Social and Behavioral Sciences Commons^™

Studies On High-Throughput Single-Neuron Rna Sequencing And Circadian Rhythms In The Nudibranch, Berghia Stephanieae, Thi Bui

Masters Theses

One of the goals of neuroscience is to classify all of the neurons in the brain. Neuronal types can be defined using a combination of morphology, electrophysiology, and gene expression profiles. Gene expression profiles allow differentiation between cells that share similar characteristics. Leveraging the advantage of Berghia stephanieae (Gastropoda; Nudibranchia), which has around 28,000 neurons, I constructed high-throughput single-neuron transcriptomes for its whole brain. I produced a single-cell dissociation protocol and a custom data analysis pipeline for data of this nature. Around 129,000 cells were collected from 18 rhinophore ganglia and 20 circumesophageal ring ganglia (brain), consisting of the cerebropleural, …

Getting The Message Across: Flexitarians As Messengers For Meat's Climate Change Impacts, Joel Ginn

Masters Theses

Meat consumption has been a prominent part of humanity’s dietary culture, particularly in modern, Western developed nations. However, recent research has shown that collectively reducing our consumption of animal products can have major benefits for mitigating our environmental footprint. Despite a consensus among climate scientists on its potential impact, the public does not recognize the effectiveness of this behavioral shift. Recent efforts to address this have created movements and organizations that focus on reduction of meat consumption (e.g. flexitarianism, reducetarianism, Meatless Mondays), rather than elimination of meat consumption (e.g. vegetarianism, veganism) with the intent of creating a more acceptable message, …

Understanding Shame And Guilt In Chinese Culture, Se Min Suh

Masters Theses

Research on shame and guilt has mainly been conducted in individualistic Western cultures. Some qualitative research, however, examined shame and guilt experiences in Chinese culture. Bedford (2004) identified 7 terms that represent emotional experiences of “shame” and “guilt.” We report 3 studies examining Mandarin Chinese speakers’ recalled experiences of negative self-conscious emotions and their related appraisals and motivations. Results reveal that instead of categorizing negative self-conscious emotion terms into 2 superordinate categories of “shame” and “guilt,” 3 clusters are more suitable based on their correlations and associated characteristics. Implications for cross-cultural studies on self-conscious emotions are discussed.

Cumulative Grief, Xuan Pham

Masters Theses

A written thesis to accompany the M.F.A. Exhibition Cumulative Grief, in which the artist's personal and familial narrative explores the complexity and nuances of racial grief.

Recursion In Language And Number: Is There A Relationship?, Diego Guerrero

Masters Theses

Numbers are an important part of the cultural knowledge in the modern world. Its use is fundamental in the conception and development of modern science. There are different sets of numbers called numerical systems. The most frequently used numerical system is the set of natural numbers that is composed of positive integers. Natural numbers have several forms to express the cardinality; the most frequently used is the base-10 number system, it represents the number using base quantities and powers of ten. For example, the current calendar year could be expressed as 2018 ; it’s notation describes the additive and multiplicative …

Preferences In Learning "Hiragana": A Comparative Study Between Mobile Apps And Paper Worksheets, Michiko Nakada

Masters Theses

In 2020, technology is generally accepted, and we can see many people using their digital devices such as smartphones everywhere. It is easy to see how dependent we are on technology, anytime and anywhere. Mobile apps are one of the time-effective tools for our daily lives. College students in the United States are always busy with their classes and assignments, and for them, apps are not only for having fun but are also convenient, reliable, and essential supporting tools for their academic and daily lives.

This paper examines the students’ preferences in learning the Japanese writing system “Hiragana” with mobile …

Associations Between Cumulative Concussion And Academic Success In University Students, Michael Broggi

Masters Theses

Individuals with a history of multiple concussions may be at risk for relative weaknesses in executive functioning and processing speed. These weaknesses could adversely influence academic skills and academic success. This study determined if the relative weaknesses in executive functions and processing speed mediate associations between multiple concussions and academic outcomes in university students. To achieve this aim, university students with a history of three or more concussions (n = 58) were compared to two control groups (ns = 57) on measures of executive functions, processing speed, academic skills, and academic success. Results indicated no significant differences between the groups …

Early Neural And Environmental Predictors Of Later Emotion Dysregulation In Children With And Without Adhd Symptoms, Shannon Gair

Masters Theses

Attention deficit/hyperactivity disorder (ADHD) is one of the most common childhood neurodevelopmental disorders and is characterized by excessive inattention and/or hyperactivity and impulsivity. There is evidence that many children with ADHD experience emotion dysregulation, but little is known about the mechanisms by which children with ADHD develop difficulties with emotion dysregulation. The goal of the present study is to identify early neural and environmental predictors of emotion dysregulation and determine whether these factors interact in contributing to later emotion dysregulation. In this study, children (aged 4-7) with ADHD symptoms and typically developing children participated. Measures of emotion socialization and neural …

Relationships Between Personality Type And Cognitive Ability In Marmoset Monkeys (Callithrix Jacchus), Zachary Marciano

Masters Theses

Personality refers to multiple traits that are thought to be stable over time and across situations. It is recognized that personality has a neural basis and is associated with health outcomes. Whether personality is also associated with cognitive ability, however, is still a matter of intense debate. One way to examine these potential relationships is to use a nonhuman primate model for which complexities present in humans can be minimized. Recent research into the varying personality types of marmoset monkeys suggests that there are predominantly three to five core primary domains that most marmosets and other primates can be categorized …

Sequential Encoding In Visual Working Memory: In The Absence Of Structure, Recency Determines Performance, Jeffery Durbin

Masters Theses

Most prior investigations of visual working memory (VWM) presented the to-be-remembered items simultaneously in a static configuration (e.g., Luck & Vogel, 1997). However, in everyday situations, such as driving on a busy multilane highway, items (e.g., cars) are presented sequentially and must be retained to support later actions (e.g., knowing if it’s safe to change lanes). In a simultaneous presentation, the relative positions of items are apparent but for sequential presentation, relative positions must be inferred in relation to the background structure (e.g., highway lane markings). To examine sequential encoding in VWM, we developed a novel task in which dots …

Changes In Color Guidance Over The Course Of A Complex Visual Search, Ryan Papargiris

Masters Theses

When searching for an object, we store a mental representation of the target, which guides our search through the use of attention. The effectiveness of this search guidance varies depending on the task and the relationship between target and distractors. With a better understanding of how search guidance changes over time within a trial, we can better compare the differences between experimental conditions. Eye tracking data from a variety of search tasks were analyzed to determine how color guidance varied over the course of the trial. Color guidance for a given fixation was evaluated based on the distance in color …

To Defend Or Not To Defend--The Low Glorifier's Question: The Relationship Between Low Glorifiers' Defensiveness Of Ingroup-Perpetrated Harm And The Tangibility Of Intergroup Conflict, Quinnehtukqut Mclamore

Masters Theses

Members of groups in conflict are often defensive of ingroup-perpetrated violence, especially if they glorify their ingroup. While past literature has established that high glorifiers are unconditionally defensive of their ingroup, findings regarding low glorifiers are mixed, with some studies finding low glorifiers to be similarly defensive as high glorifiers and others finding low glorifiers to not be defensive or even critical of the ingroup. Across six studies, I investigated whether perceiving a conflict to be tangible (rather than intangible) drives defensiveness among low glorifiers. I tested this hypothesis across two national contexts that were naturally closer (Israel) or farther …

Visual Recollection For Non-Declarative Representations, Patrick Sadil

Masters Theses

Recollection is a pattern completion process that enables retrieval of arbitrarily associated information following minimal study. These attributes enable recollection to support retrieval of many kinds of mnemonic representations, from highly associative contextual information to very specific low-level representations. However, recollection is typically studied in the context of declarative memory tasks, in which participants exhibit recollection by explicitly reporting on the recollected information. Is it the case that recollection is limited to declarable representations, or is it a more general process that occurs for any representation? Two experiments and a novel analysis technique are presented to answer this question. The …

Testing Recognition Memory Models With Forced-Choice Testing, Qiuli Ma

Masters Theses

People’s ability to call an experienced item “old” and a novel item “new” is recognition memory. Recognition memory is usually studied by first asking participants to learn a list of words and then make judgments of old (studied) or new (not studied) for test words. It has long been debated whether the underlying process of recognition memory is continuous or discrete. Two types of models are compared specifically that assume either discrete or continuous information states: the 2-high threshold (2HT) model and the unequal variance signal detection (UVSD) model, respectively. Researchers have used the receiver operation characteristic (ROC) function and …

Racial Differences In Perceptions Of Attention-Deficit/Hyperactivity Disorder Behavior, Sungha Kang

Masters Theses

Previous research has suggested there may be racial differences in how adults perceive and rate children’s ADHD behavior (i.e., inattention, hyperactivity, impulsivity). The current study examined these differences between African-American/Black (AA/B) parents and European-American/White (EA/W) parents and teachers. Participants watched video clips of children in classrooms and rated their ADHD behaviors and their likelihood of having ADHD. Results showed that EA/W parents and teachers rated African-American boys’ ADHD behaviors and their likelihood of having ADHD higher than AA/B parents. Mechanisms by which these differences exist were explored, including beliefs about stigma related to ADHD, values in movement and expressiveness, experiences …

Patient Motivational Language As A Predictor Of Symptom Change, Hazard Of Clinically Significant Response, And Time To Response In Psychotherapy For Generalized Anxiety Disorder, Brien J. Goodwin

Masters Theses

Change-talk (CT), or self-arguments for change, has been associated with favorable patient outcomes, while counter change-talk (CCT), or self-arguments against change, has been associated with poorer outcomes. Most studies on change language have focused on the prediction of distal posttreatment outcomes, while the prediction of more proximal outcomes has remained largely untested. Addressing this gap, we examined early treatment CT and CCT as predictors of worry change trajectories, “hazard” of clinically significant response, and time to response (i.e., outcome efficiency) in CBT and CBT integrated with MI (MI-CBT) for generalized anxiety disorder (GAD). We also explored whether treatment type moderated …

The Effects Of Reward And Risk Level Associated With Speeded Actions: Evidence From Behavior And Electroencephalography, Xingjie Chen

Masters Theses

Choosing a course of action in our daily lives requires an accurate assessment of the associated risks as well as the potential rewards. The present two studies investigated the mechanism of how reward and risk level influence the motor decisions of speeded actions (Chapter 2) and its neural dynamics (Chapter 3) by focusing on the beta band (15-30 Hz) oscillation patterns reflected in the EEG signals. Participants performed a modified version of the Go-NoGo task, in which they earned reward points based on the speed and accuracy of response. On each trial, the reward points at stake (120 vs. 6) …

Influence Of Household Chaos On Associations Between Physiology And Behavior, Sarah Mccormick

Masters Theses

Internalizing behaviors, or behaviors related to behavioral inhibition and the tendency to withdraw from novelty or uncertainty, are stable over time. There is substantial evidence indicating the association between greater resting right lateralized frontal EEG alpha asymmetry and negative affect as well as internalizing behaviors (Coan & Allen, 2003; Henderson, Fox, & Rubin, 2001; Fox, 1991). Further, right frontal asymmetry has been shown to be a stable marker of the presence of psychosocial risk (e.g. child maltreatment; see Peltola, Bakermans-Kranenburg, Alink, Huffmeijer, Biro, & van IJzendoorn, 2014 for meta-analyses). However, little is known about the influences of the home and …

Children's Self-Regulation During Reward Delay, Abigail Fontaine

Masters Theses

Individuals who display high levels of reward sensitivity are motivated by and respond to reward related cues, thus exhibiting more approach-motivated behaviors. A majority of the research on physiological indices of reward sensitivity in relation to self-regulatory abilities has focused on adults or adolescents, with relatively little work examining these associations in children. Thus, the current study sought to examine whether a common neural measure of reward sensitivity, left frontal electroencephalogram (EEG) asymmetry, assessed in early childhood was predictive of children’s later self-regulation abilities in the context of reward delay. Emerging inhibitory control skills were also examined as a potential …

Effort-Related Motivational Dysfunctions: Behavioral And Neurochemical Studies Of The Wistar-Kyoto Rat Model Of Depression, Brendan Abbott

Masters Theses

Depression and related disorders are characterized by motivational dysfunctions, including deficits in behavioral activation and exertion of effort. Animal models of relevance to depression represent a critical starting point in elucidating the neurobiological mechanisms underlying motivational dysfunctions. The present study explored the use of the Wistar-Kyoto (WKY) animal model of depression to examine effort-related functions as measured by voluntary wheel running and performance on a mixed fixed ratio 5/progressive ratio (FR5/PR) operant task. Given the known link between activational aspects of motivation and the mesocorticolimbic dopamine (DA) system, the behavioral effects of d-amphetamine (0.5 and 1.0 mg/kg, IP), a psychostimulant …

Age Group Differences In Affect Responses To A Stressor, Molly Mather

Masters Theses

Older adults may be better able to modulate their emotional experiences than younger adults, and thus may recover more quickly from negative stressors. Additionally, older adults may be more likely to experience co-occurrence of negative and positive emotions in the setting of negative stressors, which may facilitate emotion recovery. To date, few studies have investigated the nature of age group differences in spontaneous emotional responses to a standardized stressor. The current study utilizes a laboratory mood manipulation to determine age group differences in emotion recovery in negative and positive affects, as well as age group differences in the co-occurrence of …

Borderline Personality And Risk-Taking: Examining The Role Of Impulsivity Across Domains, Colten Karnedy

Masters Theses

Individuals with borderline personality disorder (BPD) and high levels of BPD traits have demonstrated greater rates of engagement in risky, self-destructive behaviors compared to healthy controls. Specifically, impulsivity has been theorized to underlie many of these risky behaviors. Although existing self-report literature suggests that individuals with BPD are more impulsive than controls, evidence from behavioral measures remains inconclusive. Likewise, there is scant research examining specific domains of impulsivity associated with risky behaviors in BPD, which is problematic given that impulsivity is a diagnostic criterion for BPD. Thus, the proposed research aims to bridge this gap in the literature by examining …

Understanding Relational Competence In Emerging Adult Adoptees: A New Way To Conceptualize Competence In Close Relationships, Krystal K. Cashen

Masters Theses

Relatively little research has focused on the positive adjustment of emerging adult adoptees (Palacios & Brodzinsky, 2010). Given the developmental context of emerging adulthood (Arnett, 2000), it is important to select a measure of adjustment that reflects the increased ambiguity seen in this time period. The present study aims to develop and validate a measure of relational competence, or competence in one’s closest relationship regardless of relationship type (i.e., romantic vs. nonromantic). This measure will be created by adapting the Romantic Competence Interview, a measure of romantic competence previously used with emerging adults (Shulman, Davila, & Shachar-Shapira, 2011). Participants …

Group Differences In Compassion Fade And Prosocial Behavior, Greg Larsen

Masters Theses

When people learn about a large-scale crisis, they often feel more compassion for its victims when they can fixate on a single, identifiable victim, compared to many victims - a phenomenon known as ‘compassion fade.’ However, throughout the growing compassion fade literature, researchers have mostly given a face to large groups using a single child - a face which may be particularly stirring because children are seen as both likable and incapable of fending for themselves. I conducted two experiments to determine whether the magnitude of this phenomenon varied as a function of characteristics of the victims - namely, how …

Search Guidance Can Be Adjusted By Experience With Search Discriminability, Junha Chang

Masters Theses

Several recent studies show that previous experience can influence observers’ search strategy in a way that improves search performance. The purpose of the present study is to investigate how the experience of difficult color discriminability affects search strategies. Two participant groups either experienced difficult color discriminability in a half of the trials (i.e., hard-discrimination group) or experienced easy search in all trials (i.e., easy-discrimination group) in a dual-target search task. Participants were required to respond to the presence of a target (colored T) among distractors (colored pseudo-L). Eye movements were recorded to understand which feature information is used to guide …

Validity Of Adhd Symptoms In Toddlers, Hallie Brown

Masters Theses

Attention deficit/hyperactivity disorder (ADHD) is one of the most common child neurodevelopmental disorders. The disorder is typically diagnosed in elementary school, but there is growing evidence for the validity of ADHD in preschoolers, and symptoms likely emerge even earlier than preschool years. Research suggests that ADHD symptoms can be evident in toddlers beyond developmentally appropriate behavior, and symptoms in toddlers are predictive of later impairment. However, few studies have examined the validity of Diagnostic and Statistical Manual of Mental Disorders (DSM) ADHD symptoms in this younger population. The present study examined the 18 DSM ADHD symptoms in a community sample …

Perceptions Of General And Situational Influence In Predicting Negative Conflict Behavior: The Moderating Role Of Attachment Style, Amy Newberg

Masters Theses

Because of the numerous ways to operationalize power, much of the literature about power in relationships has not been cohesive. However, to understand when and how perceptions of power are associated with behaviors in relationships, multiple conceptualizations of power must be considered along with personal characteristics. The present study tested how perceptions of general power and situational power interact to predict negative behaviors during relationship conflict for people of various attachment orientations. Additionally, we tested if effects remained stable or changed over the early years of marriage. We found that low general and low situational influence did interact to predict …

A Representational-Hierarchical Account: A New Theory Of False Memories, D. Merika Wilson

Masters Theses

Past research has supported a representational-hierarchical theory of memory and perception that extends the ventral visual stream into the medial temporal lobe. In this account, representations are organized in a hierarchical manner, such that structures located further anterior in the brain contain complex representations of whole objects and areas further posterior in the visual cortex contain representations of simple features. When conjunctive representations are compromised, an individual must rely on simple-feature representations to complete mnemonic and perceptual tasks. However, these simple-feature representations are susceptible to feature-level interference, which can cause false recognition of novel objects. The goal of the present …

Mobilizing The Advantaged To Protest Injustice With The Disadvantaged, Hemapreya Selvanathan

Masters Theses

The participation of advantaged group members in collective action with the disadvantaged group to challenge inequality is crucial to building a social movement. Although prior work has found that an invitation to participate in collective action is a strong predictor of participation, the extent to which advantaged group members are influenced by such invitations is not known. The present research investigates the effect of the race of an inviter (White vs. Black) on Whites’ willingness to participate in collective action for racial justice as a function of their underlying prejudicial attitudes. Study 1 found that greater internal motivation to respond …

Duty- Vs. Rights-Focused Mindsets And Their Relationships With Prosociality, Seyed Nima Orazani

Masters Theses

Five studies investigated the links between rights-focused (RFM) and duty-focused mindsets (DFM) and prosociality. Making salient both RFM and DFM in a within-participants designs, Studies 1-2 examined the relationships of RFM and DFM with a number of outcomes related to prosocial attitudes. Results indicated that RFM and DFM both uniquely increased prosociality. Experimentally inducing either RFM or DFM in a between-participants design, Study 3 found that RFM had stronger effects on prosocial outcomes than DFM. Further, Study 3 showed that this relative advantage of RFM over DFM in boosting prosociality was due to RFM (relative to DFM) increasing people’s perceived …