Five-Factor Model of Personality & Internalising Psychopathology: New Contributions for Evaluation and Aetiological Models

Abstract

This doctoral dissertation aims to increase the knowledge of relevant factors involved in the aetiology of internalising psychopathology, and to improve their assessment. To this end, five studies have been carried out. The two former ones provide the first evidence on the psychometric properties of the Spanish version of Depression and Anxiety Severity Measures of DSM-5 cross-sectionally and longitudinally. The third study provides new evidence on the structure of the Ruminative Thought Style Questionnaire cross-nationally and longitudinally. The last two studies aim to provide new evidence on the relationship between distal (i.e., neuroticism) and proximal (i.e., rumination) variables to depressive symptoms and suicidal ideation, cross-nationally and longitudinally. Overall, these studies provide new relevant psychopathology instruments for our sociocultural context. They also depict aetiological pathways in which personality characteristics interplay with cognitive mechanisms in explaining the development of depressive symptoms and suicidal thoughts.