Medicine and Health Sciences Commons^™

A Meta-Analysis Of The Prediction Of Violence Among Adults With Mental Disorders, Hing Po Lam

Dissertations, Theses, and Capstone Projects

The study of the risk for violence among persons with mental disorders has received substantial scientific attention over the past few decades; however, many uncertainties and controversies remain due to the wide disparities in the reported results. Using the state-of-the-art perspective of public health, a meta-analysis was conducted to clarify the ambiguities by synthesizing quantitative findings from 85 research reports (completed between January 1970 and May 2010) on violence risk assessment among mentally disordered adults. Results of this meta-analytic study revealed that the estimates of the prevalence of violence among the psychiatric population varied considerably from 1.1% to 78.4% with …

Characterization Of Somatosensory Processing In Relation To Schizotypal Traits In A Sample Of Nonclinical Young Adults, Maureen Patricia Daly

Dissertations, Theses, and Capstone Projects

A core feature of schizophrenia spectrum disorders (SSDs) is a basic sensory (e.g., visual, auditory) processing disruption, yet few studies have examined somatosensation. The current dissertation project examined somatosensory processes among individuals at varying degrees of psychometric risk for psychosis using tactile texture and spatial discrimination and letter recognition tasks. Differential patterns of associations of somatosensory abilities with schizotypal trait dimensions (positive, negative, disorganized), independent of anxiety and depressive symptoms, and the relative contributions of bottom-up (peripheral and morphologic features) versus top-down (error types) processing were examined. It was hypothesized that: 1) performance on somatosensory tasks would account for significant …

When Less Can Be More: Dual Task Effects In Stuttering And Fluent Adults, Naomi Nechama Eichorn

Dissertations, Theses, and Capstone Projects

The present study tested the counterintuitive hypothesis that engaging cognitive resources in a secondary task while speaking could benefit aspects of speech production. Effects of dual task conditions on speech fluency, rate, and error patterns were examined in stuttering and fluent speakers based on specific predictions derived from three related theoretical frameworks. Twenty fluent adults and 19 adults with confirmed diagnoses of stuttering participated in the study. All participants completed two baseline tasks: (1) a continuous speaking task in which spontaneous speech was produced in response to given prompts; and (2) a working memory (WM) task involving manipulations of WM …

Post-Treatment Drug Use, Recidivism, Analogous Behaviors, And Perceptions Of Fairness: Examining Whether Parolees With Low Self-Control Will Benefit From The Collaborative Behavioral Management Intervention, Sriram Chintakrindi

Dissertations, Theses, and Capstone Projects

This dissertation tested Gottfredson and Hirschi's (1990) low self-control theory and its relationship with post-treatment outcomes by conducting a secondary-data analysis of a randomized controlled trial on parolees (n=569) called the Step'n Out study (2005). The Step'n Out study (2005) compared the results of a control group (standard parole) with an experimental treatment for parolees called the Collaborative Behavioral Management (CBM) intervention which was designed to improve substance-use treatment outcomes, reduce drug use, and reduce recidivism for parolees participating in the study.

Low self-control theory states that individuals with character traits that are impulsive, risk-seeking, self-centered, and display volatile temper …

The Lived Experience Of Young Adult Burn Survivors' Use Of Social Media, Marie S. Giordano

Dissertations, Theses, and Capstone Projects

The purpose of this phenomenological study was to illuminate the meaning of social media use by young adult burn survivors. Five females and four males, aged 20-25, who sustained burns > 25%, were interviewed. Van Manen's (1999) phenomenological methodology provided the framework for this study. The meaning of the context of the lived experience is described in the five essential themes of identity, connectivity, social support, making meaning, and privacy. These young adult burn survivors, having experienced the traumatic effects of a burn during adolescence, use social media as a way of expressing their identity, while being cautious about privacy. Part …

Hot And Bothered: The Role Of Arousal And Rejection Sensitivity In Dual Process Sexual Decision Making For Gay And Bisexual Men, H Jonathon Rendina

Dissertations, Theses, and Capstone Projects

Dual process theories of decision making acknowledge the functioning of two distinct yet simultaneous processes termed System 1 and System 2. While System 1 relies more heavily on automatic and affective processing, System 2 relies more heavily on effortful and cognitive processing. Over the past several decades, many lines of research have shown the importance of System 1 in decision making and several prominent social psychological theories of interpersonal behavior, such as rejection sensitivity, rely on this dual distinction between affective and cognitive processing. Despite the prominence of dual process theories in many areas of psychology, the role of System …

Development Of A Model Of Participation Of Community-Based, Discretionary Activities By People Who Use Wheelchairs, Anita Perr

Dissertations, Theses, and Capstone Projects

This cross-sectional research analyzed an existing data set of 302 wheelchair users to identify the psychosocial predictors of participation in community-based, discretionary activities. Two defining elements of participation were studied: the extent of participation and satisfaction with participation. Descriptive analyses of the participants' demographic information and portions of four assessments were completed first. Regression analyses were then used to systematically eliminate potential covariates until the significant psychosocial covariates of the extent of and satisfaction with participation were identified. Perceived control over one's life and perceived reintegration to social function were found to predict the extent of participation. Perceived control also …

Using Otoacoustic Emissions To Evaluate Efferent Auditory Function In Humans, Simon Henin

Dissertations, Theses, and Capstone Projects

The auditory system continually adapts to changes in the acoustic environment over short periods of time. This fine-tuning of its dynamics is mediated in part by the medial olivocochlear (MOC) bundle, a neural feedback loop which aids in the regulation of cochlear micro-mechanics. The ability to measure the response of the MOC system in humans may provide significant insight into unique cochlear functions, such as its sharp frequency selectivity and wide dynamic range. In humans the efferent system can be investigated non-invasively using otoacoustic emissions (OAEs). However, how OAEs can best be used to evaluate efferent function, the pitfalls associated …

Neurophysiological Bases Of Frequency Discrimination In Children With Auditory Processing Disorder Or Specific Language Impairment, Christine Rota-Donahue

Dissertations, Theses, and Capstone Projects

The purpose of this study was to determine if 10-12 year old children with Auditory Processing Disorder (APD) or Specific Language Impairment (SLI) could discriminate three different frequency changes behaviorally and electrophysiologically. Behavioral frequency discrimination and event-related potentials were examined using a 1000Hz pure tone base frequency. Typically developing children and children with APD or SLI differed in in their detection of frequency changes: behavioral results were below chance level and the MMN amplitude was smaller in the impaired population. Slight differences between children with APD and children with SLI were also found that might shed light on the controversy …