More than six years after the themed issue 'Biologic factors of aggressive behaviour' (in 2000), another special issue on the relationship between biology and criminology has been published, inspired mainly by the many studies that have since been carried out into biological factors of psychopathy, aggression, antisocial behaviour and addiction. New techniques have enabled general knowledge on brain structure and function to develop quickly. Knowledge in the field of genetics and gene environment interactions (epigenetica) is also exhibiting continued growth. Index SummariesInternetsite