Search Results

A regulatory role for N-acylethanolamine metabolism in Arabidopsis thaliana seeds and seedlings.

Description: N-Acylethanolamines (NAEs) are bioactive acylamides that are present in a wide range of organisms. Because NAE levels in seeds decline during imbibition similar to ABA, a physiological role was predicted for these metabolites in Arabidopsis thaliana seed germination and seedling development. There is also a corresponding increase of AtFAAH (fatty acid amide hydrolase), transcript levels and activity, which metabolizes NAE to ethanolamine and free fatty acids. Based on whole genome microarray studies it was determined that a number of up-regulated genes that were responsive to NAE were also ABA responsive. NAE induced gene expression in these ABA responsive genes without elevating endogenous levels of ABA. It was also determined that many of these NAE/ABA responsive genes were associated with an ABA induced secondary growth arrest, including ABI3. ABI3 is a transcription factor that regulates the transition from embryo to seedling growth, the analysis of transcript levels in NAE treated seedlings revealed a dose dependent, inverse relationship between ABI3 transcript levels and growth, high ABI3 transcript levels were associated with growth inhibition. Similar to ABA, NAE negatively regulated seedling growth within a narrow window of early seedling establishment. When seedlings are exposed to NAE or ABA within the window of sensitivity, the induction of genes normally associated with the ungerminated desiccation tolerant state resumed. The NAE tolerant FAAH overexpressor and the NAE sensitive FAAH knockout both had a NAE/ABA sensitive window similar to the wild type A. thaliana. The abi3-1 ABA insensitive mutant does not undergo growth arrest upon exposure to ABA, but NAE did induce growth arrest when treated within the sensitivity window. This evidence showed that although NAE functions within an ABA dependent pathway, it also functions in an ABA independent signaling pathway. The FAAH overexpressor is tolerant to NAE through its ability to quickly metabolize NAE from the …
Date: May 2009
Creator: Teaster, Neal D.
Partner: UNT Libraries

What's Real Anymore: A Comparison of World of Warcraft, SecondLife and Online Experiences

Description: The proliferation of the Internet and online-based social interactions has become an increasingly popular topic with communication scholars. The goal of this study was to explore how massively multi-player online role playing game (MMORPG) players make sense of and negotiate their online social interactions. This study (N = 292) examined how players of SecondLife and World of Warcraft evaluated their online relationships compared to their offline relationships and investigated how different levels of realism within different MMORPGs effected player's online experiences. The results indicated that players of SecondLife placed higher values of emotional closeness to their online relationships when compared to players of World of Warcraft and SecondLife was rated more real by its players than World of Warcraft. Results further indicated that players of SecondLife had higher levels of perceived online emotional closeness when compared to perceived offline emotional closeness. Implications of this study focus on developing a bottom up holistic profile of online game players as opposed to the current top down research model.
Date: May 2009
Creator: Tran, Chris
Partner: UNT Libraries

"It's never been this bad...ever": An analysis of K-12 teachers' standpoints related to parent-teacher communication.

Description: With the rise of "helicopter" parents within primary and secondary education, school officials nationwide have started to address how to manage parental involvement in the educational system, specifically with regard to parent-teacher communication. Beginning in the 1980s, school administrators actively implemented programs targeting increased parental involvement in K-12 public schools, though the use of contact and relationship building strategies, in order to substantiate school-teacher-parent communication and further parental influence over decision making processes. While administrators and parents may view parent-teacher interactions as productive, teachers' negative experiences with parents may lead to stress, burnout, and attrition. Researchers have indicated that between 20 and 50% of first through third year teachers leave the profession due to increased, long-term stress, unrealistic workload, and an overall feeling of decreased personal and professional fulfillment. Likewise, through educational reform initiatives to standardize curriculum and increase parental involvement within public schools, teachers' roles within the educational system have shifted from positions of power, to figureheads for the system. The purpose of this study is to examine public school K-12 teachers' standpoints as they relate to parent-teacher communication.
Date: May 2009
Creator: Thomas-Seltzer, Ashley
Partner: UNT Libraries

The Global Village Playground: A qualitative case study of designing an ARG as a capstone learning experience.

Description: The Global Village Playground (GVP) was a capstone learning experience designed to address institutional assessment needs while providing an integrated, contextualized, and authentic learning experience for students. In the GVP, students work on simulated and real-world problems as a design team tasked with developing an alternate reality game that makes an impact on the United Nations Millennium Development Goals. The purpose of this study was to evaluate the effectiveness of the design of the GVP as a capstone experience. The research design follows a qualitative case study approach to gather and analyze data collected from the instructors and students participating in the pilot implementation of the GVP. Results of the study show predominantly favorable reactions to various aspects of the course and its design. Students reported to have learned the most through interactions with peers and through applying and integrating knowledge in developing the alternate reality game that was the central problem scenario for the course. What students demonstrated to have learned included knowledge construction, social responsibility, open-mindedness, big picture thinking, and an understanding of their relationship to the larger society and world in which they live. Challenges that resulted from the design included the amount of necessary to build consensus and then develop an overarching game concept, the tension between guided and directed instruction, and the need to foster greater interdependence among students while encouraging them to become more self-directed.
Date: May 2009
Creator: Dondlinger, Mary Jo
Partner: UNT Libraries

Developing a Wildlife Tracking Extension for ArcGIS

Description: Wildlife tracking is an essential task to gain better understanding of the migration pattern and use of space of the wildlife. Advances in computer technology and global positioning systems (GPS) have lowered costs, reduced processing time, and improved accuracy for tracking wild animals. In this thesis, a wildlife tracking extension is developed for ArcGIS 9.x, which allows biologists and ecologists to effectively track, visualize and analyze the movement patterns of wild animals. The extension has four major components: (1) data import; (2) tracking; (3) spatial and temporal analysis; and (4) data export. Compared with existing software tools for wildlife tracking, the major features of the extension include: (1) wildlife tracking capabilities using a dynamic data layer supported by a file geodatabase with 1 TB storage limit; (2) spatial clustering of wildlife locations; (3) lacunarity analysis of one-dimensional individual animal trajectories and two-dimensional animal locations for better understanding of animal movement patterns; and (4) herds evolvement modeling and graphic representation. The application of the extension is demonstrated using simulated data, test data collected by a GPS collar, and a real dataset collected by ARGOS satellite telemetry for albatrosses in the Pacific Ocean.
Date: May 2009
Creator: Chen, Cai
Partner: UNT Libraries

No place to call home: Cultural homelessness, self-esteem and cross-cultural identities.

Description: The study examined relations between a cross-cultural geographically mobile childhood and adult cultural identity, attachment to cross-cultural identities (CCIs) and self-esteem. CCIs are loosely defined identities (e.g., third culture kids [TCKs], military brats, missionary kids) that describe some individuals' childhood cross-cultural experience. The 475 participants spent at least two years before age 18 in a culture different from their parents' and completed an online survey including childhood cross-cultural experiences, Cultural Homelessness Criteria, Rosenberg Self-esteem Scale, and Self Label Identity Measure (SLIM) that captured strength of affirmation, belonging and commitment to any CCI. Cultural homelessness (CH) was related to lower self-esteem; higher SLIM scores was related to higher self-esteem and lower CH. TCKs reported lower self-esteem than non-TCKs and older participants experienced less CH and higher self-esteem. SLIM scores buffered the CH-self-esteem relationship, whereas a TCK CCI and having more cross-culturally experienced social networks did not.
Date: May 2009
Creator: Hoersting, Raquel Carvalho
Partner: UNT Libraries

FPGA Implementation of Low Density Party Check Codes Decoder

Description: Reliable communication over the noisy channel has become one of the major concerns in the field of digital wireless communications. The low density parity check codes (LDPC) has gained lot of attention recently because of their excellent error-correcting capacity. It was first proposed by Robert G. Gallager in 1960. LDPC codes belong to the class of linear block codes. Near capacity performance is achievable on a large collection of data transmission and storage.In my thesis I have focused on hardware implementation of (3, 6) - regular LDPC codes. A fully parallel decoder will require too high complexity of hardware realization. Partly parallel decoder has the advantage of effective compromise between decoding throughput and high hardware complexity. The decoding of the codeword follows the belief propagation alias probability propagation algorithm in log domain. A 9216 bit, (3, 6) regular LDPC code with code rate ½ was implemented on FPGA targeting Xilinx Virtex 4 XC4VLX80 device with package FF1148. This decoder achieves a maximum throughput of 82 Mbps. The entire model was designed in VHDL in the Xilinx ISE 9.2 environment.
Date: August 2009
Creator: Vijayakumar, Suresh
Partner: UNT Libraries

What you teach makes a difference: Direct and collateral outcomes of an autism sibling intervention.

Description: Training siblings as change agents for children diagnosed with autism spectrum disorders (ASD) has been shown to be beneficial in teaching a sibling to teach their brother or sister. There are very few interventions, however, that explore the range of effects that targeting particular skills has on sibling interactions. The purpose of this study was to assess the direct and collateral effects of training behavioral teaching techniques to a typically developing sibling. Four experimental conditions were assessed: baseline, sibling teaching toy play, baseline, and sibling teaching social play. Across all conditions, measures of teaching components and siblings' interactions were assessed. Results of the assessment showed that the sibling was an effective change agent and that more favorable interaction and engagement occurred when social play skills were taught. The results of this sibling intervention and guidelines for condition changes are discussed in terms of sibling relationships.
Date: May 2009
Creator: Czekalski, Sara
Partner: UNT Libraries

Immediate and Subsequent Effects of Fixed-Time Delivery of Therapist Attention on Problem Behavior Maintained by Attention

Description: The purpose of the current study was to investigate the immediate and subsequent effects of fixed-time attention on problem behavior maintained by therapist attention utilizing a three-component multiple-schedule design. The treatment analysis indicated that fixed-time attention produced a significant immediate decrease in the frequency of physically disruptive behavior (PDB), represented by low frequencies of PDB in Component 2, as well as a continued subsequent effect, represented by lower frequencies of problem behavior in Component 3 when compared to Component 1. The possible behavioral mechanisms responsible for the observed suppression in Component 2 of the treatment analysis are discussed. Evidence of behavioral contrast was observed in Components 1 and 3 of the treatment analysis in conditions in which Component 2 contained a fixed-time schedule of stimulus delivery. In addition, limitations and future research are outlined.
Date: August 2009
Creator: Walker, Stephen Frank
Partner: UNT Libraries

The Assimilation of Baroque Elements in Ferruccio Busoni's Compositions as Exemplified by the Fantasia nach Bach and the Toccata

Description: Ferruccio Busoni (1866-1924) has a firmly established reputation as one of the giant pianists of his age, yet his compositions are largely neglected both in musicological circles and on the concert stage. A better understanding of his thought processes might lead to a greater appreciation of his art, and the acknowledgement of his reverence for the music of Bach is an important key to such an understanding. Busoni's Fantasia nach Bach and Toccata, although two decidedly dissimilar compositions in terms of purpose and conception, represent two manifestations of Busoni's respect for Bach, whether it be in the form of assimilating Bach's compositions into one of his own, or by creating an original work to the same mold as some of Bach's works.
Date: August 2009
Creator: Van Schalkwyk, Willem Andreas Stefanus
Partner: UNT Libraries

The Museum of Coming Apart

Description: This dissertation comprises two parts: Part I, which discusses use of second person pronoun in contemporary American poetry; and Part II, The Museum of Coming Apart, which is a collection of poems. As confessional verse became a dominant mode in American poetry in the late 1950s and early 60s, so too did the use of the first-person pronoun. Due in part to the excesses of later confessionalism, however, many contemporary poets hesitate to use first person for fear that their work might be read as autobiography. The poetry of the 1990s and early 2000s has thus been characterized by distance, dissociation, and fracture as poets attempt to remove themselves from the overtly emotional and intimate style of the confessionals. However, other contemporary poets have sought to straddle the line between the earnestness and linearity of confessionalism and the intellectually playful yet emotionally detached poetry of the moment. One method for striking this balance is to employ the second person pronoun. Because "you" in English is ambiguous, it allows the poet to toy with the level of distance in a poem and create evolving relationships between the speaker and reader. Through the analysis of poems by C. Dale Young, Paul Guest, Richard Hugo, Nick Flynn, Carrie St. George Comer, and Moira Egan, this essay examines five common ways second person is employed in contemporary American poetry-the use of "you" in reference to a specific individual, the epistolary form, the direct address to the reader, the imperative voice, and the use of "you" as a substitute for "I"-and the ways that the second-person pronoun allows these poems to take the best of both the confessional and dissociative modes.
Date: May 2009
Creator: Lee, Bethany Tyler
Partner: UNT Libraries

Stimuli-responsive microgels for self-assembled crystalline structures and controlled drug release.

Description: Tissue response to PNIPAM and HPC nanoparticles has been studied by implantation method. The results suggest that both PNIAPM and HPC nanoparticles possess good biocompatibility and they may serve as a good carrier for the applications of controlled delivery. Rheological properties of dispersions of IPN microgels composed of PNIPAM and PAAc have been studied. It is found that the IPN microgel dispersion can undergo a sol-gel transition at temperature above 33°C. In vivo drug release experiments suggest that the gelation procedure creates a diffusion barrier and thus leads to slow release. An emulsion method has been used to grow columnar crystals by mixing PNIPAM microgel dispersions with organic solvents. Effect of both temperature and microgel concentration on formation of columnar crystals has been studied. PNIPAM-co-NMA microgels have been used for the fabrication of crystalline hydrogel films by self-crosslinking microgels. The hydrogel film exhibits an iridescent. The thermally responsive properties and mechanical properties of this film have been studied. Melting temperature (Tm) of colloidal crystals self-assembled with PNIPAM-co-AAc microgels has been investigated as a function of pH, salt concentration and microgel concentration. It is revealed that Tm increases as pH value increases; Tm decreases with increase of salt concentration; Tm increases as microgel concentration increases. Phase behavior of PNIPAM-co-HEAc microgel dispersions has been investigated. It is observed that these microgel dispersions exhibit liquid, crystal, and glass phase. As microgel size increases, crystal phase shifts to low concentration range. As temperature increases, crystal phase shifts to high concentration ranges. These colloidal crystals can be stabilized by NaOH-induced gelation. Effect of NaOH concentration on formation of physical gelation has been investigated.
Date: August 2009
Creator: Zhou, Jun
Partner: UNT Libraries

A Performance Guide to Luigi Nono's Post-Prae-Ludium No. 1 "Per Donau"

Description: Luigi Nono's work Post-Prae-Ludium No.1 "per Donau" represents a model for the emerging genre of electroacoustic tuba music. It is important to preserve this electroacoustic work because of its value to the tuba literature. Not only is it one of the first electroacoustic works for the tuba, but it also was composed by a man who is highly regarded in the field of music composition. Its preservation will be difficult because of the rapid advancement in technology. Within the last three decades of existence, the technology has evolved three times. An examination of the performance practice in Post-Prae-Ludium was undertaken to understand the demand on the performer required to play this work. This study will look at both non-traditional performance practices, as well as an inherent problem of how the advancement of technology can actually threaten the survival of a work dependent upon a specific version of electronic technology. Nono worked in collaboration with Giancarlo Schiaffini to compose a work for tuba and live electronics. Correspondence with Schiaffini has provided his thoughts on the collaboration of Post-Prae-Ludium with Nono and given a better understanding of how to perform the work. Technology will change, and these current adaptations of Post-Prae-Ludium may not be valid in one or two decades. However, with the description and instruction given by Nono and Schiaffini, in addition to recordings made of Post-Prae-Ludium, there is a record from which to reproduce this work. This study provides a source allowing performers to reproduce this work, thereby preserving it for future performers.
Date: August 2009
Creator: Tignor, Scott Edward
Partner: UNT Libraries

The Effects of PECS Training on Symbolic Matching Skills in Learners with Autism

Description: This study evaluated whether picture exchange communication system (PECS) training would result in the development of conditional relations among corresponding pictures, objects (reinforcers) and spoken words used in PECS training with learners with developmental disabilities. Three participants with autism and mental retardation were trained to use PECS. Match-to-sample procedures were used to assess all possible conditional relations among stimuli before, during, and after PECS training. None of the three participants in this study acquired conditional discriminations involving the pictures, reinforcers, and spoken words used in their PECS training.
Date: May 2009
Creator: Cranmer, Elizabeth
Partner: UNT Libraries

Increasing glottal closure in an untrained male chorus by integrating historical, scientific, and clinical practice into choral voice building exercises

Description: An examination of the historical treatises of Manuel Garcia II and Giambattista Mancini, scientific studies pertaining to glottal closure, and Vocal Function Exercises used in clinical speech pathology led to an exploratory study that attempted to increase the glottal closure in an untrained university male chorus using only choral voice building exercises. The exploratory study used a single group, pre-test post-test design, and data was recorded using audio recordings of the entire chorus as well as electroglottograph measurements of individual subjects. The data show an increase in glottal closure as measured by closed quotient values, and an increase in energy in the upper partials of the recorded acoustic signal from the chorus.
Date: May 2009
Creator: Cottrell, Duane Coles
Partner: UNT Libraries

Metabolic Syndrome and Psychosocial Factors

Description: Metabolic syndrome is a constellation of risk factors, including abdominal obesity, hypertriglyceridemia, low HDL cholesterol, high blood pressure, and high fasting glucose, that commonly cluster together and can result in cardiovascular disease. The prevalence of metabolic syndrome and the components that comprise the syndrome vary by age and by racial/ethnic group. In addition, previous research has indicated that the risk factors contributing to metabolic syndrome may be exacerbated by exposure to perceived stress. This study utilized data from the 2002, 2004, and 2006 Health and Retirement Study (HRS) and National Health and Nutrition Examination Survey (NHANES) data sets. It was hypothesized that depression and anxiety (conceptualized as stress in this study) increase the risk of presenting with metabolic syndrome while social support decreases the risk of metabolic syndrome. While results of cross-sectional analysis do not indicate a significant relationship between depression and metabolic syndrome (t = -.84, ns), longitudinal analysis does indicate a significant relationship between depression and metabolic syndrome over time (t = -5.20, p <.001). However, anxiety is not significantly related to metabolic syndrome when the relationship is examined through cross-sectional analysis (t = -1.51, ns) and longitudinal analysis (&#967;² = 13.83, ns). Similarly, social support is not significantly related to metabolic syndrome when examined in cross-sectional (&#967;² = .63, ns) and longitudinal (t = 1.53, ns) analysis. Although level of stress is not significantly related to metabolic syndrome as a whole, there is a significant relationship between stress and both triglyceride level (t = -2.94, p = .003) and blood glucose level (t = -3.26, p = .001).
Date: August 2009
Creator: Tweedy, Maureen P.
Partner: UNT Libraries

A Tuscan Lawyer, His Farms and His Family: The Ledger of Andrea di Gherardo Casoli, 1387-1412

Description: This is a study of a ledger written by Andrea di Gherardo Casoli between the years 1387 and 1412. Andrea was a lawyer in the Tuscan city of Arezzo, shortly after the city lost its sovereignty to the expanding Florentine state. While Andrea associated his identity with his legal practice, he engaged in many other, diverse enterprises, such as wine making, livestock commerce, and agricultural management. This thesis systematically examines each major facet of Andrea's life, with a detailed assessment of his involvement in rural commerce. Andrea's actions revolved around a central theme of maintaining and expanding the fortunes, both financial and social, of the Casoli family.
Date: August 2009
Creator: Grover, Sean Thomas
Partner: UNT Libraries

Knowledge Management and Law Enforcement: An Examination of Knowledge Management Strategies of the Police Information System (POLNET) in the Turkish National Police

Description: This research study explores knowledge management (KM) in law enforcement, focusing on the POLNET system established by the Turkish National Police as a knowledge-sharing tool. This study employs a qualitative case study for exploratory and descriptive purposes. The qualitative data set came from semi-structured face-to-face and telephone interviews, as well as self-administered e-mail questionnaires. The sample was composed of police administrators who created POLNET, working under the Department of Information Technologies and the Department of Communication. A content analysis method is used to analyze the data. This study finds that law enforcement organizations' KM strategies have several differences from Handzic and Zhou's integrated KM model. Especially, organizational culture and structure of law enforcement agencies differently affect knowledge creation, conversion, retrieval, and sharing processes. Accordingly, this study offers a new model which is dynamic and suggests that outcomes always affect drivers.
Date: August 2009
Creator: Gultekin, Kubra
Partner: UNT Libraries

Cathedral of Hope: A History of Progressive Christianity, Civil Rights, and Gay Social Activism in Dallas, Texas, 1965 - 1992

Description: This abstract is for the thesis on the Cathedral of Hope (CoH). The CoH is currently the largest church in the world with a predominantly gay and lesbian congregation. This work tells the history of the church which is located in Dallas, Texas. The thesis employs over 48 sources to help tell the church's rich history which includes a progressive Christian philosophy, an important contribution to the fight for gay civil rights, and fine examples of courage through social activism. This work makes a contribution to gay history as well as civil rights history. It also adds to the cultural and social history which concentrates on the South and Southwestern regions of the United States.
Date: August 2009
Creator: Mims, Dennis Michael
Partner: UNT Libraries

Social Network Simulation and Mining Social Media to Advance Epidemiology

Description: Traditional Public Health decision-support can benefit from the Web and social media revolution. This dissertation presents approaches to mining social media benefiting public health epidemiology. Through discovery and analysis of trends in Influenza related blogs, a correlation to Centers for Disease Control and Prevention (CDC) influenza-like-illness patient reporting at sentinel health-care providers is verified. A second approach considers personal beliefs of vaccination in social media. A vaccine for human papillomavirus (HPV) was approved by the Food and Drug Administration in May 2006. The virus is present in nearly all cervical cancers and implicated in many throat and oral cancers. Results from automatic sentiment classification of HPV vaccination beliefs are presented which will enable more accurate prediction of the vaccine's population-level impact. Two epidemic models are introduced that embody the intimate social networks related to HPV transmission. Ultimately, aggregating these methodologies with epidemic and social network modeling facilitate effective development of strategies for targeted interventions.
Date: August 2009
Creator: Corley, Courtney David
Partner: UNT Libraries

Cardio-Respiratory Ontogeny and the Transition to Bimodal Respiration in an Air Breathing Fish: Morphological and Physiological Development in Normoxia and Hypoxia.

Description: As selection pressures exist for not only adults, but for every life history stage, it is important to understand how environmental factors shape developing animals. Despite the significance placed on aquatic hypoxia as a driving force in the evolution of air breathing, this is the first known study to examine the effects of hypoxia on cardio-respiratory ontogeny of an air breathing fish. Blue gouramis are obligatory air breathing fish that possess a labyrinth-like structure that serves as the air breathing organ. Gouramis were reared for up to 90 d in normoxia or hypoxia, and morphological and physiological development was observed. Hypoxic larvae had increased lamellar and labyrinth organ surface areas. Bradycardia and increased gill ventilation rates were observed when larvae from either rearing group were briefly exposed to hypoxia. Hypoxic larvae also showed a reduced heart rate and gill ventilation rate in the absence of a hypoxic stimulus, possibly indicative of a more comprehensive, long-term respiratory plasticity. The similarity of routine oxygen consumption between rearing groups suggests that metabolic demand did not change for hypoxic larvae, but that they were more efficient at oxygen acquisition. This is further supported by increased resistance time of hypoxic gouramis to extreme hypoxia. The onset of air breathing was between 20 and 25 d post-fertilization, and was not affected by either rearing or exposure environment. It may be that this behavior is associated with the inability of smaller larvae to successfully overcome water surface tension, rather than with the necessity of aerial respiration at this stage. Hypoxia is commonly experienced by most air breathing fishes, and studies of hypoxia-induced developmental effects may provide critical insights into the evolution of air breathing. The studies presented here provide novel data on the plasticity of cardio-respiratory development of an air breathing fish reared in hypoxia, and can …
Date: August 2009
Creator: Blank, Tara M.
Partner: UNT Libraries

Structural Equation Model of Variables Associated with Family Functioning among a Nationally Representative Sample of Families with a Child with Autism

Description: Previous research indicates that stressors experienced by a family, the perceived level of burden assigned by the family to the stressor, and the utilization of resources predict family functioning. The current study utilized a nationally representative sample of families of children with autistic disorder to determine if previously proposed models of family functioning accurately conceptualized family functioning within a representative sample. Structural equation modeling was utilized to test the double ABCX and the linear ACBX models of family functioning. With slight modifications, the double ABCX model was supported, thus indicating that pileup of stressors, perception of burden, and utilization of resources each have unique predictive ability for family functioning, with perception of burden demonstrating the highest amount of predictive ability. Results, implications, and limitations of the study are discussed.
Date: August 2009
Creator: Bezner, Stephanie K.
Partner: UNT Libraries

Saying Sorry: Conflict Atrocity and Political Apology

Description: This study proposes and tests a comprehensive theory detailing the motivations behind political apologies. A brief survey of the literature shows a field rich in case studies but lacking in rigorous scientific analysis. The theory presented proposes a three-level examination of political apology at the state, dyadic, and system levels and incorporates the effects of culture, conflict, and the nature of the international system into analysis. This study makes use of a new dataset recording the occurrence of political apologies for interstate conflict atrocities from 1900 to 2006. The results suggest that the existing literature, while rich, does not account for all the motivating factors behind apology. The results also confirm that political apology is a creation of the modern era and a result of the liberalization of the international system. In conclusion, paths for future research are suggested and the advent of a global "age of apology" is confirmed.
Date: August 2009
Creator: Chalkley, Marie Leone
Partner: UNT Libraries

A Comparison of Miranda Procedures: The Effects of Oral and Written Administrations on Miranda Comprehension

Description: Millions of custodial suspects waive their rights each year without the benefit of legal counsel. The question posed to psychologists in disputed Miranda waivers is whether this waiver decision was, knowing, intelligent, and voluntary. Mental health professionals must be aware of potential barriers to Miranda comprehension to provide expert opinions regarding a defendant's competency to waive rights. The current study examined how Miranda warning reading level, length, and method of administration affects Miranda comprehension. Recently arrested detainees at Grayson County Jail were administered oral and written Miranda warnings from the Miranda Statements Scale (MSS; Rogers, 2005) to measure their comprehension of the warnings. Surprisingly low levels of Miranda comprehension were found for most warnings. For all warnings at or above 8th grade, a substantial minority (27.1% - 39.6%) of defendants exhibited failed (i.e., < 50% understanding) Miranda comprehension. Regardless of other variables, oral administrations resulted in a substantially larger number of defendants with failed Miranda comprehension. Implications for public policy and clinical practice are discussed.
Date: August 2009
Creator: Blackwood, Hayley L.
Partner: UNT Libraries
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