The structural brain correlates of callous-unemotional traits in incarcerated male adolescents.

Youth with severe conduct problems impose a significant cost on society by engaging in high levels of antisocial and aggressive behavior. Within this group, adolescents with high levels of callous- unemotional traits have been found to exhibit more severe and persistent patterns of antisocial behavior than youth with severe conduct problems but normative levels of callous-unemotional traits. Existing neuroimaging studies, along with theoretical accounts of psychopathology, suggest that dysfunction within the paralimbic cortex and limbic system may underlie elevated levels of callous-unemotional traits.

Development of an expert-rater assessment of trauma history in a high-risk youth forensic sample.

Objective: Exposure to childhood trauma is particularly prevalent among incarcerated juveniles. Although there is a growing understanding of the detrimental impact trauma exposure can have on child and adolescent development, childhood maltreatment can be very difficult to accurately measure. Integration of self-report trauma histories as well as supplemental file reports of trauma exposure may provide the most accurate estimate of experienced trauma among youth in correctional settings.

Abnormal fronto-limbic engagement in incarcerated stimulant users during moral processing.

Rationale: Stimulant use is a significant and prevalent problem, particularly in criminal populations. Previous studies found that cocaine and methamphetamine use is related to impairment in identifying emotions and empathy. Stimulant users also have abnormal neural structure and function of the ventromedial prefrontal cortex (vmPFC), amygdala, and anterior (ACC) and posterior cingulate (PCC), regions implicated in moral decision-making.

Abnormal frontostriatal activity in recently abstinent cocaine users during implicit moral processing.

Investigations into the neurobiology of moral cognition are often done by examining clinical populations characterized by diminished moral emotions and a proclivity toward immoral behavior. Psychopathy is the most common disorder studied for this purpose. Although cocaine abuse is highly co-morbid with psychopathy and cocaine-dependent individuals exhibit many of the same abnormalities in socio-affective processing as psychopaths, this population has received relatively little attention in moral psychology.