Mullan, Katarzyna; (2017) Developing a 'Profile' of Emergent Personality Disorder Among Adolescents: The Effect on Treatment Outcomes in the IMPACT Adolescent Depression Study. Doctoral thesis (D.Clin.Psy), UCL (University College London).

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Abstract

PART I is a systematic review of existing research investigating the relationship between peer victimisation in childhood and subsequent emergence of personality disorder (PD) in adolescence or adulthood. The quality of current evidence and key outcomes are considered, while potential mechanisms that could account for a peer victimisation-PD relationship are explored by drawing on theoretical models of PD development. PART II comprises of an empirical study involving secondary analysis of data from the IMPACT Trial (Goodyer et al, 2016). The study focuses on the development of an emergent Personality Disorder ‘profile’ among adolescents with a diagnosis of major depression, and subsequently exploring whether this profile predicts depression treatment outcomes for young people in terms of depression severity, rates of recovery and withdrawal from treatment. PART III is a critical appraisal of the research process overall. The experience of conducting the research is reflected upon, including how the project developed in the context of the author’s professional, intellectual and personal interests. Strengths and limitations of the research are considered as well as ideas for how it could be expanded in future.

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