Pathophysiology and Racial/Ethnic Disparities in the Progression of Metabolic Syndrome

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Disparities exist in the U.S. between the health status of African American and Hispanic individuals and the health status of non-Hispanic Caucasian individuals across all age groups. Those minority individuals age 55 and over are more likely to suffer from specific health disparities in areas such as diabetes, heart disease, and cancer than their white majority counterparts. Among the most common chronic disorders experienced within this age group are obesity, type II diabetes and cardiovascular disease, all three of which collectively form what has recently become known as metabolic syndrome. As of 2004, metabolic syndrome is diagnosable once criteria are clinically significant for a variety of different risk factors designated by the World Health Organization. However, like many syndromes these criteria are not stable across individuals, and leaves variability between individuals being diagnosed. It has been seen that each of the above mentioned racial/ethnic groups experience the individual risk factors at disproportionate rates, making it plausible that metabolic syndrome could be experienced in distinctly different ways depending upon racial/ethnic background. Using two nationally representative data sets, it is first largely evident that African American and Hispanic individuals are reaching higher peak rates of diabetes and cardiovascular disease much earlier in …
Date: August 2006
Creator: O'Neill, Amy E.
System: The UNT Digital Library

Influence of executive function on medication adherence in neurologically impaired and non-impaired elderly.

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Medication non-compliance has become one of the most prevalent reasons for hospitalization and doctor's visits by the elderly. As the elderly population is more likely to have decreased cognitive abilities, it is suggested that neuropsychological factors, especially executive function, are more influential in medication non-compliance than once thought. This study looked at executive function performance on a traditional battery of neuropsychological tests, self-report of perceived ability to perform executive function tasks, and the newly developed Pillbox Test, a performance based IADL measure. The Pillbox Test is designed to replicate a type of medication-management specific IADL as a means to asses executive function. Standard executive function measures only tap a portion of executive function, but it is believed that the Pillbox Test incorporates all four theoretical domains of executive function. The multiple measures of executive function performance were compared in three prevalent subgroups of the elderly population (mixed neurological group, cardiac medical-control group, and healthy community-control group). Results found significant differences, where the community-control and cardiac groups outperformed the mixed neurological group on the large majority of executive function tasks. Smaller differences were also noted between the community-control and cardiac groups and between the cardiac and mixed neurological groups. Together, these …
Date: August 2006
Creator: Zartman, Andrea Leigh
System: The UNT Digital Library

Employee empowerment: Relationships between location in the hierarchy, span of control, and industry type on perceptions of empowerment.

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The current study seeks to examine the relationships between perceptions of employee empowerment and perceptions of leadership, span of control, and industry type. Participants were gathered from an archival source employing a high school alumni e-mail group (n = 361) and a survey from 9 organizations (n = 647) and combined into a larger sample (n = 1008). The participants took Bodner's (2005) Assessment of Employee Empowerment and Assessment of Empowering Leadership instruments. Support was found to suggest that people report being less empowered than they believe that top management would report about them. Also, participants reported that their leader was less empowering than they believed top management would report about the leader. Span of control was found to impact perceptions of empowerment. Production workers reported feeling more empowered than workers in service industries. Participants did not report that leaders were more empowering if they were higher in the hierarchy (executive) than lower levels (coach, employee). Also, a respondent's position did not affect the relationship between job type and feelings of empowerment. This study suggests that the organizational design (span of control) and industry type may affect empowerment initiatives, while lower levels of the organization may view empowerment much differently …
Date: August 2006
Creator: Turner, Jon T., Jr.
System: The UNT Digital Library
Predicting Counter-Productive Workplace Behavior: Item Level Analysis of an Integrity Test (open access)

Predicting Counter-Productive Workplace Behavior: Item Level Analysis of an Integrity Test

Counter-productive workplace behavior (CWB) is defined as any intentional behavior on the part of an organization member viewed by the organization as contrary to its legitimate interests. A growing body of literature reveals that individual variables and pre-employment integrity tests can play a strong role in the prediction of CWB. The empirical literature has failed to clarify which type of individual level antecedents, or types of integrity test items, are more predictive of CWB. The current study evaluated data collected from restaurant employees (N=464) that measured items relating to personality tendencies, attitudes toward acceptance of counter-productive behaviors, work and high school background, and admissions of counter-productive behavior. A confirmatory factor analysis revealed a mediocre fit to a typology of CWB (interpersonal CWB vs. organizational CWB). Correlation analysis revealed that only specific attitudinal items and empirically keyed biodata items were significantly related to CWB. Hierarchical regression analysis found that attitudinal items paralleling admissions of CWB contributed variance beyond that of other personality and work and high school background antecedents.
Date: August 2006
Creator: Impelman, Kevin
System: The UNT Digital Library
Compassion and Person Perception: An Experiment (open access)

Compassion and Person Perception: An Experiment

Compassion is one of the fundamental experiences which signify human existence. Person perception is the constructive process with which we form an opinion or judgment of another person. Two experiments (N =277) were conducted in this study. Experiment 1 examined the effects of a mindfulness meditation on compassion in a large sample of young adults. Participants (n =76) were randomly assigned to three groups. Participants in group 1 received the mindfulness meditation, group 2 received an alternate version of the mindfulness meditation (self-focus only), and participants in group 3 were asked to complete an attention task and read a geological text. It was hypothesized that mindfulness meditation is significantly associated with the experience of compassion. Results showed that participants in the experimental group 1 experienced significantly higher levels of compassion compared to participants in the control group 3. The participants in group 2 were not different from experimental group 1 or from control group 3. Gender differences in the effects of meditation on compassion were explored. Different measures yielded conflicting evidence for gender differences in experienced compassion. For the second experiment a Solomon four-group experimental design was employed to examine the possible effects of compassion on person perception. Participants (n …
Date: August 2006
Creator: Raina, Karina Christina
System: The UNT Digital Library
Change in Depression of Spousal Caregivers of Dementia Patients. (open access)

Change in Depression of Spousal Caregivers of Dementia Patients.

Caring for a family member or loved one with dementia places a heavy burden on those providing the care. Caregivers often develop chronic depression because of having to deal with this burden. A great deal of literature has been published discussing coping effectiveness, effects of social support, and other internal and external means of support for the caregiver. However, little has been written about the changes, if any, in depression that the caregiver experiences after the termination of care, either through institutionalization or death of the person with dementia. This study examined whether there is a change in depression of spousal caregivers after institutionalization of the dementia care recipient as well as any changes in depression that may have occurred as a result of the death of the dementia care recipient. Two theoretical models, the wear and tear model and the adaptation model were discussed in terms of caregiver depression after institutionalization of the dementia care recipient. Two other theoretical models, the relief model and the stress model, were discussed in terms of caregiver depression after the death of the dementia care recipient. Datasets from the National Institute on Aging sponsored Health and Retirement Study were analyzed. Results indicate that …
Date: August 2006
Creator: Tweedy, Maureen P.
System: The UNT Digital Library
Development of a Multidimensional Approach to Understanding Youthful Offenders: The Influence of Psychosocial and Personality Risk Factors (open access)

Development of a Multidimensional Approach to Understanding Youthful Offenders: The Influence of Psychosocial and Personality Risk Factors

This study employed a multivariate, multidimensional approach to understanding psychosocial and personality variables associated with institutional maladjustment and recidivism among youthful offenders. Participants included nine hundred serious and chronic male youthful offenders incarcerated in the Texas Youth Commission (TYC); sample sizes varied by analysis. Empirically-validated psychosocial factors (e.g., intelligence, home approval status), past criminal history variables, and two self-report personality measures of empathy and hostility were entered into hierarchical regression and structural equation modeling (SEM) analyses to predict institutional behavior and recidivism at one- and three-year intervals after release from the TYC. Confirmatory factor analysis of the personality measures revealed one underlying factor indicative of their theoretical constructs of empathy and hostility. Some differences were noted between youth in the specialized treatment programs; however, effect sizes were small to moderate. Overall, regression and SEM results indicated the variables accounted for a meaningful proportion of the variance in the outcomes. Specifically, although length of stay in the TYC was associated with institutional behavior, younger age of onset, higher hostility, and greater home disapproval also contributed significantly. Past criminal behavior was predictive of future reoffending, but lower empathy, greater home disapproval, and younger age of onset accounted for a substantial portion of …
Date: August 2006
Creator: Noffsinger, Mary A.
System: The UNT Digital Library
Caregiving Style in Diverse Samples of Caregivers. (open access)

Caregiving Style in Diverse Samples of Caregivers.

With three homogenous caregiver groups (i.e., Alzheimer's caregivers, grandparents raising grandchildren, parents), caregiving styles were explored to determine their reliability and validity, their unique role in predicting caregiver outcomes, and their differences between groups of caregivers. A conceptual framework was adapted to determine the impact of contextual variables, caregiving styles, caregiver appraisal, and mediating variables on caregiving outcomes. A more concise version of the Caregiving Style Scale (CSS) was developed with 49 items yielding an internal consistency coefficient of .74. As expected, three caregiving styles emerged and were positively related to the parallel parenting styles. Across the caregiver samples, there were positive relationships among caregiving style dimensions within the same caregiving style, while those from opposing caregiving styles tended to have negative relationships indicating good convergent and discriminant validity. Authoritative caregiving style dimensions were generally associated with healthier functioning, while authoritarian and permissive caregiving style dimensions were correlated with less healthy functioning. Caregiving style dimensions were among the predictors of several outcome measures, highlighting the importance of their placement in the conceptual framework for caregiver stress and coping. Generally, an unexpected finding was that authoritative caregiving style dimensions tended to predict less adaptive caregiving outcomes, particularly for parents and grandparents, …
Date: August 2006
Creator: King, Jennifer Kay
System: The UNT Digital Library
Changes in Quantitative EEG and Low Resolution Tomography Following Cranial Electrotherapy Stimulation. (open access)

Changes in Quantitative EEG and Low Resolution Tomography Following Cranial Electrotherapy Stimulation.

The effects of cranial electrotherapy stimulation (CES) on human EEG and brain current density were evaluated by quantitative electroencephalography (qEEG) and low resolution brain electromagnetic tomography (LORETA). A total of 72 research subjects were provided with a single session of CES, 38 were provided with 0.5 Hz CES while 34 were provided with 100 Hz CES. The qEEG paired t-tests revealed that in both frequencies of CES there was a significant (.05) increase in alpha relative power with concomitant decreases in delta and beta relative power. The 0.5 Hz CES decreased a wider frequency range of delta activity, while the 100 Hz CES decreased a wider frequency range of beta activity; suggesting some difference may exist in the EEG response to different frequencies of CES. The changes found in qEEG relative power were consistent with the affective and cognitive effects of CES reported in the literature, such as increased relaxation and decreased anxiety. Statistically significant changes for qEEG values other than relative power, such as coherence, amplitude asymmetry, phase lag and power ratios were also found. The LORETA paired t-tests found statistically significant (.05) increases in cortical and subcortical theta and alpha frequency current density with concomitant decreases in delta …
Date: August 2006
Creator: Kennerly, Richard C.
System: The UNT Digital Library
Stressors, Social Support, and Stress Reactions: A Meta-Analysis (open access)

Stressors, Social Support, and Stress Reactions: A Meta-Analysis

This study examined, via a meta-analysis, the relations among stressors, social support, and stress reactions. Unexpectedly, small to medium negative, but robust effect sizes were found for the stressors-social support relation. As expected the stressor-stress reaction relation was positive, and the social support-stress reaction relation was negative. Both relations had small to medium effect sizes that ranged from weak to very robust. The direct effect of social support on the stressor-stress reaction was generally supported, whereas the suppressor and mediating models were not supported. Furthermore, the findings were inconclusive for the moderator effect of social support. Non-interpersonal traumas appear different in the stressor-social support and social support-stress reaction relations compared to other trauma types. These findings have important clinical implications.
Date: August 2006
Creator: Piper, Lynn J.
System: The UNT Digital Library
Gender differences in a prototypical analysis of psychopathy. (open access)

Gender differences in a prototypical analysis of psychopathy.

Psychopathy research has focused primarily on characteristics of male offenders. With little empirical knowledge on psychopathy in women, gender differences within psychopathy are not well understood. To gain a better understanding of these differences, the current study used prototypical analysis to compare ratings of 242 forensic experts when considering their most representative case of male or female psychopathy. The present study investigated gender differences for psychopathic traits and Cluster B personality disorder criteria. Most aspects of psychopathy were less prototypical of female psychopaths than males. In particular, the antisocial behavior facet does not appear to apply to males and females equally. The distinction between Cluster B disorders and psychopathy was more ambiguous in females than males; however, the affective deficits facet differentiated psychopathy from Cluster B disorders across genders. Current research also raises the question of potential diagnostic gender bias in the assessment of psychopathy.
Date: August 2006
Creator: Hazelwood, Lisa L.
System: The UNT Digital Library
Cardiovascular Problems as a Predictor of Later Cognitive Decline: Moderating Effect of General and Spousal Social Support. (open access)

Cardiovascular Problems as a Predictor of Later Cognitive Decline: Moderating Effect of General and Spousal Social Support.

Individuals are living longer now than they have in the past. As a result, there is an increased incidence in illnesses that are more prevalent in later life. One group of illnesses that is more prevalent is age related dementia. Alzheimer's disease (AD) and vascular dementia (VaD) are two common types of dementia found in the older adult population. Recent research suggests that these two types of dementia may both have a vascular component that is instrumental in their development. Not only may this vascular component be present in both these illnesses, but also it may be related to a more severe cognitive decline in the aging process. Results indicate that both cardiovascular disease and general and spousal social support in middle age are all three independent significant predictors of mild cognitive impairment and other non-normative cognitive impairment in later life. However, results do not indicate that social support moderates the relationship between cardiovascular disease and cognition.
Date: August 2006
Creator: Earnheart, Kristie
System: The UNT Digital Library
Are Deficits in Mindfulness Core Features of Borderline Personality Disorder? (open access)

Are Deficits in Mindfulness Core Features of Borderline Personality Disorder?

Mindfulness is a core component of dialectical behavior therapy (DBT), a widely utilized treatment for borderline personality disorder (BPD); however, the import of mindfulness in treating BPD has yet to be demonstrated, and the relationship of mindfulness to BPD constructs is unclear. The current study utilized structural equation modeling to examine the relations of mindfulness with BPD features and the underlying constructs of interpersonal problem-solving effectiveness, impulsivity, emotion regulation strategies, and neuroticism in 342 young adults. Mindfulness was significantly related to effectiveness in interpersonal problem-solving, impulsivity and passivity in emotion regulation, and borderline features. Furthermore, mindfulness continued to predict borderline features when controlling for interpersonal problem-solving and impulsive/passive emotion-regulation strategies, as well as when controlling for neuroticism. It is concluded that difficulties with mindfulness may represent a core feature of BPD and that improvement in mindfulness may be a key component of treatment efficacy with BPD. It is recommended that the unique contribution of mindfulness be investigated in future treatment-outcome research.
Date: August 2006
Creator: Wupperman, Peggilee
System: The UNT Digital Library
Social Self-Concept and Positive Illusory Bias in Boys and Girls With and Without Attention-Deficit/Hyperactivity Disorder (open access)

Social Self-Concept and Positive Illusory Bias in Boys and Girls With and Without Attention-Deficit/Hyperactivity Disorder

This study examined differences in social self-concept, as measured by the Self-Perception Profile for Children (SPPC), between boys and girls with and without attention-deficit/hyperactivity disorder (ADHD) while controlling for internalizing symptoms. Ninety-six children between the ages of 8 and 13 participated in the study as part of a larger project. Teacher reports of social competence were collected using the Teacher Rating Scale (TRS). The results indicated ADHD children experienced more peer rejection than control children. ADHD girls appeared to be more susceptible to low social self-concept and competence than control children or ADHD boys. Inattentive symptoms were most predictive of teacher reports of competence. Positive illusory bias was not found to serve a protective function in children regardless of ADHD status. The implications of the current study and directions for future research are presented.
Date: August 2006
Creator: Barton, Kimberly A.
System: The UNT Digital Library