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  Partner: UNT Libraries
 Department: Department of Psychology
 Decade: 2000-2009
 Collection: UNT Theses and Dissertations
Cognitive and perceptual-motor indicators of lateralized vs. diffuse brain damage in adults.

Cognitive and perceptual-motor indicators of lateralized vs. diffuse brain damage in adults.

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Date: December 2002
Creator: Gregory, Erin Kathleen Taylor
Description: Among the goals of the neuropsychological assessment are to detect the presence of brain damage, localize which areas of the brain may be dysfunctional and describe subsequent functional impairments. The sensitivity of neuropsychological instruments in carrying out these functions is a question of some debate. The purpose of this study is to determine the utility of lateralizing indicators from the WAIS-III, McCarron Assessment of Neuromuscular Development (MAND) and Haptic Visual Discrimination Test (HVDT), from the McCarron-Dial System Neuropsychological Assessment Battery (MDS), in ascertaining the presence or absence of brain damage as well as location of lesion. The classification accuracies of using performance level indicators from these tests and lateralizing indicators, alone and together, were compared.
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Cognitive Complexity and Construct Extremity in Social and Life Event Construing in Persons with Varied Trauma History

Cognitive Complexity and Construct Extremity in Social and Life Event Construing in Persons with Varied Trauma History

Date: December 2006
Creator: Shafenberg, Stacey
Description: The purpose of this study was to examine cognitive complexity, extremity, and the relationship between social repertory grids and life events repertory grids (LERG) in people who report a history of trauma. Effects of type of trauma on complexity and extremity scores of each type of grid were examined. Prior research into repertory grids and trauma has used only one type of grid, predominantly social grids or LERGs. Therefore, a natural, progressive step in the grid research involved investigating how individuals integrate social and life event constructs. It was hypothesized, and results show, that there is a positive correlation between complexity scores and extremity scores of social grids and LERGs. However it was not found that there was a negative correlation between trauma history and complexity scores, and that trauma acts as a moderator for cognitive complexity. Instead, it appears that the social facet of experience is key to understanding perception of traumatic experiences. Additionally, number of traumas experienced might affect social construct elaboration.
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Cognitive differences between congenitally and adventitiously blind individuals.

Cognitive differences between congenitally and adventitiously blind individuals.

Date: August 2003
Creator: Hupp, Gregory S.
Description: It is apparent from the historical perspective regarding the theories of cognitive development and the cognitive functioning of individuals with visual impairments, that sight plays a major role in the development of certain cognitive processes. However, the affects of visual impairment on cognitive development remain to be at issue. Since sight seems to be highly integral in cognitive development beginning in the early stages of physical development, about the sixth month of life, and then begins to diminish in importance as verbal communication develops around eighteen months, then it should stand to reason that significant visual impairment or blindness occurring prior to this time would adversely impact an individual's cognitive development. Conversely, the occurrence of visual impairment or blindness after this critical period of development would have less of an impact. Cognitive theorists have proposed that visually impaired or blind persons may have developed different cognitive pathways to acquire, process, and accommodate sensory information. As a result, visually impaired or blind (VI/B) persons may "think differently" than sighted individuals. The present study was designed to address these issues as they relate to cognitive and neuropsychological development at various stages of growth and to examine possible differences in neuropsychological functioning dependent ...
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Cognitive Dysfunction in Middle-Aged Adults vs. Older Adults with Obstructive Sleep Apnea

Cognitive Dysfunction in Middle-Aged Adults vs. Older Adults with Obstructive Sleep Apnea

Date: August 2009
Creator: Dolan, Diana C.
Description: The presence of cognitive deficits in obstructive sleep apnea (OSA) is well-documented. Specifically, short- and long-term memory, attention/vigilance, and executive function (e.g. processing speed, mental flexibility, and problem solving) are affected. Cognitive deficits in aging occur in similar areas (i.e., memory and processing speed). Given that a greater percentage of older adults experience sleep-disordered breathing as compared to middle-aged adults, it is possible that OSA may account for some of the deficits typically attributed to aging. This study investigated this hypothesis by comparing middle-aged and older adults with and without OSA on computer-based measures of cognitive performance. No effect of OSA or an interaction between OSA and age on cognitive function was found; an effect of age on processing speed, distinguishing stimuli rapidly, attention, spatial ability/mental flexibility, and both working memory and short-term visual memory was found. This study also explored whether or not cognitive function may be improved in persons with OSA by re-assessing those participants one month after treatment. An effect of treatment on improvements on processing speed, distinguishing stimuli rapidly, mental flexibility, and short term memory was found. Overall, findings reflect the ability of treatment to improve cognitive function among OSA patients, regardless of lack of deficits ...
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Cohort differences in perceptions of helpful counselor characteristics

Cohort differences in perceptions of helpful counselor characteristics

Date: August 2002
Creator: Utermark, Tamisha L
Description: The present study examined age cohort differences in older and younger adults as they relate to perceptions of helpful counselor characteristics. The present study also assessed whether previous help-seeking behavior influences perceptions of what counselor characteristics would be helpful. The social influence model is used as basis for predictions. The first research hypothesis for the present study was that there would be an age by cohort interaction in perceptions of helpful counselor characteristics at both Time 1 (1991) and Time 2 (2001). The second research hypothesis was that there would be a main effect for cohort, with more recently born cohorts preferring more interpersonal counselor characteristics. The third research hypothesis was that there would be a main effect for age in endorsement of the social influence model. The fourth research hypothesis was that there would be a significant difference between the perceptions of those individuals who had previously sought help from a mental health professional and those individuals who had not sought help, regardless of age and cohort. A revised Adjective Check List (Gough, 1965; Gough & Heilbrum, 1983) was used to assess perceptions of helpful counselor characteristics. Chi-square analyses, MANOVA/supplementary ANOVAs, and exploratory factor analyses were used to test ...
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Collaboration for organization success: Linking organization support of collaboration and organization effectiveness.

Collaboration for organization success: Linking organization support of collaboration and organization effectiveness.

Date: December 2005
Creator: Harris, Cheryl Lynne
Description: What does it take for organizations to support people working together effectively? What does it mean for an organization to be effective? Does successful collaboration lead to more effective organizations? This study explored these questions both theoretically and empirically in an effort to help organizations understand the most important aspects to consider when attempting to achieve collaboration for organization success. The purpose of this study was to fill some of the gaps in the research by taking a broad, holistic approach to exploring the context required to support collaboration at levels of organizations broader than the team and exploring the links between organization support of collaboration and organization effectiveness. In preparation for the current study, the Organization Support of Collaboration model was developed to identify the broad organization design elements that are required to support collaboration. The Organization Effectiveness model was created to provide a holistic view of what it takes for an organization to be considered effective. The present study empirically validated these models and explored the links between them. Data was collected via a web-based questionnaire administered to a broad sample of individuals who work in organizations. Results supported a model of Organization Support of Collaboration with six ...
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College Student Identity and Attitudes Toward Gays and Lesbians

College Student Identity and Attitudes Toward Gays and Lesbians

Date: August 2003
Creator: Tureau, Zachary L.
Description: This study investigates the relationship between an individual's attitude toward gay men and lesbians and their identity development. The sample included 440 undergraduates from a university in the northeast Texas area. Many, if not all, of the factors that are associated with negative attitudes toward gays and lesbians (i.e., restrictive gender-role attitudes, high levels of authoritarianism, perceptions of negative attitudes toward homosexuals within their peer group, little or no contact with homosexuals, and conservative religious ideologies) have a logical relation to identity development. Furthermore, the various functions that attitudes toward gays and lesbians can serve (e.g., value-expression, group membership) were hypothesized to be especially attractive for persons in specific identity statuses. Thus, the case was made that identity development may be a valuable framework in which to understand attitudes toward gays and lesbians. In the current study, attitudes toward gays and lesbians were related to identity development, though the relationship is complex. When comparing persons who were higher and lower on absolutism, attitude toward gays and lesbians were most similar in achieved identity groups, while those who were foreclosed were the most disparate. In the interaction between identity, absolutism and gender role stereotyping, some groups utilized their attitude to express ...
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Combat Posttraumatic Stress Disorder: Effect of Intelligence on Symptomatology

Combat Posttraumatic Stress Disorder: Effect of Intelligence on Symptomatology

Date: May 2004
Creator: Crisp, William A.
Description: The objective of this study was to examine the relations between Posttraumatic Stress Disorder symptomatology and intelligence. Thirty American combat veterans of the Vietnam War, diagnosed with chronic PTSD, were given a psychodiagnostic structured interview. Participants were assessed for Intelligence Quotient as well as the veracity of their self report. The study found that there were significant differences in how participants experienced their PTSD symptoms that were correlated with intelligence. The higher IQ participants reported more frequent and intense guilt related symptoms as well as more intense intrusive recollections. The lower IQ participants experienced more frequent startle responses, more intense problems related to falling or remaining asleep and more frequent affective symptoms related to emotional numbing. Psychologists could use these differences in how PTSD is experienced in treatment planning. It may be useful for therapy to address sleep disturbances and affective numbing in lower IQ individuals. Therapy for higher IQ individuals may be more useful if it addresses feelings of guilt and intrusive recollections.
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Comparative analysis of chronic versus acute stressors and their influence on distress consequences at work

Comparative analysis of chronic versus acute stressors and their influence on distress consequences at work

Access: Use of this item is restricted to the UNT Community.
Date: August 2000
Creator: Crawford, Julie Schwarz
Description: Workplace stress has been found to be a causal agent of psychological distress consequences in employees. Chronic stressors have been well researched, in particular, role conflict, role ambiguity, and work overload have been extensively studied. A meta-analysis was conducted in order to aggregate past research to gain a better understanding of the impact these stressors have on the psychological distress consequences of depression, tension/anxiety, somatic complaints, and generalized feelings of stress. Only role ambiguity was found to be a significant contributor to psychological distress, in particular to feelings of depression and stress. In general, however, effect sizes for all three stressors were moderate to large. While chronic stressors have been well researched, acute stressors have been widely overlooked. Since research in this area is limited, the Daily Work Hassles Survey was developed and validated in order to analyze the role daily hassles play in the workplace. The survey yielded two factors, Interpersonal Hassles and Task Hassles. The former of which was found to be significantly related to the distress consequences of depression, tension/anxiety, somatic complaints, and general feelings of stress. The ultimate goal of this project was to compare chronic and acute stressors. Results from the daily hassles study were ...
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Comparative Models of the Impact of Social Support on Psychological Distress in Cancer Patients

Comparative Models of the Impact of Social Support on Psychological Distress in Cancer Patients

Date: May 2000
Creator: Forjaz, Maria João Bettencourt Pereira
Description: This study tested the relationship between Social Support, Psychological Distress, and Illness Stress in individuals who report cancer as a health condition. This study was based on archival data obtained from the Wave 1 of the Health and Retirement Study (HRS). The HRS provides a nationally representative sample of individuals aged 51 to 61 in 1992 and their spouses. The study sample was limited to cancer patients with a spouse or partner (n = 503). A structural equation modeling analysis procedure was used to test the theoretical models. Measures of social support were limited to variables assessing the participant's satisfaction with social support. Evidence was found for the Stress Prevention and the Support Deterioration models. This is congruent with previous research using measures of social support perception. Both the Stress Prevention and the Support Deterioration models predict a negative relationship between Illness Stress and Social Support. In addition, a univariate analysis of variance was used to test the stress buffering model. Similarly to other studies measuring the individual's degree of integration, or its perception, in the social network, the present research supported the only the Main Effect model and not the Stress Buffering model.
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