Psychology Theses and Dissertations
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This collection contains some of the theses and dissertations produced by students in the University of Oregon Psychology Graduate Program. Paper copies of these and other dissertations and theses are available through the UO Libraries.
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Thalmayer, Amber Gayle (University of Oregon, October 10, 2013)[more][less]Saucier, Gerard Thalmayer, Amber Gayle 2013-10-10T23:18:28Z 2013-10-10 http://hdl.handle.net/1794/13411 Psychotherapy is sought for diverse problems, and trust in its efficacy has led to increasing parity in insurance coverage for psychological services. But about half of those who begin therapy drop out prematurely, and only about half of those who complete therapy experience significant improvements. Here issues of efficacy measurement and the potential role of personality differences to better guide and assess treatment are explored. It is hoped this knowledge could lead to increased success rates. In terms of outcome measurement, the use and psychometric properties of the Outcome Questionnaire-45 (OQ-45), a popular, brief measure of psychological functioning and change, are assessed. Factor structure is tested in clinical (Study 1) and student (Study 2) samples. Alternative scoring models test whether dimensions of personality drive responses. Using bi-level models, including a total score factor, fit of the intended structure and three- and four-factor personality models was similar. A seven-factor problems model provided the best fit. About half the variance in OQ scores was accounted for by a Big Six personality inventory. The best items for assessing personality attributes in OQ-45 data are noted. Secondly, the relation between personality attributes and clinical presentation and outcomes is explored. Self-report scores on personality attributes predict virtually every life outcome and are highly associated with clinical presentation. Such attributes surely also play a role in treatment, but this association has not been widely studied. In Study 3 the relation of personality attributes to presentation, usage, and outcome is tested in a Couples and Family Therapy clinic sample (N = 222). Neuroticism was strongly associated with initial OQ-45 score, as were other scales (except Openness) to a lesser degree. Being older, more educated, and married predicted attending more sessions, and being older, female, and higher income predicted termination success. Personality scales did not play a role in either outcome. Honesty/Propriety and Neuroticism were, however, associated with steeper decrease in OQ-45 scores over time. en_US University of Oregon All Rights Reserved. Personality Correlates Personality Measures Psychological Assessment Psychometrics Structural Equation Modeling Treatment Outcomes Personality Attributes in Clinical Presentation, Measurement, and Treatment Electronic Thesis or Dissertation 2015-10-10 Ph.D. doctoral Department of Psychology University of Oregon
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Musser, Erica (University of Oregon, October 10, 2013)[more][less]Measelle, Jeffrey Musser, Erica 2013-10-10T23:18:05Z 2013-10-10T23:18:05Z 2013-10-10 http://hdl.handle.net/1794/13403 Attention-deficit/hyperactivity disorder (ADHD) likely involves fundamental alterations in self-regulation. These problems typically have been viewed as involving disruptions in the regulation of cognition and behavior. However, they also have been hypothesized to involve disruptions in emotion regulation. If so, parenting behaviors may take on renewed importance in ADHD, because parents play an essential role in children developing the ability to regulate their emotions independently. Three studies examined the association between emotion regulation and ADHD. Study 1 examined autonomic nervous system functioning during the experience and regulation of both positive and negative emotions. Study 2 examined coherence among autonomic and behavioral emotional systems. Finally, Study 3 examined the roles of parenting behavior, parental expressed emotion, and child autonomic nervous system functioning. In Studies 1 and 2, participants with ADHD and typically developing youth aged 7 to 11 years old completed an emotion induction and suppression procedure. For Study 3, participants completed a parent-child interaction task coded for parental behavior, and parents completed a five-minute speech sample coded for expressed emotion. Electrocardiogram and impedance cardiography were monitored for children across all three studies. The following results were notable. In Study 1, children with ADHD showed atypical autonomic inflexibility (i.e., elevated parasympathetic and sympathetic responding across task conditions). Additionally, children with ADHD were divided according to levels of prosocial behavior. Unlike other children with ADHD, children with very low levels of prosocial behavior displayed blunted autonomic activity across task conditions. In Study 2, specific patterns of reduced coherence among emotion regulatory systems (i.e., facial affective behavior and autonomic nervous system reactivity) were observed among children with ADHD. Finally, in Study 3, high levels of parental expressed emotion were associated uniquely with ADHD, even after controlling for comorbid symptoms. In contrast, parental intrusiveness was associated uniquely with child oppositional defiant and low prosocial behavior, even after controlling for ADHD symptoms. Furthermore, specific, different patterns of autonomic reactivity during the parent-child interaction were associated with ADHD and oppositional defiant behaviors. Across these studies, it is concluded that intrinsic and extrinsic emotion and emotion regulatory systems are disrupted among children with ADHD. en_US University of Oregon All Rights Reserved. Attention-deficit/hyperactivity disorder autonomic nervous system emotion regulation facial affect parenting behavior respiratory sinus arrhythmia A Multi-Method Investigation of Intrinsic and Extrinsic Emotion Regulation in Attention-Deficit/Hyperactivity Disorder Electronic Thesis or Dissertation Ph.D. doctoral Department of Psychology University of Oregon
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Moadab, Ida (University of Oregon, October 10, 2013)[more][less]Tucker, Don Moadab, Ida 2013-10-10T23:18:01Z 2013-10-10T23:18:01Z 2013-10-10 http://hdl.handle.net/1794/13402 The present study sought to investigate the effects of meditation practice on the neural mechanisms of attention and self-monitoring by comparing a group of experienced meditators to matched controls. Self-report measures of mindfulness and self-compassion were assessed to examine whether meditation-related improvements in attention and self-monitoring were linked to increases in these qualities. Thus, differences between groups (meditator versus control) on all variables and relationships among variables (attention, self-monitoring, self-compassion, and mindfulness) were explored. Results indicate that individuals with meditation experience showed enhancement in neural networks related to selective attention and attentional allocation, as evidenced by larger P1/N1 and P3b amplitudes, relative to controls. Meditators also showed improved self-monitoring of their errors, as indexed by enhanced Pe amplitudes, when compared to controls. Importantly, greater number of years of meditation experience was linked to larger Pe amplitudes, providing evidence that more practice with meditation was associated with greater error awareness. At the same time, meditators showed greater levels of mindfulness and self-compassion when compared to controls. Importantly, each of the neural indices was linked to greater levels of mindfulness and self-compassion. Specifically, self-kindness was correlated with each of these ERP components and to percentage of alpha power during meditation, and the mindfulness facet of observing fully mediated the relationship between meditation experience and P1 amplitudes. These findings suggest that the qualities that are enhanced with meditation are associated with enhancements in attentional control and awareness of errors. This study is an exciting step toward future intervention studies that combine multiple sources of information (self-report, neural measures, and behavior) to clarify the nature of the associations among these variables so that the mechanisms of mindfulness can be more fully understood. en_US University of Oregon All Rights Reserved. attention ERPs meditation mindfulness self-compassion self-monitoring The Role of Mindfulness and Self-Compassion in the Neural Mechanisms of Attention and Self-Monitoring Electronic Thesis or Dissertation Ph.D. doctoral Department of Psychology University of Oregon
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Sachet, Alison (University of Oregon, July 11, 2013)[more][less]Taylor, Marjorie Sachet, Alison 2013-07-11T20:12:27Z 2013-07-11T20:12:27Z 2013-07-11 http://hdl.handle.net/1794/12992 In everyday life, there are many situations that elicit emotional reactions to an individual's plight, leading to empathic thoughts and helping behaviors. But what if the observed situation involves fictional characters rather than real life people? The main goal of this dissertation was to investigate the extent that empathic thoughts and helping behaviors characterize children's responses to fictional social interactions, as well as to real ones. Another goal was to develop a new measure of prosocial behavior. In Study 1, 60 undergraduate students (36 female; Mage = 19.87, SDage = 4.46) played two computerized ball-tossing games, one with 3 co-players who were believed to be other students and one in which a ball was tossed between 3 walls. During the second half of each game, one of the co-players/walls was excluded by the other two co-players/walls; the participant's subsequent increase in passes to the excluded co-player/wall was recorded. Participants increased their passes to the excluded real co-player more than to the excluded wall, indicating that the increase in the Real Condition were attempts to help another person, rather than simply to even out the distribution of passes. Study 2 extended these findings to children and tested the relationship between reactions to real and fictional social interactions. Seventy-one 5- and 8-year-old children (36 females; 35 5-year-olds: Mage = 5 years, 8.2 months, SDage = 2.4 months; 36 8-year-olds: Mage = 8 years, 6.5 months, SDage = 2.9 months) played the computerized ball tossing game with (1) other children they believed to be real, (2) novel cartoon characters, and (3) walls. One of the co-players/walls was excluded in the second half of each game. Although children reported similar empathic reactions towards the excluded real and fictional co-players, they increased their passes to the excluded real co-player more than to the excluded fictional character or wall (controlling for individual differences in real life empathy). These results suggest that children's emotional reactions to what they experience in fiction and in real life are similar, but they take the behavioral steps to help another individual only when that individual is believed to be a real person. en_US University of Oregon All Rights Reserved. Empathy Fiction Imagination Pretend Play Prosocial Behavior Social Interaction Children's and Adults' Prosocial Behavior in Real and Imaginary Social Interactions Electronic Thesis or Dissertation Ph.D. doctoral Department of Psychology University of Oregon
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Lester, Ben (University of Oregon, July 11, 2013)[more][less]Dassonville, Paul Lester, Ben 2013-07-11T20:12:03Z 2013-07-11T20:12:03Z 2013-07-11 http://hdl.handle.net/1794/12985 A critical function of the human visual system is to parse objects from the larger context of the environment, allowing for the identification of, and potential interaction with, those objects. The use of contextual information allows us to rapidly locate, identify, and interact with objects that appear in the environment. Contextual information can help specify an object's location within the environment (allocentric encoding) or with respect to the observer (egocentric encoding). Understanding how contextual information influences perceptual organization, and the neural systems that process a complex scene, is critical in understanding how contextual information assists in parsing local information from background. In the real world, relying on context is typically beneficial, as most objects occur in circumscribed environments. However, there are circumstances in which context can harm performance. In the case of visual illusions, relying on the context can bias observers' perceptions and cause significant motor errors. Studying the illusory conditions under which perceptual/motor functions are "fooled", or breakdown, can provide valuable information about how the brain computes allocentric and egocentric frames of reference. The following studies examine how attentional (Chapters II & III) manipulations of visuospatial context affect components of observers' egocentric reference frames (e.g., perceived vertical or subjective midline) and how neural manipulations (Chapter IV) can modulate observers' reliance on contextual information. In Chapter II, the role of attentional control settings on contextual processing is examined. Chapter III addresses the question of how visuospatial shifts of attention interact with an egocentric frame of reference. Finally, Chapter IV examines the functional role of superior parietal cortex in the processing of egocentric contextual information. en_US University of Oregon All Rights Reserved. contextual processing egocentric coding reference frames visual attention visual illusions Attentional and Neural Manipulations of Visuospatial Contextual Information Electronic Thesis or Dissertation Ph.D. doctoral Department of Psychology University of Oregon
