theory of mental workload, this study sought to explain the cognitive processes underlying the negative performance effects often associated with interruptions and to apply an intervention aimed at mitigating these effects. Specifically, mindfulness has emerged as a promising method for reducing the cognitive burden of interruptions. This study examined the effects of intrusions (a type of interruption) on psychological strain …

An Animal Model Of Flashbulb Memory: Insights Into The Time-Dependent Mechanisms Of Memory Enhancement, Laura Ashley Bullard

USF Tampa Graduate Theses and Dissertations

The vivid memory of an emotional event, as well as memory for incidental details associated with the arousing event, has been referred to collectively as a “flashbulb memory”. An important aspect of flashbulb memory in people is that an emotional event enhances memory of contextual details, such as the weather, or clothes one was wearing at the time of the event. Therefore, an emotional event not only produces a detailed memory of the event, itself, but also enhances memory for contextual details that would otherwise not be remembered. The first goal of this work is to describe the development of …

Stress And Coping In High School Students In Accelerated Academic Curricula: Developmental Trends And Relationships With Student Success, Brittany V. Hearon

USF Tampa Graduate Theses and Dissertations

High school students in accelerated academic curricula including Advanced Placement (AP) courses and International Baccalaureate (IB) programs are faced with unique challenges associated with their rigorous academic demands, in addition to normative adolescent stressors. Because of the increasing popularity of AP and IB among high-achieving youth and benefits realized by students who successfully manage such curricula, there remains a need to better understand the experiences of stress and coping among this population. The current study used longitudinal and cross-sectional comparisons to (a) investigate the degree to which students in accelerated curricula experience environmental stressors and employ coping strategies to manage …

Investigation Of Post-Translational Modifications In Staphylococcus Aureus, Christina Nadia Krute

USF Tampa Graduate Theses and Dissertations

The work presented herein details post-translational modifications (PTMs) in Staphylococcus aureus that are involved in mediating the stress response and normal cellular processes. The first PTM that was investigated is regulated intramembrane proteolysis (RIP) for the activation of the ECF sigma factor σS. We achieved this by analyzing the role of the site-1 protease, which we termed “putative regulator of sigmaS” (PrsS), as it is predicted to be the first enzyme in the RIP cascade, leading to the activation of σS. It was determined that the putative site-1 protease, prsS, mimics transcriptional profiles of sigS; with expression low in all …

Can Anyone With Low Income Be Food Secure?: Mitigating Food Insecurity Among Low Income Households With Children In The Tampa Bay Area, Edgar Allan Amador

USF Tampa Graduate Theses and Dissertations

In the US over the last few years, approximately 14.5% of households experience food insecurity at some point throughout the year. While studies on food insecurity in the US have determined that household income and specifically income available to spend on food is of critical importance to food security, it is still unclear why some households with low income are able to maintain food security while others experience food insecurity in a pattern characterized as not constant but recurrent. This dissertation compares households with children at different levels of food security and insecurity using the USDA Core Food Security Module …

Long-Term Mindfulness Meditation: Anxiety, Depression, Stress And Pain, Is There A Connection For Public Health?, Sara Spowart

USF Tampa Graduate Theses and Dissertations

Long-term mindfulness meditation for anxiety, depression, pain and stress has not been adequately investigated in academic literature. The majority of literature in relation to mindfulness meditation and these ailments concerns Kabat-Zinn's Mindfulness-Based Stress Reduction (MBSR) program. This is a short-term 6-8 week program that requires a licensed professional, is limited in availability, high cost, and combines other elements aside from mindfulness meditation, such as yoga, martial arts, group discussion, poetry and other teaching techniques meant to increase mindfulness concentration. Furthermore, efficacy studies, which have assessed the long-term impact of MBSR are inconclusive. Although these studies on long-term practice demonstrate a …

The Baby Blues: Mothers' Experiences After Adoption, Brigette Barno Schupay

USF Tampa Graduate Theses and Dissertations

ABSTRACT

It is not uncommon for new mothers to experience depression. However, depression after the arrival of a child is not limited to biological mothers. The term Post-Adoption Depression Syndrome (PADS) was created to capture the unique type of depression that may occur after adopting a child. The nature and prevalence of depression after adoption is still largely unknown since there is little published research exploring the experiences of mothers in the first year after adopting a child. The characteristics of this disorder are reportedly comparable to postpartum depression in a biological mother. A review of postpartum literature reveals risk …

Ocbs And Strain: The Moderating Role Of Control, Kevin Loo

USF Tampa Graduate Theses and Dissertations

Organizational citizenship behaviors (OCBs) are typically assumed to be beneficial to employees and organizations. However, research has recently questioned this assumption. This study seeks to identify when OCBs are related to various strains and are detrimental to the employee or the organization. Specifically, using a stressor-strain model, it is hypothesized that in general, OCBs will be related to work effort; however, when employees feel pressured to perform OCBs, and thereby feel less control, OCBs will be more related to various strains. The hypotheses were partially supported: under all conditions, OCBs were related to effort, but under conditions of feeling forced, …

The Effects Of Food Insecurity On Mental Wellbeing In Monteverde Costa Rica, Robert Eugene Cowherd

USF Tampa Graduate Theses and Dissertations

The rapid expansion of ecotourism in the Monteverde zone of Costa Rica has increased the incidence in food insecurity in the area. Changes in food preferences and availability have led to a more homogenized diet that is increasingly delocalized and reliant on processed foods. Additionally, there has been a rapid economic shift away from agricultural and dairy farming to an economy more reliant on tourism. This NSF supported study builds upon data from a longitudinal investigation (#BNS 0753017) examining the nutritional effects of this rapid economic transition. Using a mixed methods approach, a culturally appropriate scale of stress was developed …

Wetland And Lake Destruction, Development And Mental/Emotional Distress Among Residents Of Tampa Bay, Florida, Gina Larsen

USF Tampa Graduate Theses and Dissertations

The purpose of this research project is to understand how local environmental destruction in Tampa Bay, Florida, including changes in water resources and development activities, affects local Tampa Bay residents mentally and emotionally. The study also examines residents' personal connections with their landscape and documents the degree of stress that may be caused by experiencing environmental destruction through the use of interviews, freelists, and two psychometric stress scales (Hopkins Symptom Checklist-10 and the Environmental Distress Scale). The topic of emotional distress and environmental change has rarely been studied in social science research, particularly in the United States and with regards …

Evaluating Lethal And Sub-Lethal Effects Of Catch-And-Release Angling In Florida's Central Gulf Coast Recreational Atlantic Tarpon (Megalops Atlanticus) Fishery, Kathryn Yvonne Guindon

USF Tampa Graduate Theses and Dissertations

Atlantic tarpon are sought after because of their fighting ability on various tackle and support a popular, lucrative and predominantly catch-and-release recreational fishery in Florida. They are not commercially harvested or consumed by the general public, therefore assessing effects of catch-and-release angling on tarpon survival is critical to a sustainable fishery. Tarpon caught on artificial breakaway jig and traditional live bait fishing charters in Boca Grande Pass (n=42) and trips from the recreational fishery of Tampa Bay (n=40) were tagged with ultrasonic transmitters and tracked up to 6 hours immediately following release to estimate post-release mortality. Of the 82 tagged …