Personality and psychotic disorders

The subject of the current thesis is the contribution of normal personality traits as conceptualized by the Five-Factor Model of personality (FFM) to the manifestation of illness in patients with psychotic disorders. These studies were part of the Dutch national Genetic Risk and Outcome of Psychosis (GROUP) study.
The main objective of this thesis was to examine whether normal personality traits as conceptualized by the FFM contribute to the vast heterogeneity found in expression of psychotic disorders. Second, we aimed to better understand how FFM personality traits may be connected to symptom expression in patients with psychotic disorders, i.e. to relate our findings to the different models of inter-relations between personality and psychopathology.