Social and Behavioral Sciences Commons^™

Representation Of Reward And Risk In The Brain’S Motor System: Studies In Adolescents And Adults, Xingjie Chen

Doctoral Dissertations

In the neuroscience of economic decision making, the brain’s motor system has been ascribed a role in implementing choice actions. However, recent work has revealed canonical motor signals much in advance of choice action, possibly indicating their role in evaluation of decision options. In the current dissertation, we applied multimodal neuroimaging combining EEG and fMRI and used a novel paradigm that temporally separated the evaluation phase from the action phase of a decision-making process to investigate the mechanisms through which the motor control system contributes to decision making. Additionally, we further examined the developmental changes during the two phases of …

Television And Perceived Control: A Longitudinal Study Of The Cultivation Of Powerlessness Among Millenial Adolescents, Fernando Rodriguez

Doctoral Dissertations

Cultivation research has observed the long term subtle contribution of television mediated storytelling on the perceptions and beliefs of American viewers for fifty years. Early criticisms of cultivation argued the associations of viewing amount and fear of victimization were spurious and explained away by personality traits such as perceived control or authoritarianism. This project frames perceived control as a cognitive assessment of the personal ability to cope with life challenges. As a cognitive assessment, perceived control is assumed to be in constant revision. From a life-course approach, the symbolic cultural environment (which includes television) is seen as providing context and …

Examining Mediation And Moderation Effects Of Academic Motivation On The Relationship Between Disciplinary Events And Academic Performance In Secondary School, Cynthia Shuttleton

Doctoral Dissertations

Academic motivation is a key factor in students’ academic and behavioral success in school. Previous research has demonstrated strong relationships between disciplinary events and academic performance, as well as between academic performance and academic motivation. However, there is limited understanding of the relationship between academic motivation and disciplinary events, or how academic motivation, academic performance, and disciplinary events are related. The purpose of this study was to examine student self-ratings of their academic motivation in grades 9-12 in a public high school, and to investigate the associations and interactive relationships between these three variables. Participants (N=78) completed the …

Evaluating The Effectiveness Of Peer Engagement And Knowledge (Peak): A Community-Based Group Intervention For Youth In Hawai‘I, Jennifer T. T. Ho

Doctoral Dissertations

This study is a program evaluation with a mixed methods design that evaluated the effectiveness of Peer Engagement and Knowledge (PEAK), a six-week community-based group intervention that incorporates mindfulness-based interventions (MBIs) to address multiple health behaviors for multiracial youth in Hilo, Hawai‘i. A total of 51 youth, ages 12-23 years old, participated in this study which included pre-/posttest analyses of health risk factors such as substance use and depression and health promoting factors such as resilience, self-esteem, and mindfulness. Responses from two subsets of participants, who engaged in a focus group (n = 11) and composed gratitude letters ( …

Mindfulness And Self-Compassion: Exploring Pathways To Adolescent Emotional Well-Being, Karen Leslie Bluth

Doctoral Dissertations

Adolescents today are confronted with the compounded stressors of life in our high-pressured society and the cognitive, physiological, and emotional changes that are characteristic of this stage of development. As a result, they often struggle with self-doubt, leading to depression, anxiety, and maladaptive trajectories. Mindfulness, or paying attention in the moment in an intentional and purposeful way, has been reported to have positive effects on emotional well-being in adults, and shows promise for similar results in recent research with children and adolescents.

Moreover, the mechanisms through which being mindful achieves positive outcomes has only recently been explored, and has not …

A Model Of Quality Of Life And Emotional And Behavioral Functioning In Obese Children And Adolescents, Terry Oliver Thomas

Doctoral Dissertations

Review of literature indicates that obesity is on the rise nationally and obese individuals are at inherent risk for a variety of comorbid physical, psychological, and social problems which often result in significant functional impairment due to sequelae. Previous research suggests a meaningful association between obesity and greater internalizing difficulties typically manifested by symptoms of depression and anxiety (Faith, Matz, & Jorge, 2002; Scott et al., 2008; Stunkard, Faith, & Allison, 2003; Zhao, Ford, Dhingra, Strine, & Mokdad, 2009). In recent years, there has been emerging interest in exploring the relationship between obesity and individuals with externalizing problems including aggression, …