Ida V Halvorsen & Sarah N. Olsen 
New Research on Personality Disorders [PDF ebook] 

This book provides leading research from around the globe on the topic of personality disorders which is formally referred to as a character disorder or a class of mental disorders characterized by rigid and on-going patterns of thought and action (cognitive modules). The underlying belief systems informing these patterns are referred to as fixed fantasies. The inflexibility and pervasiveness of these behavioral patterns often cause serious personal and social difficulties, as well as a general impairment of functioning.