Social and Behavioral Sciences Commons^™

The Examination Of Discrimination And Social Bias Toward Interracial Relationships, Tarah Midy

Graduate Dissertations and Theses

Although rates of approval toward interracial couples are increasing (Carroll, 2007), interracial couples report facing prejudice and discrimination including disapproval and ostracism from family, friends, and the general public (Carbone-Lopez, 2013; Martin, Campbell, Ueno, Fincham, 2013; Potter & Thomas, 2012; Troy, Lewis-Smith, Laurenceau, 2006). However, there is growing evidence as acceptance rates and challenges faced by couples vary (Pew Research Center, 2012, Golebiowska, 2007), that experiences are different for couples depending on the racial group and gender of both partners involved.

To better understand the experience of different interracial couples, I conducted two studies to examine the particular stressors they …

Association Between The Magnitude Of The Immune Response And Recurrent Major Depression Disorder In Humans And Depression-Like Behavior In Animals, Anastacia Kudinova

Graduate Dissertations and Theses

There is a growing body of evidence supporting the association between inflammation and major depressive disorder (MDD). One plausible mechanism for this association is sensitization of the immune response, possibly due to prior exposure to stressors. To investigate the validity of this hypothesis, a series of three complimentary cross-species studies was conducted. Study 1 examined the associations between circulating levels of inflammatory markers and in vitro immune reactivity with women’s history of recurrent MDD (rMDD) and their current symptoms of anhedonia. The potential moderating role of women’s history of childhood abuse was also examined. Study 2 and 3 focused on …

5-Httlpr, Drd4 Gene, College Students’ Psychological Characters And Academic Performance, Weiyi Guo

Graduate Dissertations and Theses

The purpose of this study, “Genetic basis of Academic Performance,” is to evaluate associations between the 5-HTTLPR, the DRD4 gene, psychological characteristics including metacognition and depression, and academic performance as reflected in SAT scores. We discovered that participants with 2-repeat or 7-repeat alleles of the DRD4 gene have significantly lower scores on the Metacognition tests (P = 0.022) and two subclades of metacognition, “Cognitive Self-Consciousness” (P = 0.021) and “Need to Control Thoughts” (P = 0.040), as compared to those without 2-repeat or 7-repeat alleles. 7-repeat allele DRD4 gene carriers have significantly higher scores for alcohol use disorders than those …

Investigating The Effects And Mechanisms Of A Brief Savoring-Based Intervention In Partnered Individuals, Binghuang A. Wang

Graduate Dissertations and Theses

Due to numerous barriers to mental health care access, there exists an extensive need for brief cost-effective interventions for couples. Savoring, which invites individuals to prolong and extend the positive aspect of their experiences, is a promising intervention candidate. Research on savoring has established savoring-based interventions to be efficacious at producing positive intra and interpersonal outcomes. The current investigation expands upon existing savoring research by examining the effects of savoring on an adult population in committed romantic relationships. We expect savoring to be better than control at improving intra and interpersonal outcomes. Furthermore, we aim to investigate intrapersonal factors as …

Intra- And Inter-Personal Predictors Of Posttraumatic Stress Disorder And Sexual Risk-Taking Behaviors, Seigie L. Kennedy

Graduate Dissertations and Theses

Sexual risk-taking, while common in college culture, can increase the risk of sexual victimization. Nearly 20% of college women have been sexually assaulted (Krebs et al., 2009). Moreover, Posttraumatic Stress Disorder (PTSD) has been associated with sexual risk-taking (Johnson & Johnson, 2013). Self-esteem and social support are known to be related to PTSD and sexual risk-taking (Gullette & Lyons, 2006; Johnson & Johnson, 2013). This study aims to examine sexual victimization history, self-esteem, and social support as relative predictors of PTSD and sexual risk-taking using a sample of 229 female undergraduates. Results suggest that enhancing self-esteem, as opposed to bolstering …

Effects Of Chemogenetic Inhibition Of Dopamine Transporter- Or A2a-Expressing Neurons On Spontaneous Activity And Motivation To Consume A Palatable Food Reward, James D. Wherry

Graduate Dissertations and Theses

Dopamine (DA) transmission in the striatum influences the motivated pursuit of rewarding stimuli. Pharmacological and opto- and chemo-genetic studies have suggested that the release of DA onto D2+/A2A+-expressing striatopallidal neurons, plays a role in this process. To determine the potentially dissociable roles of DA-releasing ventral midbrain and striatopallidal neurons on motivational processes, we employed double transgenic mice that expressed inhibitory DREADDs—designer receptors that are activated only by otherwise inert ligands—only in dopamine transporter (DAT) or A2A adenosine receptor (A2A) expressing neurons, allowing us to transiently inhibit either DA-releasing neurons (DATcre/DREADD) or striatopallidal neurons (A2Acre/DREADD) during various tests. In the first …

Heritable Variation In Reward Sensitivity And Impulsive Cction And Choice In A Genetically Diverse Inbred Mouse Panel, Lauren S. Bailey

Graduate Dissertations and Theses

Research in animal models and human subjects points towards reward sensitivity and impulsivity as being characteristics that predict greater positive subjective responses to stimulant drugs. The Collaborative Cross (CC) recombinant inbred mouse strains and their inbred founders are a powerful genetic reference panel that has potential as a tool for revealing genetic correlations. The CC/DO founder strains were used to examine the heritability of reward sensitivity and impulsivity traits. Founder strains were tested for activity in an open field, reward sensitivity, and reversal learning (impulsive action) or delay discounting (impulsive choice). Significant heritability for anticipatory responding within the reversal task, …

Causes And Predictors Of Thematic Intrusion On Human Similarity Judgments, Garrett R. Honke

Graduate Dissertations and Theses

Most theoretical accounts of psychological similarity maintain that similarity judgments are based on shared features (and shared relations among those features, e.g., the commonalities between spatula and ladle). Accounts rarely include associations between targets of comparison (e.g., the association between egg and spatula) as a contributor to similarity judgments. This position is taken despite the fact that people will often choose associates over things with shared features and relations in similarity judgment tasks. So-called dual-process models - where thematic integration and feature (and relation) based comparison are component processes of perceived human similarity - have been proposed to handle this …

Mind-Craft: Exploring The Relation Between "Digital" Visual Experience And Orientation In Visual Contour Perception, Daniel Hipp

Graduate Dissertations and Theses

Visual perception depends fundamentally on statistical regularities in the environment to make sense of the world. One such regularity is the orientation anisotropy typical of natural scenes; most natural scenes contain slightly more horizontal and vertical information than oblique information. This property is likely a primary cause of the “oblique effect” in visual perception, in which subjects experience greater perceptual fluently with horizontally and vertically oriented content than oblique. However, recent changes in the visual environment, including the “carpentered” content in urban scenes and the framed, caricatured content in digital screen media presentations, may have altered the level of orientation …