Psychology Theses and Dissertations

Permanent URI for this collection

https://hdl.handle.net/1794/995

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.

Browse

Browsing Psychology Theses and Dissertations by Subject "Adolescents"

Now showing 1 - 4 of 4
  • Thumbnail Image
    ItemOpen Access
    The “Ignored Common Factor”: The Role of Expectancy in the Treatment of Adolescent Depression
    (University of Oregon, 2011-09) Murakami, Jessica L., 1980-
    Since Rosenzweig's "Dodo Bird Verdict" in 1936, the "common" versus "specific" factors debate has continued to polarize the field of psychotherapy. Treatment expectancy is an important but often overlooked common factor. The current study investigated the role of treatment expectancy in the Treatment of Adolescents with Depression Study (TADS). Four-hundred three adolescents ( M age =14.62, SD =1.56) filled out the Treatment Expectancy for Adolescents (TEA) measure prior to treatment randomization to one of four treatments: fluoxetine (FLX), cognitive behavior therapy (CBT), their combination (COMB), and placebo (PBO). Adolescents randomized to CBT or COMB also filled out the CBT Rationale Acceptance and Expectation for Improvement (C-RAEI) form during their second session of CBT. Before finding out their treatment assignments, adolescents endorsed higher treatment expectancies for COMB than CBT and medication only. Family income levels below $75,000 and higher levels of depression severity, hopelessness, and suicidality were associated with lower expectations for improvement with CBT. The presence of a comorbid anxiety disorder diagnosis was associated with lower expectations for medication without CBT. Separate random coefficients and logistic regression models identified treatment expectancy as a predictor of outcome for three primary outcome measures in TADS, irrespective of treatment assignment. Severity of depression moderated this relationship; mild to moderately depressed adolescents appeared to be more sensitive to the effects of treatment expectancy than marked to severely depressed adolescents. The opposite results were found for the self-rated outcome measure in TADS based on the C-RAIE. For marked to severely depressed adolescents assigned to CBT or COMB, acceptance of treatment rationale and expectancy for improvement were associated with treatment response. These results suggest that treatment expectancy is an important common factor of treatment for mild to moderately depressed adolescents prior to treatment initiation, although it may be especially important for initially skeptical, marked to severely depressed adolescents to "buy in" to treatment after treatment initiation. Treatment effects were still found after controlling for the effects of treatment expectancy on outcome. It seems that both the "common" factor of treatment expectancy and the "specific" factor of treatment assignment contributed to outcome in TADS.
  • Thumbnail Image
    ItemOpen Access
    Observed ethnic-racial socialization and early adolescent adjustment
    (University of Oregon, 2008-06) Yasui, Miwa
    This dissertation examined how cultural influences transmitted within the familial context impact the psychological adjustment of ethnic minority youth through the development of an observational measure of ethnic-racial socialization. Specifically, a behavioral observational paradigm and companion coding system were developed to examine ethnic-racial socialization processes among 140 American Indian, African American and European American adolescents and their families. Despite its interactional nature, to date there are no observational measures of ethnic-racial socialization, highlighting the important contributions of this study. This study was conducted in a series of phases. Phase I consisted of measurement development through use of qualitative data. Qualitative information from cultural informants was incorporated to develop two observational paradigms (observed family discussions on Family Culture and Coping with Discrimination) and an accompanying coding system. Phase II examined the underlying factor structure of this observational measure through confirmatory and exploratory factor analytic techniques. The Discrimination Paradigm derived the ethnic-racial socialization dimensions: (a) Proactive Preparation, (b) Racial Awareness, (c) Promotion of Mistrust, and (d) Other Group Orientation. The Family Culture paradigm derived: (a) Cultural Socialization, (b) Ethnic Heritage Exploration, (c) Family Centeredness, and (d) Spiritual Involvement. In Phase III correlational analyses supported convergent and ecological validity of the observed dimensions for American Indian and African American youth, but not European American youth. Phase IV examined the mediational effects of the observed measures, suggesting that among American Indian and African American youth, observed ethnic-racial socialization is central to the relationships between family context, discrimination, ethnic identity and youth adjustment. In Phase V, moderation effects indicated that only for American Indian youth, observed ethnic-racial socialization significantly reduced the impact of discrimination on youth adjustment. Last, Phase VI analyses revealed that observed dimensions uniquely contributed to adolescent problem behavior above and beyond the effect of discrimination and familial contextual factors among American Indian and African American youth. In sum, these findings support the reliability and validity of the observed ethnic-racial socialization measures, and suggest its promising capability to efficiently capture important, observable, transactional familial processes of ethnic-racial socialization that are integral to the development of cultural resilience.
  • Thumbnail Image
    ItemOpen Access
    Relations Among Theory of Mind and Executive Function Abilities in Typically Developing Adolescents and Adolescents with Asperger's Syndrome and High Functioning Autism
    (University of Oregon, 2012) Oswald, Tasha; Oswald, Tasha; Moses, Louis
    The aim of the current study was to bring greater clarity to our understanding of the relation between theory of mind (ToM) and executive function (EF), specifically working memory (WM) and inhibitory control (IC), during typical adolescent development and of the specific nature of impairments in ToM and EF in the cognitive profile of individuals with Asperger's Syndrome and High Functioning Autism (AS/HFA). In total, 80 participants, half typically developing (TD) and half with AS/HFA, participated in the study. TD participants were matched to the participants with AS/HFA on chronological age and gender. Participants were tested across two test sessions, approximately one year apart. For Session 1, the TD participants ranged in age from 10.1 to 17.9 years (M = 14.68, SD = 2.05), and the participants with AS/HFA ranged in age from 10.2 to 17.9 years (M = 14.64, SD = 2.19). I tested the participants on a ToM battery, consisting of an emotional perspective taking measure, the Mind in the Eyes Test, and two cognitive perspective taking measures, the Advanced ToM Vignettes, designed by the researcher, and Happé's Strange Stories. In addition, an EF battery was administered, containing a Reading Span Task, Change Detection Task, and Flanker Task, which assessed verbal WM, visual WM, and IC, respectively. Firstly, I found that older children and adolescents with AS/HFA, especially the girls with AS/HFA, performed worse on ToM measures tapping cognitive perspective taking relative to TD peers. Secondly, I observed that ToM and EF continue to develop during later childhood and adolescence as part of both typical and atypical development. Thirdly, I found that verbal WM and IC were more strongly associated with ToM in the AS/HFA group, indicating that individuals with AS/HFA may require more executive resources for ToM reasoning. Based on my results, I suggest that ToM and EF are still developing during later childhood and adolescence in both TD individuals and individuals with AS/HFA, indicating that the brain regions supporting ToM and EF processing are still plastic and can therefore be targeted for intervention.
  • Thumbnail Image
    ItemOpen Access
    Susceptibility to Peer Influence, Social Exclusion, and Adolescent Risky Decisions
    (University of Oregon, 2016-02-23) Peake, Shannon; Pfeifer, Jennifer
    Understanding the mechanisms of poor decision making and risk behavior in adolescence is an important goal. Two important features of adolescence relevant to these concerns are the saliency of social acceptance and increased frequency of making decisions in the company of peers. The current study examines individual differences in susceptibility to peer influence and the effect of positive and negative social contexts on adolescent decision making. Fifty-five adolescents (11.2-17.6 years of age) completed measures of social susceptibility and risk behavior and subsequently underwent functional magnetic resonance imaging while completing a simulated driving game in three conditions: alone, while being watched by peers, and after an event of social exclusion. Individual differences in susceptibility to peers predicted a decrease in adaptive decision making following exclusion by peers. Adolescents with greater self-reported engagement in substance use, risky sexual behavior, and aggressive behavior performed worse on the game following social exclusion. Neuroimaging results showed relatively greater activation in the striatum during risky decisions (Go through a yellow light) in the peer condition compared to the social exclusion condition. Whole-brain and region of interest analyses revealed a significant decrease in striatal activity during Go decisions following social exclusion. Adolescents who were more susceptible to peer influence and engaged in more risk behavior evidenced the greatest decreases in striatal activity after social exclusion. Results suggest that susceptibility to peer influence interacts with the experience of social exclusion to produce maladaptive decision making in adolescents. More broadly, the results demonstrate that individual differences and social contexts are both important factors affecting adolescent decisions and that changes in momentary levels of social acceptance can influence the quality of adolescent decisions in social situations. These findings suggest that the explanatory power of existing models of adolescent decision making could be extended by exploring individual differences in decision making within and across social contexts, including peer influence and social exclusion, to provide a more comprehensive account of which adolescents are prone to making poor decisions and when.