Thesis (Ph. D.)--York University, 1998. / Includes bibliographical references (p. 188-213). Also available for purchase on the Internet.

Thesis (M.S.)--Ohio State University, 2005. / Includes bibliographical references (leaves 45-47). Available online via OhioLINK's ETD Center

Thesis (Ph.D.)--The University of Memphis, 2001. / Major Professor: Andrew W. Meyers. Includes bibliographical references.

Thesis (Ph.D.)--The University of Memphis, 2005. / Major Professor: Andrew W. Meyers. Includes bibliographical references.

Thesis (M.Sc.)--University of Calgary (Canada), 2004. / Adviser: David Hodgins. Includes bibliographical references.

Thesis (D.C.P. / M. Sc.)--School of Psychology, Faculty of Science, University of Sydney, 2007. / Submitted in fulfilment of the requirements for the degree of Doctor of Clinical Psychology/Master of Science to the School of Psychology. Title from title screen (viewed 15 January 2009). Includes bibliographical references. Also available in print form.

The aims of this chapter were fourfold. Firstly, the chapter aimed to contextualise this study by providing the reader with the relevant background information. Secondly, the chapter aimed to orientate the reader to the nature of this study, the research problem and aims, as well as provide motivation for this research. Thirdly, it presented an outline of the research process while situating the study within a theoretical framework. Fourthly, to provide the structure and outline of the chapters that is to unfold. Chapter Two will follow with an overview of the ecological perspective as it relates to human development and as the precursor to a more extensive discussion of the perspective of Urie Bronfenbrenner (1979). Bronfenbrenner‟s (1979) ecological outlook will take into consideration the constituents of influence in the lives of the participants of the present study.

The purpose of this investigation was to test the hypothesis that perceived responsibility is a major determinant of compulsive checking. Thirty participants recruited from the community through the local media, who met criteria for Obsessive Compulsive Disorder, received four conditions. In the low responsibility condition, perceived responsibility for an anticipated negative eventt was transferred to the experimenter. In contrast, in the high responsibility condition, perceived responsibility for an anticipated negative event was given to the participant. The remaining two conditions served as control conditions. Subjects were assessed before and after each experimental manipulation. Results suggest a causal connection between decreases in perceived responsibility and compulsive checking. Decreases in perceived responsibility produced decreases in several measures critical to compulsive checking. Results from increases in perceived responsibility were less clear. However, increases in perceived responsibility lead to increases in panic and likelihood of anticipated criticism. There were trends for increases in perceived responsibility to lead to increases in perceptions of discomfort experienced, urge to check, and severity of anticipated criticism. There was no relationship between variations in perceived responsibility and perceived extent of controllability over an anticipated negative event. Theoretical implications of the results and, in particular, the value of a cognitive analysis of compulsive checking, are discussed. / Arts, Faculty of / Psychology, Department of / Graduate

The purpose of this thesis was to investigate a specific cognitive theory of obsessions; namely, that unwanted and repugnant intrusive thoughts cause distress and persist when the person interprets their occurrence as highly personally significant and important. Two studies were conducted. In the first study, we described the development and undertook a validation study of a new scale of obsessional-compulsive symptoms, the Vancouver Obsessional Compulsive Inventory (VOCI). This measure was a necessary first step because established measures of obsessional-compulsive symptoms are inadequate in their assessment of a number of domains of obsessional-compulsive complaints, particularly obsessions. Our findings in samples of people with obsessivecompulsive disorder (OCD), people with other anxiety disorders or depression, community adults, and undergraduate students suggest that the VOCI is a promising new measure. In the second study, we investigated the role of interpretations of the personal significance and importance of intrusive thoughts in the occurrence of obsessions. Specifically, we hypothesized that people who have repugnant obsessions or frequent, distressing intrusive thoughts would interpret their intrusive thoughts as highly personally significant and important. Our hypotheses were, in general, supported. There was a clear relationship between beliefs and interpretations of the importance of thoughts and obsessions in both OCD and nonclinical samples. In addition, these beliefs and appraisals appeared to be specifically related to repugnant obsessions, rather than obsessive-compulsive complaints in general. This research represents one of the first attempts to evaluate the assertion that misinterpretations of intrusive thoughts are fundamental in the experience of obsessions. The development of the VOCI was a necessary first step in evaluating the relationship between interpretations of personal significance and particular obsessional-compulsive complaints. By demonstrating specific interpretations that are associated with clinical obsessions, we hope to refine cognitive-behavioural models of obsessions, and suggest ways in which current cognitive-behaviour therapy for obsessions can be sharpened and made more effective. / Arts, Faculty of / Psychology, Department of / Graduate

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