Experimentally Testing the Effect of Parent-Adolescent Conflict on HIV Risk, and Investigation of a Neurobiological Moderator of This Effect

Human immunodeficiency virus (HIV) is a condition in which immune cells become destroyed such that the body may become unable to fight off infections. Engaging in risk-taking behaviors (e.g., substance use) puts people at heightened risk for HIV infection, with mid-to-late adolescents at increasing risk (Leigh & Stall, 1993). Environmental and neurological reasons have been suggested for increased risk-taking among adolescents. First, family-level precursors such as parent-adolescent conflict have been significantly associated with and may pose risk for engaging in substance use and risk-taking (Duncan, Duncan, Biglan, & Ary, 1998). Thus, parent-adolescent conflict may be an important proximal influence on HIV risk behaviors (Lester et al., 2010; Rowe, Wang, Greenbaum, & Liddle, 2008). Yet, the temporal relation between parent-adolescent conflict and adolescent HIV risk-taking behaviors is still unknown. Second, at-risk adolescents may carry a neurobiological predisposition for engaging in trait-like expressions of disinhibited behavior and other risk-taking behaviors (Iacono, Malone, & McGue, 2008). When exposed to interpersonally stressful situations, their likelihood of engagement in HIV risk behaviors may increase. To investigate the role of parent-adolescent conflict in adolescent HIV risk-taking behaviors, 49 adolescents ages 14-17 and their parent were randomly assigned to complete a standardized discussion task to discuss a control topic or a conflict topic. Immediately after the discussion, adolescents completed a laboratory risk-taking measure. In a follow-up visit, eligible adolescents underwent electrophysiological (EEG) recording while completing a task designed to assess the presence of a neurobiological marker for behavioral disinhibition which I hypothesized would moderate the links between conflict and risk-taking. First, findings indicated that during the discussion task, adolescents in the conflict condition evidenced a significantly greater psychophysiological stress response relative to adolescents in the control condition. Second, a neurobiological marker of behavioral disinhibition moderated the relation between discussion condition and adolescent risk-taking, such that adolescents evidencing relatively high levels of a neurobiological marker related to sensation-seeking evidenced greater levels of risk-taking following the conflict condition, relative to the control condition. Lastly, I observed no significant relation between parent-adolescent conflict, the neurobiological marker of behavioral disinhibition and adolescent engagement in real-world risk-taking behavior.

REVOLUTIONARY VIOLIN LITERATURE IN THE TRANSFORMATIVE PERIOD OF THE 20TH CENTURY, 1900-1970

In satisfaction of requirements for a Doctor of Musical Arts degree at the University of Maryland, College Park, three recitals were given consisting of works of the early 21st Century European composers. The works performed on these recitals showcase a variety of compositional styles that explore different qualities of the violin. The purpose of this project was to demonstrate how the war and conflict in Europe and attendant radical cultural and social developments affected these composers. The first recital program includes: Sonata for Violin and Cello and Piece en Forme de Habanera by Maurice Ravel; Op. 30 Mythesfor Violin and Piano by Karol Szymanowski; Concertina for Violin and Piano and Sonata No.2 for Violin Solo by Grazyna Bacewicz. The second recital program consists of: Sonata for Violin and Piano by Leos Janacek; Quartet for the End of Time: movement VIII "Louange a l'Immortalite de Jesus" by Oliver Messiaen; Sonata for Solo Violin by Erwin Schulhoff; and Passacaglia & Fuga for String Trio by Hans Krasa. The third recital highlights the works of Russian composers: Sonata for Violin and Piano Op.134 by Dmitri Shostakovich; and Violin Sonata No.2 in D major Op. 94 by Sergei Prokofiev. These composers represent individual, distinct and fascinating adaptation to events beyond their control as well as their power of transformation. The first recital was performed in collaboration with Hsiang-Ling Hsiao on piano and Gozde Yasar on cello. The second recital was given with Hsiang-Ling Hsiao on piano, Gozde Yasar on cello, and Asli Gultekin Ozek on viola. The third recital was performed with David Ballena on piano. The recitals were recorded on compact discs and are archived within the Digital Repository at the University of Maryland (DRUM).