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MEDIATORS FOR QUALITY OF LIFE IN SURVIVORS WITH BRAIN INJURY
Title
MEDIATORS FOR QUALITY OF LIFE IN SURVIVORS WITH BRAIN INJURY
Creator
Johnson, Kristina S.
Date
2017, 2017-07
Description
Injury to the brain can range in cause, severity, and outcomes. Individuals with brain injury may experience both physical and cognitive...
Show moreInjury to the brain can range in cause, severity, and outcomes. Individuals with brain injury may experience both physical and cognitive impairments. Not only can a patient experience a wide range of symptoms, these symptoms also can vary drastically in severity. Research has shown that these symptoms play a role in a person’s quality of life following injury: the worse a person’s symptoms are, the lower they report their quality of life. However, recent research suggests that psychosocial factors may mediate the relationships between disability severity and quality of life across multiple rehabilitation populations. Two of the previously researched psychosocial constructs include social support and a sense of mastery over the disability or disease. The purpose of this study was to examine a structural model hypothesizing the mediating role of these two constructs on the relationship between symptom severity and quality of life among adults with brain injury. Participants in this study included 183 individuals with brain injury recruited through state brain injury organizations across the United States to participate in an online survey study. Using structural equation modeling (SEM), results demonstrated good model fit. (χ2(15, n = 183) = 13.68). Normed Bentler-Bonnet fit index (NFI) was .97; Goodness-of-Fit statistic (GFI) was .98; Adjusted-goodness-of-fit (AGFI) was .96; and Comparative fit index (CFI) was 1.00 (indices exceeding .90 indicate acceptable fit). Examination of the direct effects showed that perceived social support and sense of mastery are negatively associated with symptom severity (-.19 and -.66 respectively). Additionally, perceived social support was positively associated with mastery (.30). Both mastery and social support were moderately related to quality of life (.46 and .53, respectively). Rmediation analysis revealed perceived social support and mastery fully mediate the relationship between symptom severity and quality of life. Additionally, mastery partially mediated the relationship between social support and quality of life. These findings highlight the importance of incorporating these psychosocial factors into clinical interventions with hopes of increasing levels of perceived social support and mastery, and ultimately promoting quality of life. Further research is needed to explore the best strategies to increase support and mastery within the brain injury population and to identify additional psychosocial factors that may be mediators of quality of life.
M.S. in Psychology, July 2017
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Factor Analysis of a Stigma Measure for Adults with Autism
Title
Factor Analysis of a Stigma Measure for Adults with Autism
Creator
Beedle, Robert Brian
Date
2019
Description
This study evaluates a measurement tool for public stigma of adults with autism. Autism Spectrum Disorder (ASD) is a developmental disability...
Show moreThis study evaluates a measurement tool for public stigma of adults with autism. Autism Spectrum Disorder (ASD) is a developmental disability affecting individuals’ sensory experiences, behaviors, and social interactions (American Psychiatric Association, 2013). Current literature has examined public stigma of ASD through qualitative methods and select attitude and social distance scales, consistently reporting lower levels of negative attitudes when disclosure of ASD diagnosis is provided (Gray, 2002; Hennegan, 2010; Obeid et al, 2015). Other research suggests adults with ASD frequently experience stigma and discrimination in their daily lives across settings (MacLeod, Lewis, & Roberson, 2013; Nicolaidis et al, 2015; Thibault, 2014). Previous research has not examined whether known processes of stigma (i.e., Attribution Theory, Danger Appraisal models) are applicable to understanding the stigma reported by this population. In the current study a commonly used measure of the stigma of mental illness (Attribution Questionnaire 27) was administered to determine its psychometric properties when applied to adults with ASD. Examination of a previous measurement model for this questionnaire on a sample of participants (N = 160) indicated lack of model fit. A larger sample (N = 306) was collected to determine the data-driven factor structure of this measure. A series of exploratory factor analyses indicates a three-factor, 24-item solution that displays strong psychometric properties, as well as convergent validity with other measures of attitudes towards disabilities and ASD. Results of this study suggest additional need to research the topic of stigma towards adults with ASD.
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