Students who complete homework generally do better on measures of academic performance such as quizzes, exams, and overall course grades. We examined the effects of contingent access to second quiz attempts on the percentage of undergraduate students completing homework to mastery. The study was conducted in an Introduction to Behavior Analysis course that, historically, had only 70% of students on average completing homework. An adapted multiple baseline design across sections was used for four sections of the course. Students could access a second quiz attempt contingent by meeting the following criteria: the student received a 16 out of 20 on the first quiz attempt or by meeting the mastery criterion of the homework (45 out of 50). We also examined the relation between homework accuracy and scores on first quiz attempts. Two sections did not show a difference in homework completion with and without the second quiz attempt contingency. One section showed more sensitivity toward the contingency once it was withdrawn, and one section never had the removal of the contingency and had the highest percentages of students completing their homework. When analyzing the relation of homework accuracy to the corresponding first quiz attempts, homework accuracy appeared to be related …

Religion and spirituality are vital aspects of many people’s lives both in the United States and across the globe. Although many constructs and measures exist to describe and assess the experience of pursuing the sacred, the complexity of religious and spiritual experience leads to mixed results in relation to well-being and psychopathological traits. However, in broad terms, the relationship appears positive. Over the past 30 years the need for more refined and useful approaches to the study of religious and spiritual behavior has been repeatedly acknowledged. Although authors wisely caution development of further measures without due cause, extant constructs and measures do not provide clear and consistent results for understanding the influence of one’s relationships to religion and spirituality upon behaviors of clinical interest. The present project drew from the functional contextual concept of psychological flexibility, which provides clarity to understanding the encouragement and maintenance of psychological well-being. A new construct of religious and psychological flexibility is explicated as a functional approach to understanding religious and spiritual behavior in a manner that is useful in research and clinical settings alike. The development and evaluation of the Measure of Religious and Spiritual Flexibility (MRSF) is described. The MRSF evidenced adequate internal …

This thesis explores the life and reign of Julian the Apostate the man who ruled over the Roman Empire from A.D. 361-363. The study of Julian the Apostate’s reign has historically been eclipsed due to his clash with Christianity. After the murder of his family in 337 by his Christian cousin Constantius, Julian was sent into exile. These emotional experiences would impact his view of the Christian religion for the remainder of his life. Julian did have conflict with the Christians but his main goal in the end was the revival of ancient paganism and the restoration of the Empire back to her glory. The purpose of this study is to trace the education and experiences that Julian had undergone and the effects they it had on his reign. Julian was able to have both a Christian and pagan education that would have a lifelong influence on his reign. Julian’s career was a short but significant one. Julian restored the cities of the empire and made beneficial reforms to the legal, educational, political and religious institutions throughout the Empire. The pagan historians praised him for his public services to the empire while the Christians have focused on his apostasy and …

Religion has a well-documented relationship with mental health benefits and has consistently demonstrated an impact on several specific mental health concerns, including suicide, generally finding various religious facets to be inversely associated with suicidal thoughts and behaviors. More specifically, religion has been found to be associated with suicide in a number of ways, including decreased acceptance of suicide, decreased likelihood of suicidal thoughts, decreased likelihood of suicidal attempts, fewer suicide attempts, lower relative risk of suicide, lower suicide rate, and increased reasons for living. Several studies have proposed potential mediators (e.g., social support, locus of control, and substance abuse) of the relationship between religion and mental health, usually in non-clinical samples. The current study sought to examine the association between religious attendance and suicidal ideation using archival data of a clinical sample collected from the University of North Texas Psychology Clinic. Results from this sample revealed no evidence of mediation, instead suggesting a direct effect of religious attendance on suicidal ideation. Two mediation models demonstrated the effects of external locus of control and social support on suicidal ideation. These models are discussed in terms of their directionality, considering the extant research on these associations. Findings of the current study have …

American agriculture in the twentieth century underwent immense transformations. The triumphs in agriculture are emblematic of post-war American progress and expansion but do not accurately depict the evolution of American agriculture throughout an entire century of agricultural depression and economic failure. Some characteristics of this evolution are unprecedented efficiency in terms of output per capita, rapid industrialization and mechanization, the gradual slip of agriculture's portion of GNP, and an exodus of millions of farmers from agriculture leading to fewer and larger farms. The purpose of this thesis is to provide an environmental history and political ecology of overproduction, which has lead to constant surpluses, federal price and subsidy intervention, and environmental concerns about sustainability and food safety. This project explores the political economy of output maximization during these years, roughly from WWI through the present, studying various environmental, economic, and social effects of overproduction and output maximization. The complex eco system of modern agriculture is heavily impacted by the political and economic systems in which it is intrinsically embedded, obfuscating hopes of food and agricultural reforms on many different levels. Overproduction and surplus are central to modern agriculture and to the food that has fueled American bodies for decades. Studying …

The current study replicated and extended previous research by examining empirically the direct and indirect influence of social pressure (to lose weight and diet), social body comparisons, internalization of the thin ideal, body dissatisfaction, self-esteem, and cardiorespiratory fitness on self-reported dietary restraint in a diverse sample of middle school boys (n = 663); Mage was 12.49 years (SD = .99). With IRB approval, parental consent, and child assent, during annual FITNESSGRAM testing, participants completed questionnaires that measured the study’s constructs. Cardiorespiratory fitness (CRF) was determined by the boys’ performance on the PACER running test. The proposed model was examined using structural equation modeling (SEM). Because measures demonstrated univariate and multivariate normality, the maximum likelihood procedure within EQS to examine the measurement and structural models was used. Fit was determined using a two-index procedure. Participants were randomly split into exploratory (Sample A - 331) and confirmatory (Sample B - 332) samples. For Sample A, the measurement and structural models fit the data well. The structural model was confirmed in Sample B, with the same paths being significant and nonsignficant. For both Sample A and Sample B, 35% of the Dietary Restraint variance was explained. These findings support a multifactorial approach to …

Training and empirically evaluating caregivers’ implementation of behavior management skills is a particularly challenging task in large residential contexts. A pyramidal training approach provides an efficient and effective way to conduct large-scale competency-based behavior skills training. The purpose of this project was to develop and evaluate a large-scale pyramidal staff training program for behavior management skills. One hundred nine caregivers and 11 behavior service professionals at a large, residential care facility participated in this project. Interobserver agreement was utilized to develop and refine measurements systems to detect caregiver acquisition of skills, behavior service professionals’ ability to score caregiver performance and behavior service professionals’ ability to deliver a specified portion of the curriculum. Pre- and post-test probes were conducted utilizing standard role play scenarios and checklists to evaluate caregiver acquisition of three specific behavior management skills. The results supported the following conclusions: first, interobserver agreement measures were useful to develop a reliable measurement system, to refine some curriculum elements, and to evaluate measurement conducted by behavior service professionals. Second, behavior skills training (BST) resulted in caregiver acquisition of all three behavior management techniques. Third, the pyramidal training approach was effective to teach behavior service professionals to deliver BST and accurately measure …

Estimates of healthy years of life lost due to mental illness are increasing, calling greater attention to the provision of effective psychotherapy services. Hypothesized to be the key mechanism through which competencies are developed in trainee clinicians and subsequent client outcomes, clinical supervision is deserving of greater attention. Drawing on a sample of supervisors, trainees, and clients from a training clinic, the present study sought to clarify the relational factors that could facilitate the asserted supervisor-client outcome link and to better understand if, and how, clinical supervisors influence client outcomes. With the exception of supervisor openness to experience, supervisor factors did not predict meaningful variance in client outcomes. Trainee extraversion and openness to experience predicted significant variance in leader-member exchange and supervisory working alliance. Dispositional trainee factors (e.g., personality) appear to impact trainee perceptions of the supervisory relationship. Implications for training and development are discussed, in addition to directions for future research.

This study explored the beliefs of pre-service secondary mathematics teachers about project-based learning (PBL), as they encountered a project-based learning high school where they implemented a project-based unit of instruction. A qualitative study was conducted with one undergraduate cohort in a higher education science, technology, engineering, and mathematics (STEM) national initiative that has 40 U.S. replication sites. Using teaching philosophy statements and focus group discussions, the beliefs of STEM pre-service secondary teachers are made visible. The findings from this study reveal a recurring theme: the process of how these pre-service teachers seemed to evolve and mature as teachers, from novice toward becoming an expert, as they asked themselves internal questions that are common to developing teachers. These pre-service STEM teachers experienced 1) internal questions about their own growth as a potential teacher, as evidenced through their verbal and written statements; 2) tension between PBL content and pedagogy; and 3) tension between practice and theory. The findings also infer that there are potential critical variables that may contribute to pre-service teachers’ beliefs. Those variables identified were the following: 1) the sequence of when the project-based instruction (PBI) course was taken; 2) time, as related to when the participant took the PBI …

This thesis examines the response to the AIDS crisis in Houston and Dallas, two cities in Texas with the most established gay communities highest number of AIDS incidences. Devoting particular attention to the struggles of the Texas’ gay men, this work analyzes the roadblocks to equal and compassionate care for AIDS, including access to affordable treatment, medical insurance, and the closure of the nation’s first AIDS hospital. In addition, this thesis describes the ways in which the peculiar nature of AIDS as an illness transformed the public perception of sickness and infection. This work contributes to the growing study of gay and lesbian history by exploring the transformative effects of AIDS on the gay community in Texas, a location often forgotten within the context of the AIDS epidemic.

Integrated Circuits (ICs) have a broad range of applications in healthcare, military, consumer electronics etc. The acronym VLSI stands for Very Large Scale Integration and is a process of making ICs by placing millions of transistors on a single chip. Because of advancements in VLSI design technologies, ICs are getting smaller, faster in speed and more efficient, making personal devices handy, and with more features. In this thesis work an interactive framework is designed in which the fundamental concepts of digital logic design and VLSI design such as logic gates, MOS transistors, combinational and sequential logic circuits, and memory are presented in a simple, interactive and user friendly way to create interest in students towards engineering fields, especially Electrical Engineering and Computer Engineering. Most of the concepts are explained in this framework by taking the examples which we see in our daily lives. Some of the critical design concerns such as power and performance are presented in an interactive way to make sure that students can understand these significant concepts in an easy and user friendly way.

Precisely positioned optical lenses are currently required for many highly repetitive mechanics and applications. Thus the need for micron-scale repetition between opto-mechanical units is evident, especially in industrial manufacturing and medical breakthroughs. In this thesis, a novel optical metrology system is proposed, designed, and built whose purpose is to precisely locate the center of a mechanical fixture and then to assemble a plano-convex optical lens into the located position of the fixture. Center location specifications up to ±3 µm decenter and ±0.001° tilting accuracy are required. Nine precisely positioned lenses and fixtures were built with eight units passing the requirements with a repetitive standard deviation of ±0.15 µm or less. The assembled units show satisfactory results.

This study investigated the beliefs of teachers at a particular elementary campus in North Texas during its first year of implementation of a social emotional curriculum regarding teaching social emotional skills and the influence of those beliefs on their classroom practices. The study drew from the works of Dewey and Bandura in the development of a framework for teacher decision making. A case study design incorporating multiple cases within the case study utilized a mixed-methods approach for data collection and analysis. Ten teachers volunteered and participated in the quantitative data collection, and four of those ten participated in the qualitative data collection through interviews and classroom observations. Data collection methods also included a demographic survey, a questionnaire on teacher beliefs about social emotional learning, and a self-ranking scale of practices related to teaching social emotional skills. Results indicated that although all participants believed social emotional skills instruction was part of their duties as teachers, their practices in teaching social emotional skills varied. Additionally, there was a mismatch between participants’ self-identified practices and the practices that were observed during the study. Administrative support for program implementation was high, but did not necessarily translate to effective practices during the first year of …

This quantitative study utilized secondary data from one large four-year, state university in the southwestern US. The relationship between registration time and academic performance was examined as well as the relationship between registration time and retention of first-time-in-college (FTIC) undergraduate students during their first semester of enrollment at the university. The differences between decided and undecided students were tested regarding students’ academic performance and retention of the same population. The study population for the fall 2011 semester included 6,739 freshmen, and the study population for the fall 2012 semester included 4,454 freshmen. Through multiple and logistic regression models, registration time was shown to statistically have a relationship with academic performance and retention (p < .05). Later registrants showed to have a negative relationship with GPA and were less likely to return the following spring semester. The explained variance (R2) for both measures of academic performance and retention along with descriptive statistics are also presented. A Mann Whitney U test and chi square test indicated that a statistically significant association between decided and undecided students exists for academic performance and retention (p < .05). Decided major students performed better as measured by semester GPA performance and were more likely to return …

Parenting self-efficacy refers to the ability of parents to have confidence in their abilities to effectively parent their children. Parenting self-efficacy can be divided into two types: (a) general parenting self-efficacy, which is defined as a parent’s overall sense of ability to effectively parent; and (b) task-specific parenting self-efficacy, which is defined as a parent’s confidence level to perform specific parenting tasks, such as teaching and nurturing (tested in this study). The study applied Bronfenbrenner’s bioecological theory to an analysis of (a) the effect of the HIPPY program in interaction with family and neighborhood variables on parenting self-efficacy and (b) the effect of the interaction of family and neighborhood variables on parenting self-efficacy. A group of 138 HIPPY mothers and a group of 76 comparison mothers who did not receive HIPPY services were surveyed. The sample was largely Hispanic. Results indicated HIPPY predicts task-specific parenting self-efficacy for teaching tasks, but not general parenting self-efficacy or task-specific efficacy for nurturance. Many family variables that reflected Hispanic family values were unique predictors of all three types of parenting self-efficacy, both in analyses involving interactions with HIPPY and with neighborhood variables. Neighborhood variables solely predicted general parenting self-efficacy. Moderation effects were found for …

Using a logistic regression model, this dissertation employed a macro level Gateway Provider Model to explore eight factors that may influence community health center HIV testing approach. The logistic regression model indicated that three variables related to community health center HIV testing approach. First, all else equal, the odds of offering routine HIV testing for community health centers that perceived their patients and community to be at average risk for HIV were 3.676 times the odds for those centers that perceived their patients and community to be at low or no risk for HIV. Further, the odds of offering routine HIV testing for community health centers that perceived their patients and community to be at high risk for HIV were 4.693 times the odds for those centers that perceived the community to be at low or no HIV risk. Second, all else equal, the odds of offering routine HIV testing for community health centers in which an HIV testing policy exists were 2.202 times the odds for those centers in which an HIV testing policy does not exist. Third, all else equal, the odds of offering routine HIV testing for community health centers that received funding specifically for HIV testing …

There is a growing body of research on psychopathic traits in non-clinical populations. This emerging research has documented the prevalence of psychopathic traits in the general population and demonstrated that psychopathy has a similar latent structure as well as similar correlates (e.g., violent behavior, alcohol abuse, and lower intelligence) to forensic/offender samples. Relatedly, there is strong evidence insecure attachment patterns in adulthood are associated with many personality disorders, including psychopathy, but only a few studies have examined the relationship between attachment and psychopathic traits in non-clinical samples (albeit, convenience samples of college students). Thus, two aims of the current study are to: 1) describe and explore the manifestation and expression of psychopathic traits in a large, community-based sample and 2) examine associations between adult attachment disturbances and psychopathic traits in diverse sociodemographic subgroups. Using a cross-sectional design, results showed mean-level psychopathy factor score differences existed only when considering single sociodemographic factors (e.g., age), not an interaction of those factors. Psychopathy factor profiles were also consistent across groups, with higher levels of lifestyle followed by interpersonal, affective, and antisocial traits reported. Regarding the second aim, findings indicated support for the positive association between disturbed attachment patterns in adult relationships and psychopathic …

Albert Einstein notably asserted that “It would be possible to describe everything scientifically, but it would make no sense; it would be without meaning, as if you described a Beethoven symphony as a variation of wave pressure.” Cast against the backdrop of Einstein’s assertion, the present research critically examines the enduring yet unresolved controversy regarding marketing as a science. Consider that the marketing discipline is nearing its first-century of inception, the Journal of Marketing is approaching its eighth decade of publication, and yet marketing academicians still debate the epistemology of marketing itself. Virtually all theories in marketing are adaptations of theory-development from other social science disciplines. The overarching research mission is to critically review a body of marketing theory using a meta-analytic approach to illuminate gaps in the epistemic foundations of marketing knowledge development. Grounded in the theory of composition, an entire body of Shelby D. Hunt's marketing literature – more than 130 effects encapsulating five of the most widely-cited marketing theoretical streams to date – is critically evaluated. Using scientometric analyses, the impact factors, citation indices, and the domain of references across the allied behavioral science literatures are empirically assessed. An epistemic inquiry to the marketing discipline is the …

A method was developed for extending a fine-scaled forest gap model to a watershed-scaled landscape, using the Eastern Cross Timbers ecoregion as a case study for the method. A topographic wetness index calculated from digital elevation data was used as a measure of hydrologic across the modeled landscape, and the gap model modified to have with a topographically-based hydrologic input parameter. The model was parameterized by terrain type units that were defined using combinations of USDA soil series and classes of the topographic wetness index. A number of issues regarding the sources, grid resolutions, and processing methods of the digital elevation data are addressed in this application of the topographic wetness index. Three different grid sizes, 5, 10, and 29 meter, from both LiDAR-derived and contour-derived elevation grids were used, and the grids were processed using both single-directional flow algorithm and bi-directional flow algorithm. The result of these different grids were compared and analyzed in context of their application in defining terrain types for the forest gap model. Refinements were made in the timescale of gap model’s weather model, converting it into a daily weather generator, in order to incorporate the effects of the new topographic/hydrologic input parameter. The precipitation …

Elizabeth Bishop (1911–1979), one of the foremost modern American poets, lived in Brasil during seventeen-odd years beginning in 1951. During this time she composed the poetry collection Questions of Travel, stand-alone poems, and fragments as well as prose pieces and translations. This study builds on the work of critics such as Brett Millier and Lorrie Goldensohn who have covered Bishop’s poetry during her Brasil years. However, most American critics have lacked expertise in both Brasilian culture and the Portuguese language that influenced Bishop’s poetry. Since 2000, in contrast, Brasilian critic Paulo Henriques Britto has explored issues of translating Bishop’s poetry into Portuguese, while Maria Lúcia Martins and Regina Przybycien have examined Bishop’s Brasil poems from a Brasilian perspective. However, American and Brasilian scholars have yet to recognize Bishop’s journey of acculturation as displayed through her poetry chronologically or the importance of her belated reception by Brasilian literary and popular culture. This study argues that Bishop’s Brasil poetry reveals her gradual transformation from a tourist outsider to a cultural insider through her encounters with Brasilian history, culture, language, and politics. It encompasses Bishop’s published and unpublished Brasil poetry, including drafts from the Elizabeth Bishop Papers at Vassar College. On a secondary …