Search Results

open access

Attention and Information Processing Variables in Hypothetically Psychosis-Prone College Students

Description: Considering the explanations of schizophrenia that presume schizophrenia spectrum disorders (e.g., schizotypal personality disorder, schizoaffective disorder, etc.) to be genetically related to schizophrenia, the purpose of this study was to investigate the attention and information processing abilities of individuals who have been identified as schizotypal or psychosis-prone (i.e., schizophrenia spectrum functioning in individuals who do not have schizophrenia). Research indicates that persons identified as psychosis-prone may show attention and information processing deficits similar to individuals with schizophrenia. The identification and description of individuals who later decompensate into schizophrenia would advance the understanding of schizophrenia and its causes. The Chapman's PER-MAG scale (Perceptual Aberration-Magical Ideation) was used to identify 35 hypothetically psychosis-prone college students (schizotypy group) and 42 normal college students (nonschizotypy group) out of the 806 volunteer subjects. Their attention and information processing abilities were measured by COGLAB (a multiparadigmatic cognitive test battery that represents a continuum of cognitive functions, from preattentional to attentional, to conceptual). Their social adjustment was measured by the Premorbid Adjustment Scale (PAS). The hypotheses of the study were that the hypothetically psychosis-prone subjects would perform poorer than controls on COGLAB measures and that COGLAB measures of a more molar nature would better predict social adjustment than would the more molecular tasks. The results of the study did not support the hypotheses as there were no significant differences between the schizotypy group and the nonschizotypy group and the measures of a more molar nature did not better predict social adjustment. Further research might consider increasing the sample size, applying more stringent cut-off criteria for the schizotypy group, and verifying the validity of using PER-MAG, COGLAB, and PAS with this population. Further research also needs to clarify the ways in which those identified as psychosis-prone process information like (or unlike) nonschizotypes and how their current social functioning …
Date: December 1995
Creator: Ottesen, James McBride
Partner: UNT Libraries
open access

The Effect of Relationship Support and Parenting Style on Externalizing and Internalizing Behaviors of Children with ADHD

Description: Influences between quality of intimate heterosexual relationships, parenting style, and externalizing and internalizing behavior problems of children with Attention-deficit Hyperactivity Disorder (ADHD) were examined in a sample of intact and single parent families. The perspective on marital quality was expanded to include an examination of intimate adult relationships within single parent households. Associations between the quality of custodial parents' serious dating and/or cohabiting relationships, parenting style and the behavior problems of children with ADHD were studied. Results from this study found tentative support for previous findings that family functioning may mediate the development of conduct disorders among children with ADHD.
Date: August 1995
Creator: Walker, Frances (Frances Ann)
Partner: UNT Libraries
open access

The Effectiveness of Speech Recognition as a User Interface for Computer-Based Training

Description: Some researchers are saying that natural language is probably one of the most promising interfaces for use in the long term for simplicity of learning. If this is true, then it follows that speech recognition would be ideal as the interface for computer-based training (CBT). While many speech recognition applications are being used as a means for a computer interface, these are usually confined to controlling the computer or causing the computer to control other devices. The user input or interface has been the recipient of a strong effort to improve the quality of the communication between man and machine and is proposed to be a dominant factor in determining user productivity, performance, and satisfaction. However, other researchers note that full natural interfaces with computers are still a long way from being the state-of-the art with technology. The focus of this study was to determine if the technology of speech recognition is an effective interface for an academic lesson presented via CBT. How does one determine if learning has been affected and how is this measured? Previous research has attempted quantify a learning effect when using a variety of interfaces. This dissertation summarizes previous studies using other interfaces and those using speech recognition. It attempted to apply a framework used to measure learning effectiveness in some of these studies to quantify the measurement of learning when speech recognition is used as the sole interface. The focus of the study was on cognitive processing which affects short-term memory and in-turn, the effect on original learning (OL). The methods and procedures applied in an experimental study were presented.
Date: August 1995
Creator: Creech, Wayne E. (Wayne Everette)
Partner: UNT Libraries
open access

Sufficient Conditions for Uniqueness of Positive Solutions and Non Existence of Sign Changing Solutions for Elliptic Dirichlet Problems

Description: In this paper we study the uniqueness of positive solutions as well as the non existence of sign changing solutions for Dirichlet problems of the form $$\eqalign{\Delta u + g(\lambda,\ u) &= 0\quad\rm in\ \Omega,\cr u &= 0\quad\rm on\ \partial\Omega,}$$where $\Delta$ is the Laplace operator, $\Omega$ is a region in $\IR\sp{N}$, and $\lambda>0$ is a real parameter. For the particular function $g(\lambda,\ u)=\vert u\vert\sp{p}u+\lambda$, where $p={4\over N-2}$, and $\Omega$ is the unit ball in $\IR\sp{N}$ for $N\ge3$, we show that there are no sign changing solutions for small $\lambda$ and also we show that there are no large sign changing solutions for $\lambda$ in a compact set. We also prove uniqueness of positive solutions for $\lambda$ large when $g(\lambda,\ u)=\lambda f(u)$, where f is an increasing, sublinear, concave function with f(0) $<$ 0, and the exterior boundary of $\Omega$ is convex. In establishing our results we use a number of methods from non-linear functional analysis such as rescaling arguments, methods of order, estimation near the boundary, and moving plane arguments.
Date: August 1995
Creator: Hassanpour, Mehran
Partner: UNT Libraries
open access

Development of Place-Value Numeration Concepts in Chinese Children: Ages 3 through 9

Description: This investigation examined Chinese children's development of place-value numeration concepts from ages 3 through 9, compared the development of place-value understanding of these Chinese children with that of American and Genevan children whose performances had been described in the literature, and examined the influence of adult assistance during Chinese children's performances on some of the place-value tasks.
Date: August 1995
Creator: Chang, Sy-Ning
Partner: UNT Libraries
open access

GABAᴀ Receptors in Rat Whisker Barrel Cortex: Effects of Sensory Deprivation

Description: The GABAergic system in adult sensory cortex is affected by sensory deprivation, but little is known about how this predominant inhibitory system is affected during ontogeny. The present study investigates developmental effects of whisker trimming on GABAa receptors in rat barrel cortex. Rats trimmed for 6 wk beginning at birth and adulthood showed similar decreases in [3H]muscimol binding in deprived relative to non-deprived barrels, suggesting absence of a critical period.
Date: August 1995
Creator: Salazar, Eduardo, 1962-
Partner: UNT Libraries
open access

Social Drama at Southwestern Baptist Theological Seminary : The Dilday Controversy

Description: This study examines the events surrounding the firing of Russell Dilday at Southwestern Baptist Theological Seminary as a social drama. The results suggest that, for application to post-industrial cultures, adaptations need to be made to Victor Turner's original method. The addition of Thomas Farrell's anticipation phase, identification of the breach with the transgression, and examination of unique facets of post-industrial cultures such as economic factors and the role of the media are recommended modifications. In light of these differences, the study concludes that the state of affairs at Southwestern is characteristic of schism in a post-industrial culture.
Date: December 1995
Creator: Drake, Webster F. (Webster Ford)
Partner: UNT Libraries
open access

Was Ist Silvia? Englanderin Oder Deutsche? Restoring the Orignial English Texts to Songs Schubert Set in Translation, a Lecture Recital, Together with Three Recitals of Selected Works of H. Purcell, G. F. Handel, W. A. Mozart, F. Schubert, J. Brahms, H. Wolf, F. Poulenc and Others

Description: Because of the lack of information concerning the success or failure of Schubert's bilingual edition and concerning the relationship between the English texts and Schubert's settings, most performers take the conservative route of performing both the songs from Lady of the Lake and the rest of Schubert's English song repertoire only with the German translations. Because of the desirability of performing this repertoire in English for English-speaking audiences, this study examines all of the English songs of Schubert to determine whether the original poems can be successfully substituted for the German translations. Editions of the settings that can be effectively performed with the English texts are included in the appendix, in order to make available editions which reflect Schubert's ambition to make his songs easily accessible to non-German-speaking audiences.
Date: May 1995
Creator: Bolthouse, Colleen R.
Partner: UNT Libraries
open access

Distorted Time Perception as an Underlying Factor of Psychosis Proneness and Dissociation

Description: Distortions in the perception of time historically have been associated with dissociation and psychosis in clinical populations. However, the relations among dissociation, psychosis, and time perception in sub-clinical populations have not been investigated. In the present study, college undergraduates scoring either normally or deviantly high on the Per-Mag were given a Dissociative Experiences Scale (DES) and a computerized time-estimation/production task. Participants scoring high on the Per-Mag obtained higher scores on the DES than participants scoring low on the Per- Mag. Per-Mag scores also correlated positively with DES scores across 608 total participants screened. The relation between dissociative and psychotic symptomatology is discussed considering dichotomous versus continuous conceptualizations of psychopathology. The effects of intelligence, social desirability, malingering, gender, and post-traumatic stress on the measures used are also discussed.
Date: August 1995
Creator: Koehler, Gregory C. (Gregory Charles)
Partner: UNT Libraries
open access

Upper and Lower Temperature Tolerances of Three Freshwater Game-Fish Species Exposed to Cycling Temperatures

Description: A total of 670 critical thermal maxima (CTMax) and minima (CTMin) were determined for three freshwater fishes acclimated to three constant temperatures and a diel regimen cycling between the lowest and highest acclimation temperatures. In all species temperature tolerance was directly related to acclimation temperature and slopes relating these variables indicate that acclimation temperature has a greater influence on tolerance of low rather than high temperatures. CTMax and CTMin values generated following exposure to 32 days of oscillating temperatures indicate that in general, fishes had temperature tolerance acclimation states consistent with the average temperature and not either the highest or lowest temperature of the diel cycle.
Date: August 1995
Creator: Currie, Rebecca J. (Rebecca Jean)
Partner: UNT Libraries
open access

Policies and Practices of University Presses in Texas

Description: The purposes of this study were: (a) to present a brief history of university press publishing in Texas, (b) to describe operating policies and practices of these presses, (c) to compare these policies and practices with commonly accepted principles of publishing policy, and (d) to provide a view of the future of university press publishing in Texas.
Date: May 1995
Creator: Caraway, Georgia Kemp, 1950-
Partner: UNT Libraries
open access

Heat Shock Proteins in Ascaris suum

Description: Ascaris suum were exposed to a number of stressors, including heavy metals and both high (40°C) and low (18°C) temperatures. The 70kD and 90kD heat shock proteins (HSPs) in the different A. suum tissues were analyzed by Western blot and quantitated by Macintosh Image Program.
Date: August 1995
Creator: Chao, Sheng-Hao
Partner: UNT Libraries
open access

The Influence of Relationship Quality and Preventability of Death on Perceptions of Funerals in Bereaved Adults

Description: Four hundred and thirty-eight participants who had lost a close friend or family in the last 2 years completed questionnaires regarding their experiences with the funeral. Results indicated individuals emotionally close to the deceased person reported higher levels of participation in funeral rituals and greater levels of bereavement adjustment. Those emotionally distant from the deceased person reported greater satisfaction with the funeral. Individuals who viewed the deceased person as a central figure in their lives had greater participation in the funeral. Those who viewed the deceased person as a peripheral figure had higher levels of bereavement adjustment. Additionally, those who viewed the death as unpreventable reported greater satisfaction with the funeral, and had higher levels of bereavement adjustment.
Date: August 1995
Creator: Pinkenburg, Lisa
Partner: UNT Libraries
open access

Parenting Stress and the Family Environment of Mothers Who Have Returned to College

Description: Stress plays a key role in our daily lives, influencing our emotional state, productivity, and health. One particular role in life, being a parent, has attracted significant attention in the research world in terms of the amount of stress parents experience in relation to different aspects of being parents. A life change that many parents, particularly mothers, are experiencing in increasing numbers is their return to college. This study compared reports of parenting stress and perceptions of the family environment between two groups of mothers. The first is a group of 32 mothers who were working 30 or more hours a week outside the home and were not enrolled in college while the second group consists of 31 mothers who were in college full-time and working less than 10 hours a week outside the home. All of the mothers were between the ages of 25 and 45 and had at least one child between the ages 5 and 12 years old. In both groups the mothers verified that their child(ren) was (were) without any diagnosis of an emotional, behavioral, or learning problem. A series of one-way multivariate analysis of variance (MANOVAs) were performed. Results indicated there were no significant group effects related to the overall parenting stress expressed by the mothers. A significant group effect was noted (F = 5.31;\ p < .05) in that the working mothers reported a greater level of perceived poor health than the mothers who were attending college full-time. In relation to the mothers' perception of their family environment, a significant group effect (F = 6.23;\ p < .05) was found indicating that the working mothers reported a greater emphasis on ethical and religious issues and values.
Date: December 1995
Creator: McCal, Kevin J.
Partner: UNT Libraries
open access

Strategic Reorientation in the Computer Software and Furniture Industries: a Hierarchical Regression Analysis

Description: Insufficient literature exists in the area of incremental and revolutionary change to explain and predict the convergence and reorientation phenomena happening in organizations. The process of strategic reorientation involves the internal organizational complexities of fast-paced (within two years) changes in competitive strategy as a necessary condition coupled with changes in at least two of organization structure, power distribution, and control systems. Antecedent forces believed to influence the discontinuous change process include industry sales turbulence, structural inertia/firm size, firm past financial performance, CEO turnover, top management team turnover, management team heterogeneity, management environmental awareness, and external attributions for negative financial performance. Punctuated equilibrium was the foundational theory for this study in which a strategic reorientation model published in Strategic Management Journal was reconstructed. The research question was: What seem to be the significant time-based antecedent forces or conditions that lead to strategic reorientation? The study used two hierarchical logit regression models to analyze data gathered from COMPUSTAT PC Industrial Data Base and Compact Disclosure (CD-ROM) over the years 1987-1993 from the turbulent computer software and stable furniture industries. Qualitative data were found in 10-K reports and President's Letters in Annual Reports filed with the SEC and available on Laserdisclosure. The sample, exclusive of 3 multivariate outliers, included 74 software firms and 43 furniture firms for a pooled total of 117 firms. When separate industries were analyzed using the first of the Systat logit hierarchical regressions, results showed no statistically significant effects. By contrast, when data were pooled, the second hierarchical logit regression model, which included industry turbulence and firm size, showed these one-tailed statistically significant results: strategic reorientation is positively affected by prior industry turbulence and CEO turnover, but is negatively affected by prior top management team turnover and the interaction between industry turbulence and external attributions for negative financial performance.
Date: August 1995
Creator: Gordon, Shelley S. (Shelley Sampson)
Partner: UNT Libraries
open access

A Laboratory Study of the Asiatic Clam (Corbicula fluminea Müller) as Influenced by Substrate, Food Source and Water Type

Description: Growth of Corbicula fluminea was monitored in the laboratory. Three experiments were conducted. Experiment I utilized three substrates and one food type. Experiment II utilized three substrates and two food types. Experiments I and II were conducted to determine if substrate type or food type effected growth. Experiment III used no substrates, one food type and was conducted to determine growth response to different types of water. Clams were maintained in three substrates: sand, gravel and clay. Clams were also maintained without substrate. Growth was monitored by measuring shell length (mm) and recording the weight (mg) of clams over a period of thirty days. At the end of the test period data were evaluated for normality and homogeneity.
Date: May 1995
Creator: Halbrook, Courtney (Courtney Ann)
Partner: UNT Libraries
open access

Interactions Between Texts, Illustrations, and Readers: The Empiricist, Imperialist Narratives and Polemics of Sir Arthur Conan Doyle

Description: While literary critics heretofore have subordinated Conan Doyle to more "canonical" writers, the author argues that his writings enrich our understanding of the ways in which Victorians and Edwardians constructed their identity as imperialists and that we therefore cannot afford to overlook Conan Doyle's work.
Date: December 1995
Creator: Favor, Lesli J.
Partner: UNT Libraries
open access

Parent Responses to the Birth and Rearing of a Child with Down Syndrome : The Application of Engel's 3-stage Theoretical Model of Grieving

Description: The purpose of this study was twofold: 1) To analyze the similarities and differences between parent responses to the birth and rearing of a child with Down syndrome and; 2) To document the characteristics of grieving described in Engel's 3-stage model of grieving. A questionnaire was used to assess responses from randomly chosen parent members of the Dallas Down Syndrome Guild. Qualitative data analysis was conducted, using the methodology of triangulation.
Date: August 1995
Creator: Smith, Jenette L.
Partner: UNT Libraries
open access

Diagnosing Learner Deficiencies in Algorithmic Reasoning

Description: It is hypothesized that useful diagnostic information can reside in the wrong answers of multiple-choice tests, and that properly designed distractors can yield indications of misinformation and missing information in algorithmic reasoning on the part of the test taker. In addition to summarizing the literature regarding diagnostic research as opposed to scoring research, this study proposes a methodology for analyzing test results and compares the findings with those from the research of Birenbaum and Tatsuoka and others. The proposed method identifies the conditions of misinformation and missing information, and it contains a statistical compensation for careless errors. Strengths and weaknesses of the method are explored, and suggestions for further research are offered.
Date: May 1995
Creator: Hubbard, George U.
Partner: UNT Libraries
open access

The Role of Workstation-Based Client/Server Systems in Changing Business Processes: a Multiple Case Study

Description: Although several studies question information technology's contribution to productivity, organizations continue to invest in client/server systems (CSSs) particularly as enablers of business process reengineering (BPR). These efforts may be wasted if they do not improve business processes. This study focused on business processes and investigated the role of workstation-based CSSs in changing business processes. A multiple case study of workstation-based CSS databases in three organizations was performed with the proposition that they moderate the relation between managerial action and changes within business processes. The research framework suggested that changes to business processes are achieved by reducing uncertainty. In order to measure change in business processes, this study categorized business process change into: (1) compressing sequential tasks across functions, (2) compressing tasks vertically within the managerial hierarchy, (3) eliminating slack resources, (4) reducing the distance between the point of decision and the point of information or eliminating intermediaries, (5) reconfiguring sequential processes to operate in parallel, and (6) linking parallel activities during the process. Data collected from questionnaires, interviews, and observations from three case studies were used to construct network diagrams, relationship matrices, reachability matrices, and task tables of business processes. The results of this research partially support the proposition that managerial action affects business process change by reducing uncertainty. This research suggests that changes in the use of workstation-based CSSs are related to changes in business processes. However, because ofthe small sample size, no finding was made regarding changes in the strength of that relationship. Therefore, within its limitations, this research (1) partially supports the proposition that CSSs moderate changes in business processes, (2) found that both favorable and unfavorable changes may result from using CSSs, (3) explains how business process change occurs, and (4) suggests new variables for measuring successful BPR.
Date: December 1995
Creator: Nik Hassan, Nik Rushdi
Partner: UNT Libraries
open access

Graduate Students' Perceptions of the Effectiveness of a Two-Way Audio/Video Distance Learning Session and of Its Effects on Graduate Students' Comfort Level

Description: The purposes of this study were to (a) determine graduate students' perceptions of the effectiveness of the delivery system and their level of comfort with the delivery system, (b) determine graduate students' perceptions of the effectiveness of the delivery system and their level of comfort with the teacher, (c) determine graduate students' level of comfort with the delivery system and their level of comfort with the teacher, (d) determine differences in graduate students' ratings of the effectiveness of the delivery system before a distance education session and after a distance education session, and (e) determine differences in graduate students' level of comfort with the teacher before a distance education session and after a distance education session.
Date: December 1995
Creator: Bangpipob, Savanee
Partner: UNT Libraries
open access

Intellectuals and National Socialism: The Cases of Jung, Heidegger, and Fischer

Description: This thesis discusses three intellectuals, each from a distinct academic background, and their relationship with National Socialism. Persons covered are Carl Gustav Jung, Martin Heidegger, and Eugen Fischer. This thesis aims at discovering something common and fundamental about the intellectuals' relationship to politics as such. The relationship each had with National Socialism is evaluated with an eye to their distinct academic backgrounds. The conclusion of this thesis is that intellectuals succumb all too easily to political and cultural extremism; none of these three scholars saw themselves as National Socialists, yet each through his anti-Semitism and willingness to cooperate assisted the regime.
Date: August 1995
Creator: Stewart, Richard M. (Richard Matthew)
Partner: UNT Libraries
open access

A Two Semester Life Science Syllabus for Use in Texas Public Schools with Seventh Grade Students

Description: The problem of using a state adopted textbook written to apply to a large body of students with varying interests and needs was overcome by using a detailed syllabus that arranged course content in a meaningful sequence that appealed to student interest. The outlined syllabus prepared a two semester life science curriculum to be used by the teacher to guide lesson planning. Both semesters were divided into three units each. Materials included in the syllabus were given to actual student groups in real classroom settings. Since hands on learning was an important part of classroom instruction, two laboratory sections were included in the appendices to be used with the syllabus.
Date: May 1995
Creator: Edwards, Gail G. (Gail Graham)
Partner: UNT Libraries
open access

Echoes of Eugenics : Roe v Wade

Description: Traces the inter-related histories of the eugenics movement and birth control, with an emphasis on abortion. Discusses Sarah Weddington's arguments and the Supreme Court's ruling in Roe v Wade. Straws the eugenic influences in the case and asserts that these influences caused the decision to be less than decisive.
Date: August 1995
Creator: Wunderlich, Jo (Jo Parks)
Partner: UNT Libraries
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