Cognition and Perception Commons^™

The Relationship Between Depression And Cognitive Proficiency Index Across Biological Sex, Angela N. Ferdinardo

Dissertations

Depression is a widely studied mood disorder, and understanding its effect on cognitive functioning has become an important area of research. While research has examined relationships among depression, working memory, and cognitive deficits, limited research has explored depressive symptoms and cognitive proficiency across biological sex. Depression manifests similarly in men and women, though men are more likely to experience irritability, impulsivity, and anger, while women tend to experience sadness, stress, and sleep disturbances (Johns Hopkins Medicine, 2023). Women are also more likely to seek treatment and cope differently than men. This study examined the relationship between depression and cognitive proficiency …

Long-Covid And Cognition, Mychael Bruce

Dissertations

COVID-19 is an evolving virus that can harm the body’s respiratory and cardiovascular systems. Directly related to COVID-19 are individuals who do not recover from their initial infection, making them long haulers. Long-COVID is transitioning from a range of isolated phenomena to higher prevalence rates in patients who contracted COVID-19. Many individuals report issues with cognitive function, referred to as ‘brain fog’, that affect memory, attention, and even language skills. This literature review addresses the available research on Long-COVID and how persistent infection correlates with cognitive difficulties. It aims to explain the neurobiology of Long-COVID and how Long-COVID interacts within …

From Stranger To Self: The Role Of Familiarity In Modulating The N170 And N250 Erp Components, Tabish Gul

Dissertations

This study investigated how varying levels of face familiarity modulate the N170 and N250 event-related potential (ERP) components, two neural markers of face perception and recognition. While the N250 is widely considered familiarity-sensitive, the N170 has traditionally been linked to the structural encoding stage of face perception. However, recent research suggests that face familiarity may also influence N170 amplitude and latency. While most previous studies have compared up to three familiarity levels, the present study examined five levels of familiarity: own face, friend’s face, famous face, experimentally familiar face, and unfamiliar face. Twenty-six participants viewed face images while completing a …

Unleashing Excellence: Strengthening It Leaders Through Executive Coaching, Tonya S. Rivers

Dissertations

This paper explores the impact of executive coaching on Information Technology (IT) leaders. Many organizations across different industries lack strong leadership, as exposed by COVID-19. Companies aim to keep exceptional leaders and establish upbeat workplaces to achieve success. Although previous research has examined leadership effectiveness, it is still unclear how best to manage employees' perceptions of effective leadership. The goal of this research is to provide new insights into what can improve perceptions of leadership effectiveness. I explored the role executive leadership coaching has on managers working in the Information Technology (IT) field. Current literature often mentions the need for …

Reclaiming Healing Spaces: A Phenomenological Study On The Transformative Power Of Outdoor Therapy From The Lived Experiences Of Black Clinicians Working With Black Clients, Lynn Murphy

Dissertations

This phenomenological study involved assessing the experiences of Black therapists who engaged Black clients in outdoor therapeutic contexts. The study was founded on the existing literature that shows the quality of the therapeutic relationship is pivotal for client retention and the Western standards that have historically favored treatment within indoor environments. To contextualize this research, a comprehensive literature review was commenced, covering topics such as the decolonization of therapy, the historical and present-day relationship between Blacks and the outdoors in the United States, sedentary lifestyles, the psychological benefits of time spent in nature, various types of outdoor therapy, and the …

Factors Impacting Treatment Decisions In Caregivers Of Autistic Children, Tiffany Harris

Dissertations

Caregivers of autistic children are not only tasked with deciding upon various treatment options for their children’s symptoms but must also navigate the initial crisis that is experienced after receiving a diagnosis of ASD for their children (Blancher, 1984; Ellis, 1989). Leventhal’s Common Sense Model of Self-Regulation (the CSM; Leventhal et al., 1980) is a theoretical framework developed to understand the self-regulatory processes involved in adapting to and managing health threats and posits that cognitive and emotional illness perceptions influence illness outcomes through coping behaviors. This is the first study to examine all major components of the CSM (i.e., cognitive …

The Effects Of Ambient Light Intensity On Affordance Perception, Tyler Overstreet

Dissertations

Humans can reliably perceive whether a slanted ground surface can be stood on or not. In the present study we investigated how differences in ambient lighting conditions affected the perception of stand-on-ability. The study manipulated lighting conditions (photopic, mesopic, scotopic) under which participants made affordance judgements about the stand -on-ability of a presented ramp in a virtual reality environment. We hypothesized that less visual information would be available in the scotopic condition, which would result in changes to affordance boundaries and movement complexity, when measured from head sway and center of pressure. Results indicated that participants’ affordance judgements were more …

U.S. Military Veterans Transition To Two Midwest Universities: Post-Traumatic Stress Disorder, Moral Injury, And Academic Outcomes, Malychanh T. Bartlett

Dissertations

Abstract

Objective: To examine the association between posttraumatic stress disorder (PTSD) and moral injury (MI) and the extrinsic factors of the degree of negative patterns of healthy behaviors and negative experiences in an academic setting, the moderating effects of social support on PTSD and MI symptomatology, and the perception of academic success and positive perception of academic experience. Additionally, to examine the mediating effect of intrinsic factors (perceived academic experience) on academic outcomes objectively and subjectively.

Background: Student veterans as non-traditional students face challenges transitioning to the academic environment. Some have underlying mental and psychological complications of PTSD and MI, …

​​The Effects Of Viewpoint, Motion, And Affordance Priming On Perceptual Learning Of Feelies​, Catherine Dowell

Dissertations

According to Gibson and Gibson (1955) perceptual learning is a process of developing the skill to differentiate previously undifferentiated but available information. The initial investigations focused on object identification, lacking a behaviorally relevant functional task. In the current study participants learned to differentiate between novel objects (feelies). To test the role of visual exploration objects were viewed from either a side or a top view and were displayed as either static pictures or rotating about a vertical axis. In Experiment 1 a simple object discrimination task was used. Perfect accuracy was achieved sooner in static conditions compared to motion conditions …

Using Imagery Practice To Improve Airline Pilot Situational Awareness, Brian Christopher Sajdak

Dissertations

Pilot error remains the primary cause of airline airplane accidents (Federal Aviation Administration, n.d.). Airline pilots have relied on Crew Resource Management and Threat Error Management to reduce or eliminate errors (Helmreich & Foushee, 2019). Unfortunately, the worldwide accident rate continues to increase (International Air Transport Association, 2021), demonstrating the need for further research into improving aviation safety. Current regulations do not require imagery training for airline pilots to improve situational awareness (Federal Aviation Administration, 2017a). Athletes and other professionals, such as musicians and medical professionals, use imagery to improve performance (Munzert et al., 2009). Imagery practice may improve the …

Felicidad Aplataná: How Dominican Migrants Living In The Nordic Countries Make Sense Of Their Happiness, Ivanna Lajara

Dissertations

As globalization evolves and the number of migrants and cross-cultural interactions among world citizens increases, understanding various aspects of immigrants’ experiences, including their happiness and subjective well-being will become fundamental to organizations, governments, and societies. However, there are substantial cross-cultural differences in how people understand their happiness, make sense of experiences that influence happiness, and how large-scale social trends, such as globalization, relate to the individual migration perspectives (Uchida and Ogihara, 2012). Research affirms culture as a key factor influencing happiness (Ye et al., 2015) and living in a foreign country may not only impact one’s perspective on life, but …

Hiv And Early Life Stress On Neuroimaging And Risky Behavior, Paola Garcia Egan

Dissertations

This study examined the interactive effects of early life stress (ELS) and HIV on brain morphometry, diffusion-basis-spectrum-imaging (DBSI), risky decision-making, and sex-risk behavior. 122 people with HIV (PWH) and 113 people without HIV (PWoH), free of major psychiatric illness and neurological confounds, were stratified into high (≥ 3 events) vs. low (< 3 events) ELS [PWoH/low ELS (n = 57), PWoH/high ELS (n =56), PWH/low ELS (n = 43), PWH/high ELS (n = 79)] and underwent structural magnetic resonance imaging, DBSI, neuropsychological, and risky-behavior assessment; all PWH were virologically controlled. Compared to PWoH, PWH had smaller orbitofrontal cortex (OFC), parietal lobes, insula, caudate and anterior cingulate. No ELS effects were detected in volumetric measures. Significant interactions were found between HIV serostatus and ELS on the OFC and on cellularity of the inferior fronto-occipital fasciculus after multiple comparisons adjustment. Specifically, PWH/high ELS exhibited significantly smaller OFC and PWoH/high ELS show significantly larger OFC than the other groups. PWoH/high ELS exhibited higher DBSI cellularity (neuroinflammation proxy) of the inferior-occipital-fasciculus compared to PWoH/high ELS. Regardless of HIV status, executive function moderated the relationship between the OFC and sex-risk behavior such that individuals within the sample who performed above average on a measure of executive function and had a larger OFC reported fewer sex partners in past six months than individuals with smaller volumes. No interaction was found between HIV serostatus and ELS on risky behavior measures. Clustering analyses defined ELS subgroups in PWH that were determined by demographic characteristics, duration of infection, recent CD4+ T-cell count, nadir CD4+ T-cell count and high/low ELS.Even in PWH that are virologically controlled, without major current psychiatric comorbidities, there is evidence of a synergistic impact of ELS and HIV on OFC volumes. Higher volumes in the OFC were detrimental when associated with lower executive function scores or advantageous when associated with higher executive function. Findings suggest that ELS is associated with different brain signatures among PWoH and virally suppressed PWH. However, ELS was not directly associated with risky behaviors, and subgroups in PWH were characterized by demographic variables, past substance use and HIV clinical variables.

Lifetime Racism And John Henryism On Cognition And Cardiovascular Health In Black Men, Roy Mitchell

Dissertations

Lifetime racism is a type of chronic stress that is often accompanied by depression. Racism is the experience of many Black men because of several psychosocial stressors such as reduced resources and institutional barriers, to name a few. Active coping is typically utilized by Black men as a consistent means to reduce the negative outcomes linked to racism, however, this up-tempo coping style can contribute to poor cardiovascular health and cognitive impairment over time. The present study aimed to provide data to support the effects of lifetime racism and active coping on cardiovascular health and cognition. There were three hypotheses …

The Impact Of Juvenile Offender Race On Public Perception Of Crime Seriousness, Megan Whitaker

Dissertations

Public perception of crime is an important focus of research, especially when considering juvenile offenders. However, there is very limited research in this area. This study looked at how the public perceives crime seriousness and how race of the juvenile offender impacts the overall seriousness rating. An online survey that included 15 crime scenarios was completed by 176 participants. It was hypothesized that a crime would be rated as more severe when the juvenile offender is African American as compared to a Caucasian juvenile offender. Results found that participants overall rated the seriousness of offenses as significantly higher for Caucasian …

Does Optic Flow Provide Information About Actions?, Hannah Masoner

Dissertations

Optic flow, the pattern of light generated in the visual field by motion of objects and the observer’s body, serves as information that underwrites perception of events, actions and affordances. This visual pattern informs the observer about their own actions in relation to their surroundings, as well as those of others. This study explored the limits of action detection for others as well as the role of optic flow. First-person videos were created using camera recordings of the actor’s perspective as they performed various movements (jumping jacks, jumping, squatting, sitting, etc.). In three experiments participants attempted to detect the action …

Does Optic Flow Provide Information About Actions?, Hannah Masoner

Dissertations

Optic flow, the pattern of light generated in the visual field by motion of objects and the observer’s body, serves as information that underwrites perception of events, actions and affordances. This visual pattern informs the observer about their own actions in relation to their surroundings, as well as those of others. This study explored the limits of action detection for others as well as the role of optic flow. First-person videos were created using camera recordings of the actor’s perspective as they performed various movements (jumping jacks, jumping, squatting, sitting, etc.). In three experiments participants attempted to detect the action …

The Understanding Of Digital And Multimedia Evidence (Dme) By Attorneys And Digital Forensic Examiners (Dfe) Within The United States Criminal Justice System, Joseph Levi White

Dissertations

One goal of this research was to determine potential themes that may influence the understanding of Digital and Multimedia Evidence (DME) by attorneys and Digital Forensic Examiners (DFE) within the United States Criminal Justice System. Qualitative semi-structured interviews were conducted to gather information from experienced criminal attorneys and DFEs regarding potential influences on their understanding of DME. The results of these interviews were transcribed, and the data coded to allow for qualitative analysis. Five themes were developed from this data and are thought to play a role in understanding of DME by attorneys and DFEs: motivation for involvement in the …

How Well Do You Know Your Reach?, Tyler Surber

Dissertations

How does the relationship between an actor’s body proportions (eye-, shoulder-, and arm length) and environmental properties (object distance) affect the perception of whether an object is within reach? Experiment 1 demonstrated that participants are more accurate at judging their own eye height than shoulder height. Experiment 2 revealed that participants can accurately perceive the angular direction to a target object’s location. Interestingly, their pointing errors were significantly smaller when measured from the shoulder as a reference point than from the eye. In Experiment 3 we verified this finding using a functionally meaningful affordance task of reaching to a target …

Phenomenological Study On The Lived Experience Of Black Women In Positions Of Leadership In California State Government, Tonia Burgess

Dissertations

Purpose: The purpose of this phenomenological study was to explore the lived experiences of Black women in their roles as leaders in the California state government with respect to support received and barriers encountered.

Methodology: The phenomenological qualitative study involved exploring the lived experiences of 12 Black women in positions of leadership in northern California state government with regard to the supports they received and the barriers they encountered during their careers in California state government. Patton (2015) asserted that phenomenology's philosophical interpretation occurs when individuals only know what they experience. Additionally, "to fully understand the phenomenon, it must be …

Empowering Nurses Of Minority In The Face Of Incivility And Bullying: Through The Lens Of Phenomenology, Corrine Floyd

Dissertations

Abstract

Up to 85% of nurses have reported exposure to incivility in the workplace (Hunt & Marini, 2012). The often-subtle nature of incivility toward nurses in a minority population may partially explain why it remains a problem. Healthcare organizations realize the need for civility to counter the high turnover rate, staff shortages, and low job satisfaction reported by nurses, but lack understanding of how nurses of a minority population perceive incivility and bullying. This study aimed to answer the research question how do nurses with minority representation experience incivility and bullying versus empowerment in the workplace? A descriptive phenomenological design …

You Are Resilient: Trauma-Informed, Strengths-Based Treatment For Low-Ses, Urban Youth, Courtney Molina

Dissertations

The focus in this review was to explore the benefits and optimal use of trauma-informed, strengths-based care for the therapeutic treatment of low-socioeconomic status (SES), urban youth. Specific focus was given to evidence-based research on the treatment of emotional and behavioral dysregulation among low-SES, urban youth. The review was guided by the following research questions: How can emotional and behavioral dysregulation be symptoms of trauma among low-SES, urban youth; What makes trauma-informed and strengths-based care optimal for the treatment of low-SES, urban youth with dysregulation; and What are clear guidelines for providing trauma-informed, strengths-based care to low-SES, urban youth with …

Adult Criminal Offenders Recollection Of Childhood Exposure To Trauma And Its Impact, Taneshia V. Sims

Dissertations

Trauma can occur at any age and occurs as a result of an individual experiencing or witnessing an event that threatens or has the potential to threaten their life, well-being, or psychological state of mind. The type, duration, and effect of the trauma varied per person and experiences were shared that had negative effects that could last for the duration of their lifetime. The identification of specific risk factors may help in the development of specialized treatment options that may provide an individual with a greater chance of learning skills that could teach them how to deal with the effects …

Bottlenose Dolphin (Tursiops Truncatus) Vocal Responses To Sonar And Spectrally Pink Background Noise, Maria Zapetis

Dissertations

As human populations rise, the level of man-made noise increases globally. Naval sonar and boat traffic are underwater sound sources of particular concern to marine mammal welfare. To better understand the impact of these noise increases on cetaceans, studies can explore animals’ behavioral changes in response to noise. Studies have investigated the ‘dose-response’ relationship between the received sound pressure level of sonar signals and the behavior of cetaceans in the wild, but exposure studies in controlled environments are limited. The studies in this dissertation examined bottlenose dolphin vocal modifications during various experimental noise treatments. Acoustic recordings previously obtained for bottlenose …

Redefining Burnout: Exploring Common Conceptualizations And The Neurophysiology Of Chronic Stress To Establish An Integrated Allostatic Model, Danny A. Guzzi

Dissertations

Burnout is a widely researched stress-related phenomenon associated with numerous adverse outcomes for employees and organizations. Unfortunately, burnout is not well understood and research to this point has been flawed due to a lack of consensus on the definition, dimensionality, and context of the construct. Prevalent conceptualizations of burnout have been criticized for being arbitrarily developed without solid theoretical foundation and for failing to clearly distinguish burnout from depression or other work-related conditions such as compassion fatigue, secondary traumatization, and vicarious traumatization. The current project first examines relevant literature to identify commonalities among prevalent burnout conceptualizations. Then relevant stress research …

Validation Of The Barkley Deficits Of Executive Functioning Scale-Short Form, Brian Sheble

Dissertations

The Barkley Deficits of Executive Functioning-Short Form (BDEFS-SF) is a short rating scale measuring executive functioning in adults. The BDEFS-SF was developed using the 5 highest loading questions from the BDEFS-LF. Consequently, the psychometric qualities of the BDEFS-SF were not investigated using formal methods. In this study, the psychometric attributes of the BDEFS-SF were examined using two separate but similar groups. The first group of 264 men and women aged 18-35 years old completed the BDEFS-SF via an internet survey. The second group of 36 men and women aged 18-35 years old completed the BDEFS-SF and individualized assessments of executive …

Explicit, Implicit, And Behavioral Stigmatization Of Mental Illness, Jessica S. James

Dissertations

Mental health concern is a public health concern that continues to be stigmatized. While the dual process model has been applied to other areas of social cognition (e.g., racism), this framework has not previously been frequently used to examine the stigmatization of mental illness. The current study sought to examine the stigmatization of mental illness within a dual process model to determine the relationship between explicit and implicit stigmatizing attitudes and behaviors. A total of 104 undergraduate students from the University of Southern Mississippi participated in this study. Participants completed multiple implicit and explicit measures of stigmatizing attitudes and behavioral …

The Predictors Of Juvenile Recidivism: Testimonies Of Adult Students 18 Years And Older Exiting From Alternative Education, La Toshia Palmer

Dissertations

Purpose: The purpose of this descriptive, qualitative study was to identify and describe the importance of the predictors of juvenile recidivism and the effectiveness of efforts to prevent/avoid juvenile recidivism as perceived by previously detained, arrested, convicted, and/or incarcerated adult students 18 years of age and older exiting from alternative education in Northern California. A second purpose was to explore the types of support provided by alternative schools and the perceived importance of the support to avoid recidivism according to adult students 18 years of age and older exiting from alternative education.

Methodology: This qualitative, descriptive research design identified …

A Mixed-Methods Study: Self-Efficacy And Barriers To Participation In Workplace Wellness Programs, Massiel Perez-Calhoon

Dissertations

America needs a healthy workforce to sustain the country. The scourge of obesity continues to plague Americans despite government initiatives such as the Affordable Care Act and wellness programs in the workplace to combat this epidemic. However, despite initiatives to make America healthy, barriers continued to impede the nation’s health. Lack of awareness and sensitivity to what motivates individual participants versus group participants built formidable barriers to accessing all workplace employees equitably. The purpose of this study was twofold. First, the intent of this study was to explore the relationship between self-efficacy and the impact on participation and engagement when …

Repercussive Discrimination: Racial Discrimination As An Explanation Of Prevalent Homophobia Among Racial Minorities, Timothy E. Lewis

Dissertations

Generally, attitudes in the United States towards lesbian, gay, bisexual, transgender, and intersex (LGBTI) persons have become more favorable in recent years. Obviously, examining the politics of LGBTI persons and attitudes towards them is important considering that this demographic may account for 10% of the U.S. population; but a more inconspicuous reason it that examinations provide insight into the political landscape of how political minorities address various issues and interests. However, in studying public opinion towards gays and lesbians it is discovered that racial minorities, particularly African-Americans, generally possess negative attitudes to LGBTI persons and possess higher percentages of homophobic …

Multi-Sensory Emotion Recognition With Speech And Facial Expression, Qingmei Yao

Dissertations

Emotion plays an important role in human beings’ daily lives. Understanding emotions and recognizing how to react to others’ feelings are fundamental to engaging in successful social interactions. Currently, emotion recognition is not only significant in human beings’ daily lives, but also a hot topic in academic research, as new techniques such as emotion recognition from speech context inspires us as to how emotions are related to the content we are uttering.

The demand and importance of emotion recognition have highly increased in many applications in recent years, such as video games, human computer interaction, cognitive computing, and affective computing. …