Adolescence is a time of experimentation and exploration. For many young people, a feature of this developmental period is the initiation of substance use. Whilst the majority of young people do not go on to develop substance use problems, any substance use has potential for danger. The current body of literature on the prevention of substance use problems suggests that in order to advance understanding, researchers must adopt a risk-focused approach. There is a wide range of indices that have been cited as risk factors for the development of substance use disorders. Chapter 2 explores some of the aetiological models and literature on risk factors with specific reference to psychological wellbeing, studies highlighting comorbid relationships between adolescent mental health and substance use problems, and the functional value of substances in relation to well-being. Although attention to psychological risk factors has received increased press in the literature, the number of controlled, longitudinal studies is relatively small. A review of recent studies (Chapter 3) indicates that the presence of anxiety, depression, low self-esteem or behavioural problems such as delinquency represent psychological risk factors for the development of later substance use problems, however findings are inconsistent and many studies do not examine differential predictive utility by substance or gender. Thus, Study 1 of this research aimed to add to this body of work by exploring the prediction of alcohol, cannabis and other illicit substance use at age fifteen from key indicators of psychological well-being taken at age thirteen. The data from a normative sample of high school students indicated subtle differences in trajectory for young males and females and effects specific to different drug categories. Delinquency emerged as the most consistent predictor in both males and females. Low self-esteem was also an important indicator for future female marijuana use and marijuana intoxication and both male and female other illicit substance use. The findings highlighted the need for a greater contextual understanding of the relationship between delinquency, self-esteem and substance use. The second study sought to provide a deeper understanding of these issues by examining the perceived functional value of substances in relation to psychological wellbeing, by means of a qualitative study of a group of young people who had experienced problems with their substance use. Chapter 4 explores the limited phenomenological research in this area, with a focus on studies which have used methods of measurement that highlight the perspective of young people. Using a Consensual Qualitative Research approach, Study 2 builds on the drug type and gender contrasts noted in Study 1, and explores the interface between substance use and psychological well-being in depth using a clinical population. A number of key functions are identified by young people, with evidence of both convergence and divergence across drug categories (alcohol, cannabis, other illicit substances). Interviewees reported six functions common to all substances; social connectedness, improve affect, positive self-transformation, better coping with problems, fun and laughter, and feeling intoxicated. Nine additional functions were identified in relation to cannabis and other illicit substances. Several gender differences were also noted, with males tending to report more positive reinforcement from alcohol and cannabis, and young females more frequently describing benefits related to use of other illicit substances. The concluding chapter (Chapter 5) reviews the main findings across both studies and their implications for theory, practice, and future research. Overall, the findings of the research provide support for both problem behaviour and adaptive models of adolescent substance use, and indicate that young people are capable of reflecting on their substance use experiences. Incorporating the wisdom of young people into risk frameworks may enhance prevention, education and intervention efforts.

Abstract By 2020 the World Health Organisation has predicted that depression will be the largest cause of disease burden in the world (Ellen, 2002). This study investigated the effects of three interventions (Explanatory Style, Conflict Resolution, and Exercise) on the level of well-being of adolescents from the middle years of schooling. The research consisted of three studies. Study 1 involved the design of a Student Perception Questionnaire. The 28¬–item Student Perception Questionnaire was created to measure the outcomes of the three interventions and was trialled on 215 Middle School students. A Principal Components analysis with Varimax rotation was performed on the data retrieved from the respondents, and all items were retained on the questionnaire, although four factors did not show a .30 loading. Study 2, a Pilot Study, was conducted with three students to trial the interventions and measures in preparation for the final study. It included the collection of qualitative and quantitative data. The qualitative data was gained from interviews held with the students, parents, and teachers. Study 2 revealed that the interventions and the measures used to determine the effectiveness of the interventions would be suitable for Study 3. Study 3 was the full intervention that involved 25 students in an intervention group and six students in a no-intervention group. The 25 students were allocated to six groups that were engaged in a counterbalanced design study using the Explanatory Style, Conflict Resolution, and Exercise interventions. The group of six students was used as a comparison group. The results showed that students in the intervention group experienced a reduction of internalising behaviours such as withdrawal and depressive symptoms following all three interventions. The program as a whole was successful in reducing depressive symptoms and the interventions individually also significantly reduced depressive symptoms. The intervention group developed more optimistic thinking styles following the explanatory style intervention. Analysis of parent data revealed that parents of the intervention group were experiencing significant feelings of incompetence and guilt towards themselves as parents. In the members of the no-intervention group, having good social skills and a strong support network of friends and family were protective factors against depressive symptoms. The thesis showed that interventions can be used with adolescents that are effective in reducing depressive symptoms and do not have negative side effects, such as those associated with medications.

Thesis (M.A.)--University of Notre Dame, 2007. / Thesis directed by Christian Smith for the Department of Sociology. "December 2007." Includes bibliographical references (leaves 34-36).

Thesis (Ed. D.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains ix, 264 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 151-160).

Thesis (Ph. D.)--Ohio State University, 2008. / Title from first page of PDF file. Includes bibliographical references (p. 66-71).

Thesis (M.A.)--University of Notre Dame, 2009. / Thesis directed by David Sikkink for the Department of Sociology. "April 2009." Includes bibliographical references (leaves 31-35).

Thesis (Ph. D.)--University of Nevada, Reno, 2008. / "May 2008." Includes bibliographical references (leaves 134-140). Online version available on the World Wide Web.

Thesis (M.A.)--Bowling Green State University, 2008. / Document formatted into pages; contains viii, 84 p. Includes bibliographical references.

Thesis (M.S.)--University of Canterbury, 2007. / Typescript (photocopy). Includes bibliographical references (leaves 79-89). Also available via the World Wide Web.

Thesis (Ph. D.)--Ohio State University, 2008. / Title from first page of PDF file. Includes bibliographical references (p. 168-178).