Indiana University-Purdue University Indianapolis (IUPUI) / Introduction: Externalizing disorders such as attention deficit hyperactivity disorder (ADHD), conduct disorder (CD), and oppositional defiant disorder (ODD) have a high prevalence rate in both children of alcoholics and in those with prenatal alcohol exposure (PAE). These disorders are also predictors of alcohol dependence (alcdep), heritable, and share an underlying genetic liability with alcdep. Furthermore, a mother who drinks while pregnant is likely to be alcohol dependent (AD), and vice-versa. This study incorporated these factors into one model, including as well as a measure of broad genetic risk for ADHD and alcdep to test for the contributions of these effects simultaneously. An independent sample was used to confirm the results for PAE and broad genetic risk. The hypothesis is that PAE will increase the risk to ADHD but not to CD or ODD. Methods: Each of these factors was evaluated independently to test if that effect on its own, significantly contributed to each disorder. Another model included several demographic covariates, to determine which of these environmental effects also contributed to the disorder. The final model for each disorder included environmental effects along with the primary effects of interest. Results: PAE resulted in increased risk for the inattentive (INATT) sub-type of ADHD and conduct disorder (CD) in the discovery sample and for the hyperactive-impulsive (HYPIMP), INATT and CD in the replication sample. PAE and the PAE*maternal alcohol dependence interaction increased the risk for ADHD and INATT. A broad genetic risk for ADHD was associated with all disorders except HYPIMP in the replication sample. Conclusion: This study further supports the trending evidence of a unique etiology of ADHD in those with PAE, and more specifically, that INATT and HYPIMP are affected according to two different mechanisms of action, independent of a genetic contribution due to either ADHD or alcohol dependence, both of which also were associated with a risk for INATT. The contribution of PAE to INATT and CD were the only consistent results across all definitions of alcohol exposure and in both datasets, indicating that PAE is a veritable risk for INATT and CD.

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Student Number : 0102295F - MA research dissertation - School of Psychology - Faculty of Arts / A review of trauma literature indicated that in comparison to PTSD there is very little research into the effects of secondary trauma, especially with regards to trauma workers. The present study explored the psychological impact of trauma workers who work with victims of violent crimes. Both Figley’s (1995) trauma transmission model and Dutton and Rubenstein (1995) ecological model were used to develop a refined trauma model for trauma workers in South Africa, which formed the theoretical basis for the current research. This model looked at the relationships between specific key variables (level of exposure to traumatic material, empathy, and level of perceived social support) and secondary traumatic stress, and their interrelationship. In the present study relevant information was gathered from volunteer trauma workers (N=64) using self-report measures. Data was analysed using the following statistical techniques: Descriptive statistics, Pearson’s Correlation Coefficients, Two Independent Sample T-Test, and a Moderated Multiple Regression. Results indicated that the trauma workers, to some extent, experienced symptoms of secondary traumatic stress. In addition, it was found that previous exposure to traumatic material, level of empathy, and level of perceived social support have a significant relationship with secondary traumatic stress. Social support was not found to have a moderating effect, but empathy emerged as a consistent moderator between the trauma workers previous exposure to traumatic material and secondary traumatic stress. Results also revealed that ones qualification made no difference in the development of secondary traumatic stress. In summary, this study expanded on knowledge into the effects of criminal violence in South Africa, particularly with concern to trauma workers, a population often ignored. This study was considered to be a contribution to trauma literature as it provides much needed empirical evidence.

Obsessive-compulsive disorder (OCD) is relatively common (Ruscio, Stein, Chiu, & Kessler, 2010) and leads to significant functional impairment (World Health Organization, 2001). Research suggests that exposure and response prevention (EX/RP) is efficacious for reducing OCD symptoms (NICE, 2006); however, standard outpatient EX/RP does not effectively alleviate symptom severity among a substantial proportion of OCD patients (Abramowitz, 2006). Intensive EX/RP programs have been developed to address the needs of treatment-refractory OCD patients (Veale et al., 2016). While evidence from effectiveness studies suggests that intensive EX/RP programs lead to significant reductions in OCD symptom severity, a portion of patients do not demonstrate improvement in response to intensive treatment (e.g., Björgvinsson, Hart, et al., 2013; Boschen, Drummond, & Pillay, 2008). These findings underscore the need to identify reliable predictors of OCD patient response to intensive EX/RP to help target clinical and research efforts toward improving treatment outcomes for those least likely to respond to current treatment modalities. Therefore, the proposed study evaluated distinct trajectories of OCD symptom change across six-weeks of intensive treatment and examined factors that predict membership in those trajectory groups. Results suggested that three latent subgroups of OCD patients emerged with one demonstrating symptom relapse during intensive treatment. Further, OCD symptom severity was the only baseline factor that predicted latent-class membership. Implications and future directions of research are discussed.

Guidelines for conducting effective exposure treatment with anxious youth emphasize content (e.g., preparation for and processing of the exposure) and process (e.g., collaboration and youth involvement) variables as important elements of exposure task sessions, but there is a paucity of research examining these guidelines. Using multiple regression, this study evaluated the extent to which independent observers' ratings of process (i.e., collaboration and youth involvement) and content variables (i.e., preparation for and processing after the exposure task) were predictive of treatment outcome in a sample of 61 anxiety-disordered youth. Results indicated that collaboration between the youth and therapist significantly predicted improvement in treatment outcome as measured by youth-, parent-, and teacher-reports. Youth involvement in exposure task sessions predicted improved outcome as measured by teacher-report. Contrary to expectation, preparation for exposure did not predict outcome, but post-event processing of the exposure task was significantly predictive of clinician-rated diagnostic outcome. Exploratory analyses suggest that treatment responders were more likely to be assigned between-session exposure tasks as "homework" and were more likely to be rewarded for their efforts in session. Treatment implications and future directions are discussed. / Psychology

Historically, high school chemistry has been the predominate venue for introducing food science curriculum to students. The purpose of this research was to determine if high school students in a biology class without a chemistry background could comprehend eight basic food science principles equally as well as students in a chemistry class that were taught the same principles. This study assessed baseline knowledge of high school students, determined the effect of food science-based lessons on baseline knowledge and level of understanding, and determined the effect of food science-based lessons on students’ awareness of and interest in food science. Baseline knowledge and awareness of food science was low. Food science-based instruction resulted in higher post-test scores. Results indicated no differences between biology and chemistry and supported the idea of further incorporating a food science curriculum into high school biology.

Climate change is anticipated to raise overall temperatures in the twenty-first century and is likely to intensify population exposure to heat during the warm season and, as a result, increase the risk of heat-related illnesses and deaths. While earlier studies of heat exposure and related health impacts generally focused on the acute effects of short-term exposure indicated by high daily temperature or several days of very hot weather, recent research has suggested that small changes in seasonal average temperature over a long period of time is likely to pose significant health risk as well. Using downscaled climate projections under three Representative Concentration Pathways emission scenarios, high-spatial-resolution population data, and the latest population projections by the United Nations, we aim at projecting future changes in long-term population exposure to summer heat across China in the mid- and late-twenty-first century resulting from global climate change. As the impacts of population growth are often overlooked in projecting future changes in heat exposure, we estimated changes in population-weighted average temperature in the warmest quarter over two future 20-year time periods and compared them with changes in temperature only. Our analysis shows that, nationally, population-weighted average temperature in the warmest quarter is projected to increase by 2.2 °C relative to the current situation in the 2050s and by 2.5 °C in the 2070s, as the result of climate change and population growth. Despite the foreseeable population stabilization in China, changes in population-weighted temperature are projected to be higher than changes in temperature itself for the majority of the 33 provinces (ranging from 0.02 °C to 1.27 °C, or 1% to 126% higher in the 2050s and from 0.02 °C to 1.16 °C, or 1% to 73% higher in the 2070s), with the largest differences mainly occurring in Western China. The impact of urbanization is projected to be relatively insignificant. Our findings provide evidence of possible underestimation of future changes in long-term exposure to summer heat if the effect of population growth is not factored in.

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