Psychology Commons^™

Neurobiological Mechanisms Of Cognitive Processing Therapy For Post-Traumatic Stress Disorder: A Brain Network Approach, Tessa Vuper

Dissertations

Psychotherapy research is increasingly targeting both psychological and neurobiological mechanisms of therapeutic change. This trend is evident in and applicable to post-traumatic stress disorder (PTSD) treatment research given the high nonresponse rate of individuals with PTSD who undergo cognitive-behavioral therapy (CBT). A review of the literature investigating neurobiological mechanisms of CBT in PTSD reveals inconsistent results that fail to fully support dual process or learning models of CBT effects in the brain. However, network-based models of psychopathology provide a new framework from which to understand both mental disorder symptoms and therapeutic mechanisms. The current study investigated a) whether brain networks …

Women’S Sexual Satisfaction In The Context Of Midlife Relationships: Examining An Ecological Model And Intergenerational Caregiving, Katherine M. Arenella

Dissertations

This study examined an ecological model of sexual satisfaction in midlife women in relationships, and paid particular attention to the role of intergenerational caregiving in predicting satisfaction. Participants were 1,411 midlife women in relationships who participated in the Midlife in the United States (MIDUS) national study. Using split samples for replication purposes, data from this survey were examined to test the hypothesis that an ecological model - including the macrosystem level variable of religiosity, the exosystem level variables of SES, social support, and parenthood, the mesosystem level variables of relationship satisfaction, affectual solidarity, relationship length, and sexual functioning, and the …

Ptsd Symptom Interaction Among Victims Of Interpersonal Violence: A Network Analysis, Robert Graziano

Dissertations

Along with numerous combinations of symptoms, posttraumatic stress disorder (PTSD) is linked to high dropout and non-response rates in treatment. Poor treatment response may be due to an inaccurate conceptualization of PTSD. One newer approach to the conceptualization of psychopathology is network theory. Network theory posits that symptoms both directly and indirectly reinforce each other, with connections between symptoms varying in strength. Previous studies of network theory and PTSD have found intrusive symptoms to be highly central, but have not included samples of individuals traumatized by interpersonal violence. Because trauma type has been shown to predict symptom presentations, this represents …

Sedative And Neurotoxic Properties Of Brexanolone Compared To Midazolam In The Developing Rodent Brain, Jacob Huffman

Dissertations

The developing brain is susceptible to extensive neurotoxicity following exposure to sedative/anesthetic drugs (SADs). Every year hundreds of thousands of children around the world are exposed to SADs with no viable non-neurotoxic agents approved for clinical use. Allopregnanolone (AlloP) has well-established sedative effects in adults and neonates. AlloP and many SADs produce sedation/anesthesia through allosteric modulation of GABA_A receptors, which is one of two principal mechanisms behind SAD-induced neurotoxicity. Evidence suggests AlloP has the unique capacity to regulate key apoptotic factors in adults and is widely involved with critical stages of neurodevelopment, indicating this neurosteroid might serve as a …

A Multilevel Examination Of Unethical Pro-Organizational Behavior Decision-Making: The Role Of Citizenship Pressure, Moral Disengagement, And Moral Intensity, William Bryant

Dissertations

Unethical pro-organizational behaviors (UPB) are unethical behaviors that are intended to benefit the organization or its members. Research on this type of behavior typically involves assessing attitudinal and dispositional predictors of UPB but has largely failed to understand the process through which UPB occurs. One potential elicitation process could be through a perceived obligation that an employee has to help their organization, or citizenship pressure. By adapting Rest’s four stage model of ethical decision-making and social exchange theory, the current study aimed to identify how organizational identification might increase perceptions of citizenship pressure, and how citizenship pressure might influence elements …

Can Ratings Of Item Location Enhance Statistical Item Parameter Estimation? Extending The Feasibility Of Unfolding Irt Models, Michael Mckenna

Dissertations

Research and development of modern psychometric methods such as item response theory have drastically changed the way we understand and carry out the measurement of psychological constructs. Despite this, there has been relatively little adoption by psychological researchers to incorporate these methods into their research. While multiple explanations are surely valid, one oft stated reason is the large sample size requirements of these methods. The sample size requirements of item response theory are needed so that effective estimation of item parameters can be carried out. In an attempt to make these modern measurement methods more accessible and feasible to psychological …

Characteristics Of Notes Taken During The Employment Interview And Their Impact On Organizational Outcomes, James T. Mundell

Dissertations

Note-taking during the interview process has been recommended by both academics and practitioners. However, little research on note-taking in employment interviews exists. Although the limited amount of research points to the benefits of note-taking, characteristics of the notes taken have not been studied in detail and in relation to many organizational outcomes. As such, this study examined characteristics of note-taking (including job relatedness, detail, and valence) and their impact on interview question scores, hiring recommendations, hiring decisions, employee performance, and turnover. Archival data from an organization was utilized and the notes taken during employment interviews were coded to better understand …

More Than Just Words On A Screen: A Biopsychosocial Approach To Understanding Effects Of Race-Related Media, Melinda Kittleman

Dissertations

Racial disparities in physical and mental health are ongoing and well-documented problems in the United States. Black Americans, compared to White Americans, have higher risk of obesity, heart disease, cancer, depression, and substance abuse. Research suggests prejudice and discrimination play a role in racial health disparities. Everyday discrimination is considered a chronic, psychosocial stressor that impacts the health of Black Americans. A biopsychosocial approach states there are various factors that contribute to the pathway from discrimination to disease and proposes complex relationships that explain effects of racial discrimination on health. The current study examined social factors (race-related media), biological factors …

What Does Time Management Mean To You? Exploring Measures Of Time Management And Group Differences., Allison Burrus

Dissertations

For centuries people have been trying to find ways to effectively manage their time. Meanwhile, research in this area has lagged and provided inconsistent results about the outcomes (i.e., well-being and job performance) of the use of time management behaviors. A potential reason for the inconsistent results is the lack of a universal conceptualization of time management making it difficult to compare results. Further, it may be that certain groups use and/or interpret time management behaviors in different ways. This study investigated three of the most popular measures of time management concurrently. First, the measures were examined for statistical artifacts, …

An Exploration Of Contextual Factors Of Weight-Based Discrimination Against Business Leaders, Ellen Hermann Lynch

Dissertations

Two-thirds of the adult population of the United States are considered overweight (Ogden, Carroll, Kit, & Flegal, 2013) and are susceptible to weight-based discrimination in the workplace (Rudolph, Wells, Weller, & Baltes, 2009). The weight-based discrimination experienced by business leaders is relatively unknown. The present research used Leader Categorization Theory (Lord & Maher, 1991) as a framework to examine the extent to which a business leader’s weight is associated with their perceived leadership qualities and effectiveness in two studies. The first study isolated the relationship between the base rate of weight in an organization and the assumed weight of the …

Examining The Gender- And Sexuality-Related Cognitive “Stuck Points” Of Men And Women With Experiences Of Adult Sexual Assault: Implications For Cognitive Processing Therapy, Marin Beagley

Dissertations

Cognitive Processing Therapy (CPT) is considered a gold-standard psychotherapy protocol for the treatment of posttraumatic stress symptoms secondary to a variety of traumatic events. Despite its demonstrated efficacy, there is research to suggest CPT may not be as effective in reducing PTSD symptoms for men with an adult sexual assault trauma as it is for their female counterparts. The purpose of the present study was to determine whether CPT treatment outcome discrepancies may be attributable to gender differences in posttraumatic cognitions, or “stuck points.” As the act of sexual victimization is incongruent with socially prescribed masculine gender norms, it was …

Same-Sex Sexual Coercion Among Women: The Impact Of Minority Stress On Perpetration And Victimization Experiences Of Women Of Diverse Sexual Identities, Allison Kirschbaum

Dissertations

The purpose of the current study was to investigate women’s experiences with same-sex sexual coercion perpetration and victimization. Specifically, I sought to explore the role that the stress of living as a sexual minority plays in these experiences as well as to determine whether the psychological variables of perceived powerlessness, psychological distress, social support, and alcohol use mediate the relationship between minority stress and perpetration and victimization experiences. Data were collected online from self-identified women and individuals assigned female at birth who reported experiencing genital sexual contact with another woman (N=339). Of the cisgender women in the sample, 31.6% reported …

Evaluation Of A Brief Online Alcohol Intervention For College Students: The Role Of Race-Specific Normative Feedback, Racial/Ethnic Identity, And Readiness To Change, Jacob Scharer

Dissertations

Brief online interventions are effective for reducing alcohol use among college students. However, some research has suggested that these interventions may be less effective for African American students. This study evaluated the acceptability and efficacy of a widely available brief online alcohol intervention in a sample of African American and Caucasian college students through a randomized controlled trial. The aims of this study were to determine if providing race-specific normative feedback impacted treatment efficacy for African American students, and if this effect was moderated by racial/ethnic identity and readiness to change. Participants were 310 heavy drinking African American and Caucasian …

Psychological Correlates Of Diverse Coerced Sexual Experiences: Clarifying Classes And Severity Continuums Of Sexual Act And Coercive Tactic, Sara Kern

Dissertations

Although different coerced sexual experiences have been associated with different psychological symptoms (e.g., Davis et al., 2014), many limitations have plagued previous classification systems and severity continuums of coerced sexual experiences. The present study aimed to uncover meaningful differences across classes of coerced sexual experiences for the dimensions of sexual act and coercive tactic to inform future classification systems and severity continuums. Participants with a history of coerced sexual experiences (N = 402) completed an online survey about their worst or only coerced sexual experience, identifying the worst (or only) sexual act and the worst (or only) coercive tactic that …

You Look Like Me: The Impact Of Demographic Similarity On Picture Primes’ Effectiveness, Jennifer L. Unnerstall

Dissertations

Past research has clearly demonstrated the ability of various primes to influence behavior; however, little is understood about how and why primes work. The present research takes a theory-based approach to begin to understand this further. First, it investigates whether a picture prime has the ability to influence cooperative and competitive concept activation and implicit associations. Then, it examines whether the characteristics of the picture prime, specifically the race of the individuals depicted in the prime and whether it matches the race of the participant (i.e., demographic similarity), moderate these effects. Secondly, the present research investigates whether the same picture …

Understanding Comorbid Depression In The Context Of Ptsd Through Underlying Dimensions, Melissa Turkel

Dissertations

Depression co-occurs with Posttraumatic Stress Disorder at a high rate, resulting in numerous complications for pathology and treatment. More research is needed regarding variables that may explain this common comorbidity. One possible variable is that of underlying dimensions, latent factors that give rise to these manifestations of psychopathology. This study explored potential underlying mechanisms of comorbid PTSD and depression, including negative affect, rumination, emotion dysregulation, neuroticism, and behavioral inhibition. While previous studies have investigated these dimensions individually, there is a dearth of research that simultaneously investigates multiple dimensions or determines the relative contributions of underlying dimensions to psychopathology. Thus, the …

The Influence Of Stressful Life Events On The Development Of Type 2 Diabetes, Joshua Minks

Dissertations

This study examined the relationship between distress and the development of Type 2 diabetes mellitus (T2DM) in the presence of established risk factors. Distress secondary to mental health disparities, stressful life events, and work conditions has been shown to promote insulin resistance and the development of T2DM.

Subjects (N=79) diagnosed with T2DM within the previous six months were recruited from SSM Health Centers and VA Medical Centers in the greater St. Louis area. They completed the Recent Life Changes Questionnaire, ENRICHD Social Support Instrument, and a demographic survey and analyses were conducted to determine differences between the veteran …

Motivation Predicts Self-Control Of Racial Bias After Viewing Alcohol Advertisements, Zachary Wolfgang Petzel

Dissertations

Exerting self-control shifts motivation toward rewarding cues (i.e., approach motivation) and impairs control of racial bias. However, whether approach motivation predicts deficits in control of racial bias is unknown. Exertion of self-control is also related to alcohol use, but whether exerting self-control shifts motivation toward alcohol-related cues is not established. Similar to exerting self-control, viewing alcohol-related cues shifts motivation and promotes racial bias. The current study examined the interaction between exerting self-control and viewing alcohol-related cues on approach motivation and its influence on racial bias. Participants (N = 71) exerted (or did not exert) self-control and then viewed neutral …

The Dreaded Performance Appraisal: Can The Process Ever Be Comfortable?, Lauren Labat

Dissertations

Previous research has indicated that individuals dislike and resist the performance appraisal process. Fewer studies have examined reasoning for unintentional rating distortion that may result from a lack of training and clear understanding of how to effectively evaluate behaviors. Researchers have shown that the appraisal process is uncomfortable for raters, but empirical studies have yet to explore how to reduce this discomfort. Rater training research has revealed that trained raters have improved observational skills, a more precise vocabulary to describe behaviors, and improved rating accuracy. This research explored the relationship between performance appraisal discomfort and trait motivational factors (i.e., personality …

Development And Validation Of A Multidimensional Political Behavior Scale, Amanda Thomas

Dissertations

Years of research conducted into organizational politics has resulted in an expanded understanding of what politics “do” through the investigation of antecedents and outcomes (Lepisto & Pratt, 2012). The literature is somewhat deficient, however, in explaining and measuring what politics “are”. While there are numerous existing measures of organizational politics, the measurement and methodology in this area remains complex due to several issues. The existing literature notes design and measurement (Ferris, Adams, Kolodinsky, Hochwarter, & Ammeter, 2002; Nye & Witt, 1993), definitional (Gunn & Chen, 2006; Lepisto & Pratt, 2012), and level of analysis (Dipboye & Foster, 2006; Fedor & …

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 …

Intercultural Coworker Relationships (Icors) In The Global Workplace: A Grounded Theory Study, Jennifer L. Morton

Dissertations

Previous research supports what employees intuitively sense: peers make the place (Chiaburu & Harrison, 2008; Schneider, 1987). Extant research suggests coworker relationships have critical influence on outcomes ranging from turnover (Felps, Mitchell, Hekman, Lee, Holtom, & Harman, 2009) to creativity (Homan, Buengeler, Eckhoff, van Ginkel, & Voelpel, 2015) to organizational commitment (Viswesvaran & Ones, 2002) to employee health and well-being (Heaphy & Dutton, 2008). Despite the increase of Intercultural COworker Relationships (ICORs), particularly in multinational firms in the technology industry, research has yet to examine what defines coworker relationship quality in the presence of national cultural differences. In other words, …

Family Care Partners Of Chronically Ill Older Adults: The Role Of Uncertainty In Illness, Jillian Pine

Dissertations

Abstract This study integrated research on family care partners of older adults and

research on uncertainty in chronic illness. Previous findings were extended by examining care partners of older adults with multiple chronic conditions and highlighting early-stage undiagnosed cognitive impairment as a uniquely unclear condition. Participants were 45 women assisting community-dwelling, earlier generation older adults with multiple chronic health conditions and a prognosis of more than six months. Online survey data were used to test the hypotheses that increased illness uncertainty would be associated with increased care partner-recipient relationship strain and increased care partner perceived stress. This study also hypothesized …

Why Giving Up The Keys Can Be Terrifying: Examining Driving Retirement Through A Terror Management Theory Paradigm, Perri Navarro

Dissertations

Driving retirement, or giving up the keys, is a current topic of interest in the gerontological literature. Most adults will outlive their ability to drive safely, yet do not plan for driving retirement, although planning for driving retirement appears to result in better outcomes. The current study examined the possibility that older adults avoid driving retirement because it is a mortality prime (reminder of death), as well as the possible role of implicit self-esteem in buffering against mortality concerns specifically in an older adult population. Participants in the current study (n=90) were randomly assigned into one of three …

Estimating Wasi Iq Scores To Assist In Identifying Elementary School Gifted Students, Debra Garrett Pregler

Dissertations

Identifying gifted students early is important so they may receive adaptations in their learning environment including admittance into gifted programs (Subotnik, Olszweski-Kubilius, & Worrell, 2012). An effective method to increase the likelihood of identifying gifted students is needed (Pfeiffer, 2003). Admission at the elementary level primarily uses the individually-administered intelligence test; yet, the test is only administered to students nominated to the gifted program. The purpose of this study was to determine if individually-administered IQ test scores were related to specific information available to the elementary school counselor to aid in the determination of unidentified gifted elementary school students who …

Clinician Bias In The Diagnosis Of Posttraumatic Stress Disorder: How Clinician Characteristics And Training May Relate To Diagnosis, Renee Boeck

Dissertations

As our understanding of PTSD has advanced, changing demographics in the United States over the past few decades have led to a growing awareness of the mental health needs of an increasingly diverse and multicultural population. Research on ethnoracial differences in PTSD has had mixed results and additional research exploring possible contributing factors is needed to better explain observed differences. This study explored the presence of and contributing factors to clinician bias in the diagnoses of PTSD based on race and context. It examined whether clinicians were more likely to diagnose PTSD in a Black or White man due to …

Examining The Relationship Between Posttraumatic Stress Symptoms And Posttraumatic Growth: Pathways To Thriving In The Face Of Adversity, David Strasshofer

Dissertations

Research has largely focused on the negative physical and psychological consequences of trauma exposure. In contrast, posttraumatic growth is a relatively recent addition to our understanding of people’s response to life’s struggles. Posttraumatic growth (PTG) is conceptualized as positive changes in a person’s life following a cognitive struggle in the aftermath of trauma. However, PTG research is a relatively nascent line of empirical inquiry and there are several major unanswered questions about the construct and its utility. Part of this is due to conflicting findings related to the relationship between PTG and psychological distress and adaptive significance. The current study …

Mindfulness As A Vigilance Intervention: Examining Its Impact On Stress And Mental Demand, Kelli Huber

Dissertations

Occupations involving vigilance performance (i.e., sustained attention in monitoring for rare environmental threats) are known to experience vigilance decrement, a decline in performance over time. These occupations are known to be cognitively and emotionally challenging, giving rise to harmful effects for employees in them and presenting safety implications for the welfare of others. The current study investigated mindfulness as a potentially viable intervention to alleviate outcomes of vigilance demands: stress and mental demand. A mindfulness induction was compared to an unfocused control condition in which both were administered during a break from a vigilance task, specifically, a baggage screening task. …

Factors Related To Ethnocultural Empathy Among White Counselor Education Faculty: Implications For African American Male Students., Courtney R. Boddie

Dissertations

Cultural competence represents a central element of the professional practices exhibited by professional counselors and counselor educators (CACREP, 2016). Inconsistent with the place it holds in the field, cultural competence has been minimally studied among those responsible for gatekeeping, teaching, supervision, and research – faculty. Among variables relevant to measurable outcomes is ethnocultural empathy (EE), ideal as it is described as a combination of empathic thoughts, feelings, and behaviors toward others with whom you have differences in cultural identities and experiences (Wang et al., 2003). This study sought to add to the body of literature on the cross-racial interactions between …

Exploring Internalized Classism Using The Regressive Model Of Self-Stigma, Johanna Collier

Dissertations

A growing body of literature on classism suggests that negative attitudes and treatment based on one’s social class may have wide-ranging impacts on one’s sense of self, behaviors, and well-being. Scholars have theorized that internalized classism may be eroding dignity and contributing to observed health disparities between those of higher and lower social classes, but little quantitative research has explored the subject. The present study attempted to address this gap in the literature by applying the regressive model of self-stigma, a model originally developed for internalized mental health stigma, to internalized classism to better understand how to define and measure …