Examining an eating disorder model with African American women. (open access)

Examining an eating disorder model with African American women.

In the current study, I examined the general sociocultural model of eating disorders that suggests that sociocultural pressures leads to internalization, which in turn leads to body dissatisfaction and ultimately disordered eating. Because I am testing this model with a sample of African American women, I also am including acculturation as a variable of interest. Specifically, I hypothesized that (a) the experience of more societal pressure to be thin will be related to greater internalization, (b) higher levels of acculturation will be related to greater internalization, (c) internalization of the thin ideal will be directly and positively related to body image concern, and (d) body image concern will be associated with higher levels of disordered eating. It was determined that there is a direct, negative relationship between Level of Identification with Culture of Origin and Internalization. Perceived Pressure was directly and positively related to both Internalization and Body Image Concerns. Body Concerns and Internalization were both directly and positively related to Disordered Eating. These findings suggest that although many of the same constructs related to disordered eating in other ethnic groups are also related to disordered eating among African American women, the relationships between the factors differs across racial/ethnic groups. …
Date: December 2008
Creator: Wood, Nikel Ayanna Rogers
System: The UNT Digital Library
Neurocognitive implications of diabetes on dementia as measured by an extensive neuropsychological battery. (open access)

Neurocognitive implications of diabetes on dementia as measured by an extensive neuropsychological battery.

Diabetes is a disease with a deleterious pathology that currently impacts 4.5 million individuals within the United States. This study examined the ability of a specific neuropsychological battery to identify and classify dementia type, investigated the impact of diabetes on cognition and analyzed the ability of the memory measures of the 7 Minute Screen (7MS) and the Rey-Osterrieth Recall to correctly categorize dementia type when not used in combination with a full battery. The battery in addition to exhaustive patient history, medical chart review and pertinent tests were used in initial diagnosis. Results indicated the battery was sufficient in the identification and classification of dementia type. Within the sample, diabetes did not appear to significantly impact overall battery results whereby only two measures were minimally affected by diabetes. Finally, the memory measures of the 7MS and the Rey-Osterrieth Recall were sufficient to predict membership into the Alzheimer's (AD) and vascular dementia (VD) groups with 86.4% accuracy. The classification percentage dropped to 68.3% with addition of the mild cognitive impairment category. The full battery correctly classified AD and VD dementia 87.5% and appeared to be the most robust.
Date: December 2008
Creator: Harris, Rebekah Lynn
System: The UNT Digital Library
An item response theory analysis of the Rey Osterrieth Complex Figure Task. (open access)

An item response theory analysis of the Rey Osterrieth Complex Figure Task.

The Rey-Osterrieth Complex Figure Task (ROCFT) has been a standard in neuropsychological assessment for six decades. Many researchers have contributed administration procedures, additional scoring systems and normative data to improve its utility. Despite the abundance of research, the original 36-point scoring system still reigns among clinicians despite documented problems with ceiling and floor effects and poor discrimination between levels of impairment. This study is an attempt to provide a new method based upon item response theory that will allow clinicians to better describe the impairment levels of their patients. Through estimation of item characteristic curves, underlying traits can be estimated while taking into account varying levels of difficulty and discrimination within the set of individual items. The ultimate goal of the current research is identification of a subset of ROCFT items that can be examined in addition to total scores to provide an extra level of information for clinicians, particularly when they are faced with a need to discriminate severely and mildly impaired patients.
Date: December 2008
Creator: Everitt, Alaina
System: The UNT Digital Library
An exercise in story repair: A guided written disclosure protocol for fostering narrative completeness of traumatic memories. (open access)

An exercise in story repair: A guided written disclosure protocol for fostering narrative completeness of traumatic memories.

The present study sought to build on the large body of past research into written disclosure of traumatic memories. This research has consistently found that participants who write about their traumatic experiences realize long-term physiological and psychological health benefits. More recently, it has been found that those participants who realize the most benefits are those who progressively include more elements of a good narrative, or story, in their writing about a traumatic experience over several sessions. Therefore, research has begun to examine the role of language and the structure of language in the health benefits gained from written disclosure of traumatic memories. A guided written disclosure protocol was designed for the present study, which sought to aid participants in supplying an increasing amount of narrative structure to their written disclosures of a single traumatic experience. Participants (N = 30) completed several measures of psychological and physiological health prior to and one month after completing the guided written disclosure protocol. Analyses revealed that participants who completed all four writing sessions showed statistically significant reductions in symptoms of general psychological distress, obsessive-compulsive symptoms, and intrusive and avoidant symptoms related to the traumatic experience. No significant self-reported physiological health benefits were found. The …
Date: May 2008
Creator: Tomczyk, Daniel A.
System: The UNT Digital Library
Women's career success: The contributions of human capital, individual, organizational, and power variables. (open access)

Women's career success: The contributions of human capital, individual, organizational, and power variables.

Women are a significant presence in today's workforce; however, few rise to the top management ranks. Therefore, there is a critical need to better understand the factors that facilitate their success. This study examined several variables that may contribute to women's objective (income, span of control, promotions) and subjective (self-reported satisfaction) success. Predictive variables include human capital (training, experience), individual (perception of promotability, motivation for training), organizational (supervisor gender, percentage of male subordinates) and power (extent of supervisory authority) factors. Participants were members of the National Longitudinal Surveys Young Women cohort, conducted by the Bureau of Labor Statistics. Data were analyzed through simultaneous multiple regression analysis, and the results indicated that education was significantly related to income for all women. For women in management positions, their degree of supervisory power was also predictive of higher income, yet negatively associated with job satisfaction. Further, their span of control was positively influenced by the amount of time they spent in on-the-job training. The implications for women's career advancement, study limitations, and future research possibilities are also discussed.
Date: May 2008
Creator: Blansett, Karen D.
System: The UNT Digital Library
An empirical investigation of the influence of age, gender, and occupational level on stress perceptions, job satisfaction, organizational commitment, and turnover. (open access)

An empirical investigation of the influence of age, gender, and occupational level on stress perceptions, job satisfaction, organizational commitment, and turnover.

This study investigated relationships of age, gender, and supervisor level with job satisfaction, organizational commitment, stress perception, and turnover intention. The demographics were hypothesized to moderate the stress-satisfaction and commitment-turnover relationships. Hypotheses were tested using both parametric and non-parametric bootstrap methods. Subjects were taken from a national survey of 2,663 public sector IT workers. Missing data were imputed using NORM software. Ordinary least squares (OLS) regression indicated a significant direct effect from all main variables and covariates, except for age on turnover intent. No mediating effects were found. Age-Commitment was the only significant higher order modifier relationship, although Gender-Commitment explained substantial variance. LMG statistic results enabled the predictors to be rank ordered with confidence intervals. Best subset bootstrap regression explored all possible predictor orders to confirm which model explained the most variance. The original model and predictor sequence were confirmed. The bootstrap AIC statistic provided a model which maximized explained variance while optimizing parsimony. Since only age had a mediating effect, Hypotheses 1 and 2 were not supported. All other hypotheses were partially confirmed.
Date: May 2008
Creator: Cordas, Jon D.
System: The UNT Digital Library
The impact of training and learning on three employee retention factors: Job satisfaction, commitment and turnover intent in technical professionals. (open access)

The impact of training and learning on three employee retention factors: Job satisfaction, commitment and turnover intent in technical professionals.

The purpose of this study is to explore the benefits of providing employee training and learning beyond the specific content covered in such interventions, and how personality constructs might moderate those benefits. Training refers to the imparting of specific knowledge and tasks. Learning involves processes and skills that support on the job learning experiences. This study builds on previous research linking training and development to increased job satisfaction, and reduced turnover intent, by considering additional factors. The relationships between independent variables training, learning, task variety and task significance and outcome variables job satisfaction, commitment and turnover intent are assessed. Personality constructs of need for achievement and growth need strength are explored as possible moderating variables. This research was conducted using archival data (N = 500) collected from technical professionals employed by fourteen organizations in the Southwest United States. Both task variety and task significance were found to significantly predict all three outcome variables. Growth need strength was found to moderate the prediction of commitment by task variety. Need for achievement was found to moderate the prediction of job satisfaction, commitment and turnover intent by training and learning. Need for achievement was also found to moderate the prediction of both commitment …
Date: December 2008
Creator: Barcus, Sydney Anne
System: The UNT Digital Library
Team-based support systems: Generating a testable support systems model and accompanying hypotheses. (open access)

Team-based support systems: Generating a testable support systems model and accompanying hypotheses.

Scant research exists to illuminates the nature of organizational efforts, or support systems, designed to provide work teams with what is needed to be successful. The sample (N = 20) consists of experienced researchers and practitioners discussing work team implementations and the ongoing support needed for sustainability. The following seventeen team-based support systems were examined: (a) rewards and recognition, (b) team goal setting, (c) performance measurement, (d) performance appraisal, (e) team placement and structure, (f) communication and information systems, (g) culture, (h) training, (i) knowledge management, (j) business strategy, (k) leadership, (l) between teams integration, (m) resource distribution, (n) physical workspace, (o) program evaluation and renewal, (p) personnel selection system, and (q) work process design. This study uses a grounded theory approach to build a support system model and provide hypotheses for future research.
Date: December 2008
Creator: Turner, Jon T.
System: The UNT Digital Library
Functions of self-injurious thoughts and behaviors within adolescent inpatients. (open access)

Functions of self-injurious thoughts and behaviors within adolescent inpatients.

The primary interest of this investigation concerned the self-injurious thoughts and behaviors (SITBs) of inpatient adolescents. Previous researchers have provided descriptive information regarding either automatic (or intrinsic) and social components using the Self-Injurious Thoughts and Behaviors Interview (SITBI). However, the presence and trends of these components have not firmly been established, suggesting the need to explore this area further. Eighty-two adolescent inpatients were selected and interviewed using the SITBI to evaluate the predictive ability of self-reported self-injurious behavior with regard to social and automatic, negative and positive functions. Results showed that depending on the type of thought or behavior displayed one could discern the motivation behind their actions. Automatic-Negative was seen to have the strongest relationship across all SITB behaviors while Automatic-Negative was not found to be relatively low compared to other SITB behaviors. Both Social-Positive and Social-Negative were found to be present in moderate relationships compared to Automatic in general.
Date: December 2008
Creator: Thomas, Peter F.
System: The UNT Digital Library
Adult Attachment and Posttraumatic Growth in Sexual Assault Survivors. (open access)

Adult Attachment and Posttraumatic Growth in Sexual Assault Survivors.

Posttraumatic growth, defined as positive psychological changes in the aftermath of adversity and suffering, is a relatively recent focus in psychological research. The addition of this concept to the literature has provided a new, more resiliency-based framework through which to view survivors of various forms of trauma. Despite estimates that over half of all sexual assaults are not reported to the authorities, current crime statistics indicate that 1 in 4 women are sexually assaulted in their lifetime (Campbell & Wasco, 2005). Given the large percentage of the population that is impacted by sexual assault, it is essential that professionals better understand the factors that influence the successful healing and growth that can occur post-trauma. The purpose of this study was to further expand the literature on posttraumatic growth in sexual assault survivors by considering this phenomenon through the lens of attachment theory. Specifically, this study tested a proposed model of the inter-relationships among subjective and objective perceptions of threat during the sexual assault, adult romantic attachment, and posttraumatic growth. It was hypothesized that adult romantic attachment and parent-child attachment would mediate the relationship between subjective, or perceived threat, defined as the victim's perception of life threat, and objective threat, defined …
Date: August 2008
Creator: Gwynn, Stacy Roddy
System: The UNT Digital Library
Individual attachment styles and the correspondence/compensation hypotheses in relation to depression and depressive experiences. (open access)

Individual attachment styles and the correspondence/compensation hypotheses in relation to depression and depressive experiences.

Two hundred twenty individuals participated in the present study from a university population. The study examined the relationship among attachment styles to caregivers, relationship with God, depressive symptomology, and depressive experiences. Attachment theorists have suggested a connection between childhood attachment to caregivers and current attachment to God through the idea that individuals have "working models" that form how they interpret present relationships. For the most part, the results of the current study supported the idea of correspondence between attachment to caregiver and attachment to God. Individual attachment styles to caregivers matched their attachment style to God. However, when caregiver religiousness was included as a moderating variable, results supported the theory of combined compensation-correspondence for those with insecure attachments to caregivers. Individuals with insecure attachment to caregivers were more likely to compensate for their insecure attachment bonds through participation in religious activity, whereas their internal, private relationship with God corresponded with their previous insecure attachment bonds. Individuals with insecure attachment to caregivers were more likely to endorse symptoms of depression and report introjective, but not anaclitic, depressive experiences. With respect to attachment to God, introjective depressive experiences were positively related to both anxious and avoidant attachments, whereas, anaclitic depressive experiences were …
Date: August 2008
Creator: Hill, Mary Kathleen
System: The UNT Digital Library
Psychological characteristics contributing to performance on neuropsychological tests and effort testing. (open access)

Psychological characteristics contributing to performance on neuropsychological tests and effort testing.

The issue of effortful patient performance has been an area of clinical interest in individuals with minor traumatic brain injury (mTBI). Clinical attention to this area has increased largely because of an increase in the number of worker's compensation claims, injury-related lawsuits and/or insanity defense pleas. As patients are presented with the opportunity for secondary gain, the issue of optimum performance on neuropsychological measures becomes salient. In addition to neurocognitive deficits, there are psychological characteristics associated with mTBI including depression, emotional disturbance, personality changes, and other psychopathology. This study utilized the MSVT, a set of standard neuropsychological instruments, and the Minnesota Multiphasic Inventory-2 (MMPI-2) to investigate the relationships between effort, psychological characteristics, and neuropsychological functioning in individuals with minor traumatic brain injuries. The first objective of this study was to determine which psychological factors were related to effort in mTBI. The second objective was to determine if there were differences between groups that performed poorly on effort testing and groups that performed adequately on effort testing, based on relevant psychological characteristics. The results of the analyses supported the first hypothesis. Hysteria was inversely related to effort, and Mania was positively related to effort on one of five measures of effort. …
Date: August 2008
Creator: Hilborn, Robert Scott
System: The UNT Digital Library
Readiness for change as a predictor of treatment effectiveness: An application of the transtheoretical model. (open access)

Readiness for change as a predictor of treatment effectiveness: An application of the transtheoretical model.

Clinical research suggests that adolescent offenders often do not view their criminal behaviors as problematic and, therefore, are not motivated for treatment. Although customarily defined as a static characteristic, the transtheoretical model (TTM) proposes treatment amenability is dynamic and can be achieved through tailored interventions that motivate individuals for treatment. The current study examines the predictive validity of TTM measures for adolescent offenders at a maximum security correctional facility. In particular, the Stages of Change Scale (SOCS) and Decisional Balance for Adolescent Offenders (DBS-AO) were compared with a more traditional assessment tool utilized in evaluating treatment amenability of juvenile offenders (i.e., Risk-Sophistication-Treatment Inventory; RSTI). One hundred adolescent offenders from the Gainesville State School completed two waves of data collection with a 3-month time interval. Information was collected on offenders' treatment progress between waves. Consistent with TTM research, predictors of treatment progress included low scores on the Cons scale on the DBS-AO and on the Precontemplation scale on the SOCS. Participants in the most advanced levels of treatment also scored high on the Sophistication-Maturity scale on the RSTI and the Impression Management scale on the Paulhus Deception Scale.
Date: August 2008
Creator: Jordan, Mandy J.
System: The UNT Digital Library
Late adolescents' parental, peer, and romantic attachments as they relate to affect regulation and risky behaviors. (open access)

Late adolescents' parental, peer, and romantic attachments as they relate to affect regulation and risky behaviors.

The current study examined the relationships among attachment styles to parent, peer, and romantic partner, ability to regulate emotion, as well as engagement in sexual behaviors and substance use. Attachment theory and previous research suggests that an individual learns how to manage emotions through the modeling of appropriate techniques and a stable sense of self-worth. These two aspects develop through a secure attachment bond with an important figure. When an individual does not have a secure attachment bond in which to practice adaptive affect regulation strategies, he/she may attempt to manage emotions through external means, such as sexual behaviors or substance use. Overall, results supported these associations, with some notable exceptions. Across attachment sources a secure attachment style was related to lower levels of psychological distress and less engagement in substance use. In contrast to the findings from earlier studies, affect regulation did not mediate the relationship between attachment and substance use, and engagement in sexual behaviors was not significantly related to either attachment style or affect regulation.
Date: August 2008
Creator: Ingle, Sarah J.
System: The UNT Digital Library
Efficacy of neurofeedback for children with histories of abuse and neglect: Pilot study and meta-analytic comparison to other treatments. (open access)

Efficacy of neurofeedback for children with histories of abuse and neglect: Pilot study and meta-analytic comparison to other treatments.

This two-part study investigates the effectiveness of neurofeedback training for reducing behavioral problems commonly observed in abused/neglected children, and compares its efficacy to other treatment interventions with this population. Neuro-developmental sequelae of early relationship trauma are explored as an etiological framework for understanding disturbed affect-regulation, which appears central to the behavioral and emotional difficulties commonly experienced by this pediatric population. It is suggested that neurofeedback teaches children to self-regulate brain rhythmicity mechanisms, which in turn affects global improvements in behavior and mood. The pilot study utilizes records of 20 children removed from their biological homes by Child Protective Services. Children were assessed prior to treatment using the Child Behavior Checklist (CBCL) and the Test of Variables of Attention (TOVA), and again after 30 sessions of individualized, qEEG-guided neurofeedback training. A t-test analysis of pre- and post-scores was computed, and indicated significant improvements following treatment. A meta-analysis of existing literature on treatment interventions with abused/neglected children provides individual and aggregate effect sizes for 33 outcome studies with this clinical population, and contextualizes the results of the present pilot study within other empirically validated treatment modalities. Establishment of an overall effect size for treatment for this pediatric population provides a needed method …
Date: August 2008
Creator: Huang-Storms, Lark
System: The UNT Digital Library
Adolescent Self-Mutilating Behaviors: Experiential Avoidance Coupled with Imitation? (open access)

Adolescent Self-Mutilating Behaviors: Experiential Avoidance Coupled with Imitation?

Repetitive self-mutilation (RSM) has become increasingly prevalent among adolescents. Empirical research has pinpointed several correlates of this behavior, but the initiation and maintenance of RSM among adolescents are not well understood. The experiential avoidance model (EAM) proposes that self-mutilation is a behavior that allows for the avoidance or alteration of unwanted internal experiences, and that it is negatively reinforced with repetition. The current study explored the usefulness of the EAM as an explanatory theory for adolescent RSM, with the additional incorporation of issues of social context. Adolescents (N = 211) from three school-based samples completed self-report questionnaires. One-third of students reported at least one incident of purposeful, non-suicidal self-mutilation and 16% had engaged in self-mutilation repeatedly within the past 6 months. Both regression and group analyses indicated that adolescents who engage in RSM report greater psychological distress, a greater incidence of functionally equivalent behaviors, and greater exposure to self-mutilation among peers and/or in the media, when compared to their counterparts who have not engaged in RSM. Suicidal ideation/behaviors were consistently the strongest predictors of current self-mutilation behaviors. Clinical implications, limitations, and suggestions for future research are discussed.
Date: August 2008
Creator: Howe-Martin, Laura S.
System: The UNT Digital Library
The relationship between interpersonal dependency and therapeutic alliance: Perspectives of clients and therapists. (open access)

The relationship between interpersonal dependency and therapeutic alliance: Perspectives of clients and therapists.

Both interpersonal dependency and the importance of the therapeutic alliance to successful psychotherapy outcomes have been widely studied. However, these two areas of study rarely have been viewed conjointly despite the reportedly large number of clients with dependency who present for treatment. This study elucidated the relationship between interpersonal dependency and the therapeutic alliance. Additional hypotheses explored client-therapist agreement on alliance strength in relation to client interpersonal dependency. Participants were graduate student therapists (N = 26) and their individual psychotherapy clients (N = 40) in a training clinic at a large, southwestern university. Within their first three sessions of psychotherapy, participating clients told nine Thematic Apperception Test stories and completed structured self-report measures of adult attachment, social desirability, and psychological symptoms. Interpersonal dependency was scored from the TAT stories, using the TAT Oral Dependency (TOD) scoring system developed by Masling, Rabie, and Blondheim (1967) and Huprich (2008). Three sessions following initial data collection, participating clients and their therapists completed structured self-report measures of the therapeutic alliance. Analyses revealed that interpersonal dependency was not significantly associated with client and therapist alliance ratings or the congruence between client and therapist alliance ratings. However, specific scoring categories of the TOD were associated with …
Date: August 2008
Creator: Mitchell, Jessica L.
System: The UNT Digital Library
Health message framing : motivating cardiovascular risk factor screening in young adults. (open access)

Health message framing : motivating cardiovascular risk factor screening in young adults.

As the leading cause of death in the United States, coronary heart disease (CHD) is a growing public health problem, despite the fact that many risk factors for the disease are preventable, especially if addressed early in life. The purpose of the current study was to examine the effects of loss-framed versus gain-framed versus information-only health messages on both intention to attend and actual attendance at an appointment to get screened for CHD risk factors (i.e., hypertension, diabetes, and dyslipidemia). It was hypothesized that a population of young adults would be more likely to view screening for CHD risk factors as a low-risk, health-affirming behavior as opposed to a risky, illness-detecting behavior and would thus be more strongly influenced by gain-framed messages than loss-framed messages. Additional goals included the exploration of the extensively researched individual health beliefs of perceived threat (as defined by the health belief model) and health locus of control as they relate to message frames. One hundred forty-three undergraduate students were randomly assigned to either the loss-framed, gain-framed, or information-only control conditions. Framing manipulation checks revealed that participants failed to discern differences in the tone and emphasis of the experimental pamphlets. As a result, no tests of …
Date: August 2008
Creator: Link-Malcolm, Jessica
System: The UNT Digital Library
Neuropsychologic correlates of a normal EEG variant: The mu rhythm. (open access)

Neuropsychologic correlates of a normal EEG variant: The mu rhythm.

Although the mu rhythm is traditionally defined as a normal EEG variant, recent evidence suggests that mu may have functional significance in a variety of disorders such as autism, Parkinson's disease, and multiple sclerosis. While an increasing number of articles have focused on the blocking mechanism of mu in relation to various cognitive processes and disorders, few have examined the significance of a prominent mu rhythm in the background EEG. A few studies have examined the relationship between the mu rhythm and psychological disturbance, such as attentional and affective disorders. Increasing evidence suggests that EEG and qEEG variables may be useful in classifying psychiatric disorders, presenting a neurophysiological alternative to traditional symptom-based diagnosis and classification. Thus, the intention of the present study was to examine the relationship between neuropsychological variables, gathered from multiple assessment sources, and the presence of a prominent mu rhythm in the EEG. Results did not show a statistically significant difference between individuals with and without a prominent mu rhythm on the Test of Variables of Attention (TOVA); although individuals in the mu group showed a pattern of increased impulsivity and performance decrement over time. For adults, no significant differences were observed between groups on psychological variables …
Date: August 2008
Creator: Simms, Lori A.
System: The UNT Digital Library
Traumatic Brain Injury in Children and Adolescents: An Evaluation of the WISC-III Four Factor Model and Individual Cluster Profiles (open access)

Traumatic Brain Injury in Children and Adolescents: An Evaluation of the WISC-III Four Factor Model and Individual Cluster Profiles

Traumatic brain injury (TBI) is the leading cause of death and disability among children and adolescents in the US. Children and adolescents who sustain moderate and severe head injuries are much more likely to evidence significant deficits in neuropsychological functioning when compared with children with mild head injuries. Information about the recovery process and functional sequelae associated with moderate and severe head injuries remains limited, despite clear indications that children who experience such injuries typically exhibit notable deficits in intellectual functioning, particularly during the acute phase of recovery. Thus, the present study was conducted to augment research on intellectual functioning in children with moderate or severe head injuries. To accomplish this, the study first examined the proposed factor model of the WISC-III in children with moderate and severe TBI. Given high prevalence rates and similar trends in cognitive impairment, particularly within the frontal lobe structures (e.g., disrupted cognitive flexibility and divided attention), the study also examined this same factor model for a group of children with attention-deficit/hyperactivity disorder (ADHD) and compared it with the model fit from the TBI group. In the second phase of the study, both the TBI and AHDH groups were evaluated to determine if distinct WISC-III …
Date: August 2008
Creator: Shafer, Micheal E.
System: The UNT Digital Library
Association Between Folate, Vitamin B12 and Cognitive Performance in Demented Elderly. (open access)

Association Between Folate, Vitamin B12 and Cognitive Performance in Demented Elderly.

Dementia is prevalent among elderly people. As the world population ages, it is projected that the number of people affected by dementia may triple in the next 50 years. Over the last two decades, research has focused on identifying potentially modifiable risk factors in development and progression of dementia, such as vitamin B12 and folate. Results concerning the effects of low folate and vitamin B12 on cognitive performance are mixed. The main objective of the present study was to investigate the effects of vitamin deficiency on cognitive functioning in a clinical sample of elderly individuals with cognitive problems using a comprehensive neuropsychological assessment. A retrospective chart-review was performed on the 102 records of patients from the Geriatrics Clinic at the University of North Texas Health Science Center who presented with cognitive deficits. Charts were reviewed to obtain data on vitamin supplementation, vitamin status, history of chronic conditions and other biochemical data. The available database was used to obtain data on neuropsychological assessment. The study demonstrated mild association between vitamin B12 and folate status and cognitive deficits. There appeared to be a higher cut-off level that is above the traditionally used levels for vitamin B12 and folate deficiency concentrations at which …
Date: August 2008
Creator: Serova, Svetlana
System: The UNT Digital Library
Evaluation of the Quick Inventory of Depressive Symptomatology - Self-Report (QIDS-SR) in a spinal cord injury population. (open access)

Evaluation of the Quick Inventory of Depressive Symptomatology - Self-Report (QIDS-SR) in a spinal cord injury population.

Spinal cord injury (SCI) is an acute and devastating event that results in significant and permanent life changes for the individuals who are injured, as well as their families and friends. Depression has received more attention from clinicians and researchers than any other psychological issue among persons with SCI. Measurement of depression in this population has a variety of methodological issues, including inconsistent assessments used (self-report versus clinical interviews), varying definitions of depression, inclusion and exclusion of physical symptoms in the assessment process, and use of measures that do not represent DSM-IV criteria for major depressive disorder. The primary goal of this study was to evaluate the Quick Inventory of Depressive Symptomatology - Self-Report (QIDS-SR) and provide descriptive analyses of this measure with persons with SCI. Results showed that somatic symptoms were more frequently endorsed than psychological symptoms in this population. Additionally, scores on the QIDS-SR were significantly associated with a depression diagnosis in the patient's medical chart. However, QIDS-SR scores were not found to be correlated inversely with quality of life scores as predicted. The QIDS-SR was shown to have good internal consistency and convergent validity with patients with SCI. However, it failed to demonstrate construct validity. The QIDS-SR …
Date: August 2008
Creator: Reed, Kristin
System: The UNT Digital Library
Self-inflicted and other-inflicted intentional burns versus unintentional burns: A comparison study. (open access)

Self-inflicted and other-inflicted intentional burns versus unintentional burns: A comparison study.

Burn injuries are associated with significant mortality and morbidity. Intentional burn injuries are not well understood, and warrant study to improve adjustment and outcomes. The present study examined group differences between intentional and unintentional burn injuries, comparing individuals with self-inflicted (SIB; n=109) and other-inflicted (OIB; n=109) burns to an unintentional burn (UB) group. Compared to UB, those with intentional (SIB, OIB) burn injuries were more likely to be young, female, unmarried, unemployed, abuse substances, and have positive alcohol/drug screens at hospital admission. Individuals with intentional burns report more psychological distress, lower quality of life in some areas, and lower life satisfaction. When SIB and OIB were examined individually, OIB were more likely to be African American compared to SIB and UB. OIB also had more anxiety and paranoia than UB. SIB was more likely than OIB and UB to have had medical problems or psychiatric disorders and treatment prior to the burn injury. Those with SIB were 3 times more likely than UB to die in the hospital even after controlling for age, severity of burn, and inhalation injuries. Moreover, the SIB group had high rates of suicidal ideation at discharge and follow-up. Treatment implications for burn treatment providers were …
Date: August 2008
Creator: Ranucci, Melissa B.
System: The UNT Digital Library
The Effects of Sequential Versus Referential Montage Neurofeedback Amplitude Training on Qeeg Measures of Phase and Coherence. (open access)

The Effects of Sequential Versus Referential Montage Neurofeedback Amplitude Training on Qeeg Measures of Phase and Coherence.

An important clinical research question to be answered in the field of neurofeedback (NF) is whether amplitude training affects connectivity between cortical sites. This study hypothesizes that, following NF amplitude training, there will be a difference in QEEG coherence and phase measures between NF training done using referential montages and using sequential montages. The study examined case files of 16 adult clients from the University of North Texas Neurotherapy Lab who had received NF training that consisted of either referential or sequential placement amplitude training (no coherence training) and who received both pre- and post- treatment QEEGs. Sixty-eight percent of the cases consisted of referential placements, while 34% of the cases consisted of sequential placements. All frontal site phase and coherence abnormal z-scores at pre-treatment were converted to deviation scores and compared by general linear model analysis of variance to post-treatment deviation scores. Effect size r-values and eta square values indicate that differences between referential and sequential electrode placements after NF amplitude training are moderately high. This study shows that referential placements tend to increase phase scores and decrease coherence scores, while sequential placements tend to decrease phase scores and increase coherence scores.
Date: August 2008
Creator: Ramezani, Amir
System: The UNT Digital Library