Psychology Commons^™

Testing Models Of Context-Dependent Outcome Encoding In Reinforcement Learning, William M. Hayes Iv

Theses and Dissertations

Previous studies of reinforcement learning (RL) have established that choice outcomes are encoded in a context-dependent fashion. Several computational models have been proposed to explain context-dependent encoding, including reference point centering and range adaptation models. The former assumes that outcomes are centered around a running estimate of the average reward in each choice context, while the latter assumes that outcomes are compared to the minimum reward and then scaled by an estimate of the range of outcomes in each choice context. However, there are other computational mechanisms that can explain context dependence in RL. In the present study, a frequency …

Impact Of Number Of Alternatives And Spatial Arrangement On Decoy Effects, Jacob M. Stanley

Theses and Dissertations

The way in which people make decisions is largely guided by the context of the choice set. Choice sets that contain decoy alternatives can result in context effects that violate rational principles of decision making. Most studies on contextual choice manipulate preference among two alternatives in the context of a decoy using three option choice sets. However, many real-world decisions are made among choice sets with many more than three alternatives, such as in online shopping. We tested for attraction and compromise decoy effects in choice sets with varying numbers of alternatives by using a within-subjects preferential grocery shopping task. …

S-Equol: A Novel Therapeutic For Hiv-1 Induced Gut Dysbiosis, Mason T. Rodriguez

Theses and Dissertations

HIV-1 infection affects approximately 38 million people around the world. The advent of cART has greatly improved the quality of life of infected individuals; however, roughly 50% of these individuals will still experience HIV-1 associated neurocognitive disorders (HAND). Additionally, the gut microbiome has been reported to be dysbiotic in HIV-1 infected individuals, regardless of adherence to cART. Current research has pointed to the gut-brain-microbiota axis as a potential target to treat both cognitive deficits and microbial changes. The present study investigated S-equol (SE) as a potential therapeutic for HAND by modulating the gut microbiome. The study included 21 HIV-1 Tg …

Material World: The Effects Of Meditation Content On Materialistic Values, Azalia White, Katie Young, Hannah Wright, Nicole Walheim, Samantha Urban

[Archive] Belmont University Research Symposium (BURS)

In the twenty-first century, Western cultures are highly materialistic and defined by consumeristic goals to garner as much “stuff” as possible (Berger, 2015). This constant pursuit has demonstrable adverse effects on personal and social well being (Bahl et al., 2016; Wang, et al., 2017), while overconsumption also has devastating impacts on the global environment. Previous studies found a negative relationship between levels of mindfulness and levels of materialism (Nagpaul & Pang, 2015; Watson, 2019), indicating the potential for mindfulness to combat otherwise materialistic behaviors. Furthermore, previous research demonstrated gratitude interventions led to lower scores on materialism (Chaplin, et al., 2018), …

Educational Intervention Program For Young Voters: Improving Political Knowledge And Voting Behavior In The 2020 Simultaneous Local Elections, Muhammad Abdan Shadiqi, Gusti Ernawati, Rima Hariati, Khaerullah Fadhli Hasan Arasy, Noor I’Anah, Wita Al Istiqomah, Ulfiyah Nanda Firman, Neka Erlyani

Jurnal Politik

Young voters' low level of political knowledge, which impacts political participation, is still a phenomenon today. The influence of political knowledge on young voters' behavior is still being debated, and there is little empirical evidence, especially regarding political knowledge and voting behavior enhanced through specific educational programs. Therefore, an effective education program is needed to increase political knowledge and the desire of young voters to participate in general elections. This study aims to determine the effectiveness of educational programs in increasing political knowledge and shaping voting behavior among young voters in South Kalimantan Local Elections (Pilkada). We used a quasi-experimental …

The Impact Of Mindfulness Practices In Teachers, Shawn M. Martin Hettinga

ATU Theses and Dissertations 2021 - Present

Mindfulness training has been identified as a promising means for cultivating social and emotional competencies and reducing stress. The purpose of the quantitative pre-post study using convenience sampling of educators in a rural K-12 in the Arkansas River Valley was to examine whether teachers’ participation in mindfulness activities were associated with changes in levels of stress, anxiety, depression, and job satisfaction. The study used the Depression, Anxiety, and Stress Scale (DASS-21) and the Job Satisfaction Survey (JSS) and measured the responses from novice (0-3 years) and experienced (4+ years) teachers. The findings revealed that there was no difference between the …

Evaluation Of Hippocampal Allostatic Load-Associated Factors In Animal Models Of Post-Traumatic Stress Disorder: Relevance To Human Ptsd, Dennis Parker Kelley

LSU Doctoral Dissertations

Post-traumatic stress disorder (PTSD) is associated with elevated allostatic load, nearly double the risk for metabolic syndrome, reduced hippocampal volume, and contextual memory processing deficits. Emerging evidence suggests that these stress effects may predispose individuals to the development of PTSD, and there is a known relationship between chronic stress and metabolic dysfunction. In this work, we utilized two rat models of PTSD to explore these connections. We used an acute predator odor stressor to investigate the relationship between PTSD-like behaviors and mitochondrial dysfunction in the hippocampus of rats, and we observed that conditioned place avoidance was associated with reduced mitochondrial …

Healing Racial Injustice With Mindfulness Research, Training, & Practice, Danielle "Danae" Laura

Mindfulness Studies Theses

This thesis offers a collection of authors and studies in support of improved research, training, and practice connecting mindfulness with racial justice through intergroup applications. The paper identifies barriers at work (e.g., colorblindness, spiritual bypass, white fragility, and implicit bias) in contemplative science, Western Buddhist communities, and secular mindfulness centers, which block the sizeable contributions possible in studying the intergroup application of mindfulness practice—specifically Lovingkindness Meditation, among others—when used as an intervention with anti-racist aims. Through secondary qualitative research, I reviewed six key works from Black authors on mindfulness and race, as well as six sample studies on the prosocial …

Unresolved Issues Of Behavioral Analysis In Invertebrates, Charles I. Abramson, Paco Calvo

Animal Sentience

Crump et al. (2022) provide a framework for determining the presence of sentience in organisms. Their target article is interesting and thought-provoking, but it does not consider the many unresolved issues related to behavioral analysis – especially when it concerns invertebrates. We feel that no real progress can be made until such fundamental issues as the need for a consistent definition of conditioning phenomena, the lack of a generally accepted behavioral taxonomy, and the use of cognitive terms to explain invertebrate behavior are examined critically.

Development And Testing Of Remote Facilitation Of Prevent-Teach-Reinforce For Families To Address Challenging Behavior In Young Children (Ptr-F:R), Abby Hodges

Electronic Theses and Dissertations

As children advance through developmental stages, they often present behavioral difficulties such as tantrums, lack of cooperation, and aggression. For some children, behaviors are serious enough that they interfere with the child’s ability to engage in positive relationships, participate in necessary routines, and learn new skills, warranting behavioral intervention (Dunlap et al., 2017). Being responsive to the needs of the family and appreciation for the central role that they play is crucial to the success of behavioral interventions and the maintenance of positive outcomes (Bailey, 2013; Campbell, 1995), thus, their input should be at the center of all recommendations and …

The Impacts Of Learning 2 Breathe On Rumination, Adessa Flack

West Chester University Doctoral Projects

The present study examined the impact of Learning2Breathe (L2B), a mindfulness-based stress reduction program developed for use with adolescents on rumination. The program was applied to rumination in college-age men and women. Our experiment utilized a quasi-experimental design. The sample consisted of 50 undergraduate students that were placed in either the experimental or control group. Data was collected pretest and posttest through a variety of measures including the Rumination Reflection Questionnaire (RRQ) which consisted of a rumination and reflection subscale, and the Mindfulness Attention Awareness Scale (MAAS). A two-way mixed ANOVA design was used to analyze data. There was no …

Modeling Document Classification To Automate Mental Health Diagnosis, William M. Tadlock

EWU Masters Thesis Collection

The objective of this study is to determine if diagnosis documents can be used with document classification to automatically diagnose mental health conditions. Document classification allows text documents to be analyzed and organized into their appropriate classes based on the features and words presented in the text. One application of this is within the medical field to automatically classify different patient diagnosis based on medical or patient notes. This research applied mental health diagnosis documents to automatically diagnose a group of patients with a mental health condition based on text-based survey data. This classification was approached through several feature engineering …

Perceptions Of Female Gender Norm Violations: The Case Of Occupation And Body Hair, Kacie M. Kinkade

Master's Theses and Doctoral Dissertations

Many studies have looked at perceptions or attitudes toward women who violate a single type of gender norm but not the effect of multiple gender norm violations. The purpose of this study was to examine the perception and perceived success of a female who violated either body hair norms and/or occupational norms as part of her online dating profile. Two hundred eighty participants were asked to read one of four online dating profiles where the occupation was either kindergarten teacher or mechanic (e.g., occupational norm maintained or violated) and shaving products were either utilized or not utilized (e.g., body hair …

The Program To Reduce Implicit Bias In Carroll Hospital Center Using The Implicit Association Test, Katherine E. Traynor

Capstone Showcase

Natural brain processes make all individuals susceptible to unconscious bias; however, stressful, fearful, or anger-evoking situations as well as the negative influence of media and social surroundings increase the risk of holding obstructive bias, and there is a greater risk of being negatively impacted by this phenomenon when belonging to a minority population (Rose & Flores, 2020). As a result, high rates of infant mortality (10.2 deaths per 1,000 live births for the Non-Hispanic Black population compared to 4.1 in the White population) and cardiovascular related diseases (190.0 cases per 1,000 in the Non-Hispanic Black population compared to 161.3 in …

Cross-Group Friendships And Skin Tone Perceptions, Jhenifa Parker

EWU Masters Thesis Collection

George Allport (1954) coined the term contact hypothesis to explain the relationship between intragroup friendships/interactions and perceptions toward that group. Allport’s hypothesis had been scrutinized as an intervention for reducing prejudices and biases against groups who collectively experience discrimination. This theory was mainly tested in terms of cross-group friendships between individuals of a different ethnicity, racial group, physical ability, and so on; however, very little research has explored this hypothesis in the context of skin tone perceptions. Colorism has had an historical and pervasive impact on individuals categorized as racial/ethnic minorities. This study attempted to bridge the gaps in research …

The Relationship Between Social Media Use And Depression And Anxiety Symptoms During Covid-19, Tene'sha L. Crews, Christina Sheerin

Undergraduate Research Posters

The rise of the coronavirus (COVID-19) pandemic has caused a global surge in exposure to disaster and crisis-related media. Increases in poor mental health outcomes such as anxiety and depression, are associated with increased exposure to such media content (Abbas et al., 2021; Riehm et al., 2020; Zhao & Zhou, 2020). In recent years, social media has become one of the most widely used sources for news; approximately 48% of adult Americans receive their news from social media (Pew Research Center, 2021). During the COVID-19 pandemic, there has been an increase in social media use due to social distancing and …

Covid-19 Vaccine Related Anxiety Partially Mediates The Association Between Covid-19 Related Anxiety And Student Adjustment To College During The Pandemic, Hanh Nguyen

Dissertations and Theses

The COVID-19 pandemic caused severe disruptions to the education of millions of college students, who were forced to adapt to sudden changes in living and learning environments. In this study, we sought to investigate two different dimensions of anxiety that were specific to the pandemic – COVID-19 related anxiety and COVID-19 vaccine anxiety – hoping to pinpoint the relationship between these two variables and students’ ability to adapt to college. Specifically, using cross sectional survey data during three semester waves (Spring 2021, Fall 2021, and Spring 2022) we hypothesized (1) a decreasing trend across time in both COVID-19 related anxiety …

The Effect Of Magnitude And Probability On Plea Bargain Decision-Making, Megan L. Small

College of Graduate Studies: Theses & Dissertations

Decision-making is studied in various aspects of life and can be especially vital in the context of the criminal justice system, such as plea bargains. Previous research in this area used a less commonly used task (fill-in-the-blank) in addition to a student sample (Falligant & Pence, 2019). The current study uses probability discounting to study the choice between accepting a plea bargain for a shorter incarceration sentence or risking a trial with a longer sentence on a sample of adults with experience in the criminal justice system. Three sentence durations, or magnitudes, were used (1 year, 5 years, and 25 …

Social Media Engagement With Transgender Fertility Content, Kajal Verma, Benette K. Sagun, Melody Rasouli, Cindy M. Duke

Department of Obstetrics & Gynecology Faculty Research

Objective: To identify transgender fertility content with the highest online engagement on social media, determine its accuracy and quality, and see how this has changed over a 2-year period. Design: BuzzSumo, a content research tool, was used to identify the top 10 article links related to transgender fertility most interacted with on the social media platforms of Facebook, Twitter, Pinterest, and Reddit. We compared article links from June 2019 to June 2020 and from June 2020 to June 2021. The articles were categorized as accurate or misleading based on the references cited and current research. A qualitative analysis was performed …

Data Quality And Study Compliance Among College Students Across 2 Recruitment Sources: Two Study Investigation, Abby L. Braitman, Megan Strowger, Jennifer L. Shipley, Jordan Ortman, Rachel I. Macintyre, Elizabeth A. Bauer

Psychology Faculty Publications

Background: Models of satisficing suggest that study participants may not fully process survey items and provide accurate responses when survey burden is higher and when participant motivation is lower. Participants who do not fully process survey instructions can reduce a study’s power and hinder generalizability. Common concerns among researchers using self-report measures are data quality and participant compliance. Similarly, attrition can hurt the power and generalizability of a study.

Objective: Given that college students comprise most samples in psychological studies, especially examinations of student issues and psychological health, it is critical to understand how college student recruitment sources impact data …

Role Of Prior Knowledge In Timing Of Computer-Generated Feedback, Julie Faye Shirah

Theses and Dissertations--Psychology

Although often helpful, feedback sometimes has neutral or negative effects on learning (Hattie & Timperley, 2007; Kluger & DeNisi, 1996). For example, Fyfe and colleagues have found that the effects of feedback timing are moderated by students’ prior knowledge such that feedback has been useful for students with low prior knowledge, but has mixed effects on students with high prior knowledge (e.g., Fyfe et al., 2012; Fyfe, 2016). In this study, I extended Fyfe’s work by re-conceptualizing prior knowledge as knowledge of more familiar foundational concepts a learner brings to a learning task (Sidney & Alibali, 2017), which can be …

Click-Enter-Send: The Relationship Experiences Of People Who Are Blind Or Visually Impaired In Text-Based Workspaces, Kelly Bleach

Antioch University Dissertations & Theses

Companies have increasingly turned to text-based communications to recruit, hire, and manage a distributed remote workforce. For people who are blind or visually impaired, this movement presents both challenges and opportunities for attaining and retaining employment. Does the potential isolation of telework have a negative effect on workplace relationships for people who are blind or visually impaired? Does participation in text-based workspaces mitigate stereotypes and stigmatization experienced by people with visible disabilities? Using a constructivist grounded theory framework, this study explored how people who are blind or visually impaired experience relationships in text-based workspaces. Building and maintaining social connections and …

The Effects Of Venlafaxine And Voluntary Exercise On Chronic Unpredictable Stress Induced Anxiety, Marly Mcgowan

Senior Independent Study Theses

Anxiety disorders can impair cognition and emotional control, particularly in the face of novel situations, which is concerning due to the high prevalence of such diagnoses. Exposure to unpredictable chronic stress can provide a way to induce anxiety-like behaviors in rodents by disrupting the stress response systems, including the HPA axis and autonomic nervous system. Pharmacological treatments, including SNRIs like venlafaxine, and voluntary exercise are both anxiolytic treatments that can alleviate the impacts of chronic stress. Using unpredictable chronic stress to mimic the human condition, and exposure to venlafaxine and exercise to mitigate the stress, the open field and elevated …

A Monte Carlo Simulation Of Rat Choice Behavior With Interdependent Outcomes, Michelle A. Frankot

Graduate Theses, Dissertations, and Problem Reports (ETD)

Preclinical behavioral neuroscience often uses choice paradigms to capture psychiatric symptoms. In particular, the subfield of operant research produces nested datasets with many discrete choices in a session. The standard analytic practice is to aggregate choice into a continuous variable and analyze using ANOVA or linear regression. However, choice data often have multiple interdependent outcomes of interest, violating an assumption of general linear models. The aim of the current study was to quantify the accuracy of linear mixed-effects regression (LMER) for analyzing data from a 4-choice operant task called the Rodent Gambling Task (RGT), which measures decision-making in the context …

Pushing It To The Limit: Determining Asian Elephant (Elephas Maximus) Olfactory Sensitivity And Discrimination Through A Behavioral Choice Task, Matthew S. Rudolph

Theses and Dissertations

Elephants have shown remarkable olfactory capabilities. Their sense of smell impacts their foraging choices, behavior, and ultimately, survival. Being able to detect a target odor can allow elephants to locate specific resources, identify threats, and find receptive conspecifics. Previous studies have shown that elephants can consistently detect target odors, but have not identified the limits of this detection. Thus, to investigate the extent of elephants’ odor detection capabilities, we tested Asian elephants in a two-step odor discrimination task. First, we investigated whether elephants could detect odors at varying levels of dilution after a training procedure, and then whether they could …

Moderate Prenatal Ethanol Exposure, Sex, And Housing Modify Spatial Navigation Behavior And Hippocampal Cell Firing In Adult Rodents, Christy Magcalas

Psychology ETDs

Prenatal alcohol exposure (PAE) is associated with structural and physiological changes that impact the central nervous system and can result in persistent negative consequences in a broad spectrum of cognitive and behavioral domains including deficits in spatial learning and memory and behavioral flexibility. The current study focuses on examining the behavioral and mechanistic consequences of PAE, sex and housing. Rats were tested in the Morris Water Task where they were trained to navigate to a goal location and tested in a pool shift manipulation. There were no significant differences between PAE treatment, sex, or housing groups during training, but there …

The Combined Influences Of Race, Sexuality, And Gender On Perceptions Of Sexual Harassment, Courtney House

Honors Theses

The current research examines the perceptions of sexual harassment based on the influence of the victim’s gender, and the race of both the victim and the perpetrator, and perceiver’s feminist beliefs. By using vignettes (a brief description of an event), we manipulated a) the gender of the victim (man or woman), b) the race of the victim (POC or white), and c) the race of the perpetrator (POC or white). Our hypotheses were as follows: a) vignettes depicting same-sex harassment will be less in line with the definition of sexual harassment; b) vignettes portraying the victim as a woman of …

An Experimental Investigation Into The Impact Of Acute Stress On Alcohol Craving Through Implicit Coping Motives, Douglas J. Glenn

Psychology Theses & Dissertations

Drinking to cope with negative emotions is associated with many negative alcohol-related outcomes such as increased alcohol use, drinking-related problems, and alcohol use disorders. An acute stressor is one example of a stimulus leading to negative emotions that an individual may wish to avoid. Research has shown that acute stress positively relates to drinking. Specifically, previous experimental studies have shown that individuals exposed to a stressor drink more alcohol and have stronger urges to drink than those not exposed to a stressor. Thus, it may be that drinking to cope explains why people experience alcohol cravings after experiencing a stressor. …

The Role Of Ethnicity And Nativity In The Correspondence Between Subjective And Objective Measures Of In-Home Smoking, Vincent Berardi, Georgiana Bostean, Lydia Q. Ong, Britney S. Wong, Bradley N. Collins, Melbourne F. Hovell

Psychology Faculty Articles and Research

Studies are needed to understand the association between self-reported home smoking bans and objective measures of in-home smoking according to smokers’ ethnicity/nativity. Data came from a trial that used air particle monitors to reduce children’s secondhand smoke exposure in smokers’ households (N = 251). Linear regressions modeled (a) full home smoking bans by ethnicity/nativity, and (b) objectively measured in-home smoking events, predicted by main and interaction effects of self-reported home smoking bans and ethnicity/nativity. Among smokers reporting < a full ban, US-born and Foreign-born Latinos had fewer in-home smoking events than US-born Whites (p < 0.001). Participants who reported a full smoking ban had a similar frequency of smoking events regardless of ethnicity/nativity. Results indicate that self-reported home smoking bans can be used as a proxy for in-home smoking. Establishing smoking bans in the households of US-born White smokers has the largest impact on potential exposure compared to other ethnicity/nativity groups.

Homelessness, Dehumanization, And The Role Of Empathy, Christina Esker

Kean Quest

Dehumanization reflects a psychological process that denies individuals and groups the positive traits and attributes that make them human. Those experiencing homelessness are frequently dehumanized and perceived as social outcasts in American society. This study demonstrates the tendency of others to dehumanize individuals that are homeless and how increased empathy changes how this social outgroup is perceived. Results revealed that when exposed to information that humanizes a man experiencing homelessness, participants’ levels of empathy increased, and levels of disgust decreased. However, general attitudes and beliefs of homelessness were unchanged. The implications of increasing empathy levels for this social outgroup are …