Correction: Neurobiological roots of psychopathy.

A correction to this paper has been published and can be accessed via a link at the top of the paper.

Neurobiological roots of psychopathy.

Psychopathy is an extreme form of antisocial behavior, with about 1% prevalence in the general population, and 10-30% among incarcerated criminal offenders. Although the heritability of severe antisocial behavior is up to 50%, the genetic background is unclear. The underlying molecular mechanisms have remained unknown but several previous studies suggest that abnormal glucose metabolism and opioidergic neurotransmission contribute to violent offending and psychopathy.

Psychopathic traits in a representative sample of Finnish male prisoners.

Background: The psychopathic traits measured with the Hare Psychopathy Checklist-Revised (PCL-R) in a representative national prisoner sample have not been studied in Finland before. It has been unclear whether there could occur some national differences or whether the PCL-R can be used for assessing psychopathic traits in the Finnish forensic settings.

Aims: Our aim was to study the distribution of psychopathic traits in the Finnish male prisoners as well as the correlations of these traits with DSM-IV disorders and to compare the sample with similar samples of Europe and America.