Digital Commons Network^™

The Hormonal Correlates Of Stress And Posttraumatic Stress Disorder Symptoms In Female Veterans, Meghan Pierce

UNLV Theses, Dissertations, Professional Papers, and Capstones

With the increase of female veterans serving in the military, a better understanding of posttraumatic stress disorder is needed to provide comprehensive treatment. This study examines salivary cortisol in female veterans with PTSD, female veterans without PTSD, civilian females with PTSD and healthy controls. The Posttraumatic Stress and Beck Depression Inventory-II were used to assess posttraumatic stress and depressive symptoms. Saliva samples were collected at bedtime and awakening, as well as in response to the Trier Social Stress Test. Significant results were not found for diurnal cortisol levels [ F (3, 11)= .979, p < .05] or stress cortisol levels (F (3,12) = 1.140, p >.05). …

Development Of A Scale To Assess Avoidance Behavior Due To A Fear Of Falling: The Fear Of Falling Avoidance Behavior Questionnaire (Ffabq), Cortney Durand, D. Shalom Powell

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: A history of falls or imbalance may lead to a fear of falling which may lead to self-imposed avoidance of activity; this avoidance may stimulate a vicious cycle of deconditioning and subsequent falls.

Objective: The purpose of this study was to develop a questionnaire that would quantify avoidance behavior due to a fear of falling.

Design: This study consisted of two parts, questionnaire development and psychometric testing. Questionnaire development included an expert panel and 39 assisted living residents. Psychometric testing included 63 community dwelling subjects with various health conditions.

Methods: Questionnaire development included the evaluation …

Executive Function Profiles In Pediatric Traumatic Brain Injury, Erik Nelson Ringdahl

UNLV Theses, Dissertations, Professional Papers, and Capstones

Traumatic brain injury is a common cause of disability and death among children in the United States. Insult to the frontal and temporal lobes are frequent in closed head brain injury. Cognitive deficits in a variety of domains are common sequelae of brain trauma. In many cases, trauma to the frontal and temporal lobe regions engender prominent deficits in higher-order cognitive processing, memory, and attention.

Higher-order cognitive processing, or Executive Functions are the grouping of cognitive processes necessary for organization of thoughts and activities, attending to the activities, prioritizing tasks, managing time efficiently, and making decisions (Alvarez & Emory, 2006; …

The Effects Of Facial Expression On Out-Group Discrimination, Charles Brendan Clark

Dissertations

The current paper sought to test the hypothesis that the facial expression of smiling would mitigate the effects of out-group discrimination. Study 1 examined the influence of facial expression (smiling or frowning), gender (man or woman), and race (Black or White) on resource allocation decisions. Participants were shown arrays of facial photographs. The arrays all contained eight photographs and were counterbalanced to contain all combinations of the variables of interest (i.e., each group had a smiling man of each race, a smiling woman of each race, a frowning man of each race, and a frowning woman of each race). The …

Factors That Inhibit Or Enhance Maternal Coping With Stillbirth In Chhattisgarh, India, Lisa R. Roberts

Loma Linda University Electronic Theses, Dissertations & Projects

Background: Over half of the known stillbirths occur in four highly populated countries—India among them. While acknowledged as a significant public health issue in western societies, little is known about maternal coping with stillbirth in developing countries. The purpose of this mixed methods study is to explore how issues of gender and power, social support, coping efforts, and religious beliefs influence perinatal grief outcomes among poor women in rural Chhattisgarh, India.

Methods: In Phase 1 of this mixed methods study, grounded theory methods were used to explore perceptions regarding stillbirth. A de-identified medical records review of 536 deliveries at Christian …

Out Of The Mouths Of Babes: Vocal Production In Infant Siblings Of Children With Asd, Rhea Paul, Yael Fuerst, Gordon Ramsay, Kasia Chawarska, Ami Klin

Communication Disorders Faculty Publications

Background: Younger siblings of children with autism spectrum disorders (ASD) are at higher risk for acquiring these disorders than the general population. Language development is usually delayed in children with ASD. The present study examines the development of pre-speech vocal behavior in infants at risk for ASD due to the presence of an older sibling with the disorder. Methods: Infants at high risk (HR) for ASD and those at low risk, without a diagnosed sibling (LR), were seen at 6, 9, and 12 months as part of a larger prospective study of risk for ASD in infant siblings. Standard clinical …

Exploring Individual And Organizational Level Antecedents Of Experienced Workplace Incivility, Sara Ann Terlicki

Masters Theses and Doctoral Dissertations

The present research explored antecedents of experienced workplace incivility, specifically, the individual characteristics of agreeableness, negative affectivity, and emotional stability, and organizational (work) characteristics including social and contextual factors. Three competing models linking these antecedents to experienced workplace incivility were developed. One hundred seventy six participants were included in the final sample. Participants were recruited directly from companies and through an internet-based snowball sampling approach. Participants completed a questionnaire to assess experienced workplace incivility and dispositional individual and work characteristics. The results indicated that individual and work characteristics are important antecedents of experienced workplace incivility. However, work characteristics, specifically social …

The Structure Of Equine Personality, Rachel Etta Kristiansen

Dissertations

The current study was designed to investigate the structure of equine personality. Two personality questionnaires were replicated from previous studies and implemented simultaneously to test the theory that different questionnaires may extract different personality structures. Breed and sex differences were also hypothesized to be significantly different for some personality dimensions. A total of 827 horses were rated on a 90-item personality questionnaire. Participants were recruited online via email and completed the survey at their own convenience. An additional 121 respondents rated a horse that had already been rated; these results were used to calculate inter-rater reliability.

After data collection was …

Fit Measures Of Work-School Congruence And Individual Outcomes, Kimberly E. Kluesner

Honors Program Theses

Today, full-time college students are working part- or full-time jobs while attending classes. The demands of work, added to the already high demands of college, may result in negative effects on the individual. However, some aspects of working may lead to positive effects. Previous research has largely focused on the effects of job demands on school performance and other outcomes in adolescents. Current research is lacking in studying the effects of working on college students. The purpose of this thesis project was to research workschool congruence (similarities between aspects of a student's college studies and aspects of their employment), and …

Evaluating Parenting Practices As A Mediating Factor Between Marital Conflict And Children's Adjustment, Kristin Lee Tyson

Master's Theses

A wealth of research has illustrated that negative parenting practices mediate the relation between destructive marital conflict and externalizing problems in children; however, the study of constructive marital conflict and adjustment problems in children is less developed. Research has also suggested that psychological control is related to children's behavior; however, previous research is unclear as to the specific relationship between marital conflict and children's internalizing and externalizing behavior. To address this gap, the present study examined positive and negative parenting practices and psychological control as mediators of constructive and destructive marital conflict and children's internalizing and externalizing problems. Married mothers …

Physician Perceptions Of Risk Regarding Mood Disorders And Pharmacological Management During Pregnancy: What Is Current Practice?, Laura G. Hendon

Dissertations and Theses (Open Access)

Mood disorders are the most common form of mental illness and one of the leading causes of morbidity worldwide.  Major depressive disorder and bipolar disorder have a lifetime prevalence of 16.2% and 4.4%, respectively.  Women comprise a substantial proportion of this population, and an estimated 500,000 pregnancies each year involve women with a psychiatric condition.  Management with psychotropic medications is considered standard of care for most patients with mood disorders.  However, many of these medications are known human teratogens.  Because pregnant women with mood disorders face a high risk of relapse if unmanaged, the obstetrician faces a unique challenge in …

Ultrasound As An Aversive Stimulus For Use With Rats: A Novel Model Of Aversive Control, Brandon Norlund

Undergraduate Honors Capstone Projects

Negative reinforcers serve to maintain or increase behavior through the removal of an aversive stimulus. The primary method of studying negative reinforcement in non-humans has been through the use of electrical shock. While this method has proven to be reliable, many negative reinforcers that humans and non-humans encounter do not elicit tactile pain. Therefore, the purpose of this study was to explore a novel, non-human animal model of aversive control without the use of electrical shock as the negative reinforcer. A considerable amount of research has shown that various strains of rats find ultrasonic tones of certain frequencies and amplitudes …

Hand Preference For Coordinated Bimanual Actions In 777 Great Apes: Implications For The Evolution Of Handedness In Hominins, William D. Hopkins, Kimberley A. Phillips, A. Bania, S. E. Calcutt, M. Gardner, J. Russell, J. Schaeffer, E. V. Lonsdorf, S. R. Ross, S. J. Schapiro

Psychology Faculty Research

Whether or not nonhuman primates exhibit population-level handedness remains a topic of considerable scientific debate. Here, we examined handedness for coordinated bimanual actions in a sample of 777 great apes including chimpanzees, bonobos, gorillas, and orangutans. We found population-level right-handedness in chimpanzees, bonobos and gorillas, but left-handedness in orangutans. Directional biases in handedness were consistent across independent samples of apes within each genus. We suggest that, contrary to previous claims, population-level handedness is evident in great apes but differs among species as a result of ecological adaptations associated with posture and locomotion. We further suggest that historical views of nonhuman …

An Empirical Investigation Of Emotional Reactivity And Elevated Mental Contamination: A Comparison Of Sexual And Physical Assault, Christal Badour

Graduate Theses and Dissertations

Although evidence suggests that disgust and disgust-related phenomena such as mental contamination should be associated with the experience of sexual assault, there has been relatively little direct examination of this relation. Consequently, the primary aim of the current study was to conduct a multimodal assessment of disgust and mental contamination-based reactivity to an individualized script-driven imagery procedure. Participants included 27 sexually assaulted, 25 physically assaulted, and 30 non-traumatized control female adults. Subjective reactivity (i.e., ratings of disgust, anxiety, feelings of dirtiness, and urges to wash), physiological reactivity (i.e., electromyogram activity of the right levator labii superioris and medial frontalis regions) …

The Transition From 3-D To 2-D Visual Stimuli And Its Effect On Paired-Associate Learning, Amanda Beers

Mahurin Honors College Capstone Experience/Thesis Projects

A single experiment investigated the influence of varying dimensions of visual stimuli on the ability of academically gifted adolescents to recall paired-associations. Fifty-two participants were randomly assigned to one of four groups. Each group was asked to memorize the same set of 15 paired-word associations. The first group was presented with words only. The second group was presented with words and 2- dimensional (2-D) representations of each word. The third group was presented with words along with 3-dimensional (3-D) representations of the words. The fourth group was also presented words along with 3-D objects; however, this group was instructed to …

The Influence Of Family Structure And Transitions On Parenting, Income, Residential Mobility, And Substance Initiation In Early Adolescence: A Comparison Of Caucasian And African American Youth, Sally Mays

Theses and Dissertations

The effect of family structure on youth adjustment has received increasing attention as historical trends in single parenting, divorce, remarriage, and cohabitation with partners and extended family members have produced a diverse constellation of structures. African American youth are less likely than Caucasian youth to live in an “intact” family. Links between family structure and a variety of indices of youth adjustment have been established, although a relatively understudied outcome is that of substance initiation, despite its association with dependence and other negative sequelae. The dynamic effect of transitions has additionally been less studied than the static effect of structure. …

Discriminative Stimulus Properties Of 3-Substituent Rimonabant Analogs, D. Matthew Walentiny

Theses and Dissertations

Cannabinoid agonists (e.g., THC) dose-dependently decrease locomotor activity and body temperature and produce antinociception and catalepsy. Drugs that produce this tetrad of effects within a limited dose range are likely to function as CB1 receptor agonists. A structure activity relationship study from our laboratory investigating analogs of the CB1 antagonist rimonabant revealed that certain alterations in the 3-substituent of rimonabant’s pyrazole core conferred agonist-like properties in the tetrad. Interestingly, these effects were present in CB1 -/- mice, and were not reversed by rimonabant in wild-type mice. The present study evaluated two novel 3-substituent rimonabant analogs, O-6629 and O-6658 in the …

Developmental Trajectories Of Physical And Relational Aggression And Their Relation To Delinquency And Substance Use In Adolescence, Denicia Titchner

Theses and Dissertations

Although researchers studying adolescent aggression have proposed a conceptual distinction between physical and relational aggression, there is contradictory evidence regarding the degree to which they differ in their trajectories and relations to other outcomes. This study explored the importance of differentiating between these two forms of aggression based on comparisons of their trajectories, relation with each other, impact on delinquency and substance use, and gender differences. Data were collected as part of the Multisite Violence Prevention Project, conducted at 19 middle schools from four sites with a predominantly low-income, minority sample of students (N = 2,822). Growth curves showed significant …

Assessment Of Diabetes Regimen Disease Care In Youth With Type 1 Diabetes Via The Diabetes Behavior Rating Scale And The 24-Hour Diabetes Interview, Kathryn Maher

Theses and Dissertations

The psychometric properties of two measures of diabetes disease care, the Diabetes Behavior Rating Scale (DBRS) and the 24-hr Diabetes Interview (24-hr) were evaluated. The 24-hr is a widely used, structured interview while the DBRS is a self-administered, fixed-choice questionnaire. Both measures were administered to 250 youth with Type 1 Diabetes (aged 11–14 years) and their parents. Overall, both measures demonstrate adequate psychometric properties. The DBRS and the 24-hr demonstrated good incremental validity and low convergent validity with each adding significant additive value. Both measures demonstrated good concurrent validity with HbA1c. As expected, scores on the 24-hr demonstrated less than …

Hallowed Be Thy Name: The Effect Of Prayer On God-Schemata, Jennifer J. Healey

Senior Honors Theses

Religious ideologies and spiritual frameworks are first formed and later held together by the linking of encounters with the sacred, a spiritual Entity, ritualistic practices, and/or the recognition of spirituality in others or within one’s self. The concept of schemata, which are the mind’s processing frameworks wherein the individual connects information in a purposeful and meaningful way is fundamentally tied to this process of deliberating faith. According to the Christian faith, prayer molds this conceptualization of God. This study endeavors to establish the relationship between the subjective nature of schemata and its supernatural implications: how prayer influences one’s view of …

Debrazza’S Monkeys (Cercopithecus Neglectus) In A Mixed-Taxa Zoo Exhibit: Effects On The Behavior Of A Breeding Group Of Debrazza’S Monkeys After The Birth Of An Infant, Rachel Diamond

Psychology Honors Projects

Historically, zoos rarely feature mixed taxa exhibits including multiple primate species; the Minnesota Zoo opened such a unique four-species exhibit featuring Rock hyraxes, Red River hogs, Colobus monkeys, and DeBrazza’s monkeys in May, 2010. Because of potential problems associated with territoriality and aggression, primates in mixed-taxa exhibits are generally non-breeding. However, the DeBrazza’s monkeys at the MN Zoo are a breeding pair with a juvenile offspring. The intent of this study was to design an ethogram with the purpose of calculating the effects of a mixed taxa exhibit on the behavior of this breeding group, and to compare their behavior …

A Retrospective And Prospective Comparison Of Hungarian Children Who Have One Or Two Episodes Of Depression, Vanessa Panaite

USF Tampa Graduate Theses and Dissertations

Early onset depression is associated with high recurrence rates later in life. Recurrent depressive episodes during childhood may be particularly problematic, if additional episodes have a scarring effect that hinders healthy development. Distinguishing between first onsets and recurrences has been useful in understanding adult depression. This distinction has seldom been examined in pediatric depression, in part because it is difficult to enroll adequate samples of children with recurrent depression. We conducted archival analyses of carefully-diagnosed pediatric probands with depression first onset between ages of 4 and 12. Probands who reported one depressive episode (N = 435) were compared with probands …

The Evolution Of Social Pain: Understanding The Neural Network Of Social Ostracism Through Electroencephalography, Daniel M. Kern

Honors Projects

The lack of belonging or frequent exposure to social ostracism has maladaptive psychological and physical consequences. However, little is known about the mechanisms underlying the neural processes of social ostracism. Previously, Williams (2009) showed a decrease in theta power in the frontal lobe when female participants were ostracized in a virtual chat-room. Using male and female Illinois Wesleyan college students, this study manipulated two powerful social cues (biological sex and attractiveness level) to determine their effect on prefrontal brain activity in response to social ostracism in a virtual chat-room environment. Using EEG technology, frontal theta power (4-8Hz) was measured using …

Examining The Effects Of Ostracism On Neural And Behavioral Indices Of Cognitive Self-Regulation, Aaron B. Ball

Honors Projects

The impact of ostracism on a target individual produces a number of negative consequences, including deficits in cognitive functioning related to self-regulation and general cognition. While such effects have been acknowledged, there is a lack of literature regarding the effect of ostracism on action monitoring in particular. Action monitoring is a self-regulatory process in which participants ensure the accuracy of their responses to a task or situation, the authors hypothesized that it would be adversely affected by an experience of ostracism. The goal of the current study was to utilize event-related brain potentials to examine the relationship of these two …

Examination Of Social Responding In Children With Autism Spectrum Disorder, Micah Shields, Carlton Lyons

Symposium on Research and Creative Expression (SORCE)

Impairments in reciprocal pretend play are well documented in children with a diagnosis of Autism Spectrum Disorder (ASD). The play of children with this disorder is characterized by repetitive behaviors and lack of symbolic or social quality. This disorder is also characterized by deficits in spontaneous language, imitation, and social interaction. The effectiveness of many different behavioral teaching techniques has been examined in order to teach play skills to children with autism. Research supports the viability of these different interventions, but very few studies have directly compared the effectiveness of these different interventions. The current study provided a direct comparison …

Exploring Honor Code Perceptions, Moral Reasoning, And Attitudes Toward Learning: Establishing Concurrent Validity For The Honor Code Perceptions Scale, Ariel Johnson, Stephanie Kuipers

Symposium on Research and Creative Expression (SORCE)

This research project was conducted in order to examine student response to our recently devised instrument, the Honor Code Perceptions Scale. A past study investigated students’ perception of the Valparaiso University Honor Code along multiple dimensions, such as Honor Code effectiveness, tendency to engage in cheating behaviors, and toleration of others’ cheating behavior. The current study used additional instruments to measure students’ level of moral reasoning, academic motivation, and socially desirable responding. We assessed each of these variables using, respectively, the Defining Issues Test (DIT), the Patterns of Adaptive Learning Survey (PALS), and the Marlowe-Crowne Social Desirability Scale. Researchers examined …

Understanding Client Imagery In Art Therapy, Erica K.M. Curtis

Journal of Clinical Art Therapy

This study offers a preliminary investigation into the question: How do art therapists make meaning from viewing client-made art? Art therapy literature on making meaning from client art is reviewed. The Visual Thinking Strategies (VTS) model used in art education and museum education is also briefly discussed for its parallels to this study’s findings. An adapted form of grounded theory for data collection and analysis was used, leading to emergent themes that suggest that understanding client art requires more than analyzing content and aesthetic elements. More specifically, this inquiry offers the consideration that viewing client art is a dynamic practice …

Relations Between Violence Exposure, Threat Appraisal, And Coping Among Typologies Of Victimized Adolescents, Katherine Taylor

Theses and Dissertations

According to the transactional theory of stress and coping, threat appraisals influence coping and adjustment. Previous research has shown that threat appraisals mediate relations between violence exposure and adjustment, but few studies have examined links between threat appraisals and coping. The current study examined relations between violence exposure, threat appraisals, and coping among typologies of victimized adolescents. The sample included 159 predominately African American adolescents (M = 12.1). Path analyses were used to test whether threats of negative evaluation by self and others mediated relations between violence exposure and avoidance and positive reframing coping, respectively. Results did not indicate mediation …

The Influence Of Perceptual Accuracy On Willingness To Seek Help Among College Freshmen, Kathryn Conley

Theses and Dissertations

OBJECTIVE: The current study explored the applicability of the social norms approach to a new domain of study: psychological help-seeking. A number of questions that must be answered to determine whether the social norms model can be applied effectively to the help-seeking domain guided the study. METHOD: Data were collected from freshmen at five colleges and universities in the Mid-Atlantic region (N = 3021) during freshman orientation week. The study used a cross sectional design to examine personal attitudes and behaviors related to help-seeking as well as perceptions about others’ attitudes and behaviors related to help-seeking. RESULTS: Most participants reported …

Analysis Of Morris Water Maze Data With Bayesian Statistical Methods, Maxym V. Myroshnychenko, Anton Westveld, Jefferson Kinney

Festival of Communities: UG Symposium (Posters)

Neuroscientists commonly use a Morris Water Maze to assess learning in rodents. In his kind of a maze, the subjects learn to swim toward a platform hidden in opaque water as they orient themselves according to the cues on the walls. This protocol presents a challenge to statistical analysis, because an artificial cut-off must be set for those experimental subjects that do not reach the platform so as they do not drown from exhaustion. This fact leads to the data being right censored. In our experimental data, which compares learning in rodents that have chemically induced symptoms of schizophrenia to …