BIS/BAS Variables as Moderators of the Rumination-Intimate Partner Violence Link

Although cognitive rumination is related to violence perpetration, not all people who ruminate become violent. Four personality variables—impulsivity, anxiety, anger-in, anger-out—were tested as possible moderators of the link between the tendency to ruminate and the frequency of intimate partner violence (IPV). Variables related to the Behavioral Activation System (anger-out and impulsivity) were predicted to strengthen the rumination-IPV link; whereas measures related to the Behavioral Inhibition System (anger-in and anxiety) would suppress this link. As predicted, anger-out, anger-in, and impulsivity moderated the relation between rumination and IPV. No evidence was found for suppressor variables. Thus, appetitive drives appear to amplify the effect of rumination on violence. Clinically, therapeutic techniques that address rumination, anger, and impulsivity may help to reduce IPV risk.     

Sudden infant death syndrome (SIDS)--standardised investigations and classification: recommendations

Sudden infant death syndrome (SIDS) still accounts for considerable numbers of unexpected infant deaths in many countries. While numerous theories have been advanced to explain these events, it is increasingly clear that this group of infant deaths results from the complex interaction of a variety of heritable and idiosyncratic endogenous factors interacting with exogenous factors. This has been elegantly summarised in the "three hit" or "triple risk" model. Contradictions and lack of consistencies in the literature have arisen from diverse autopsy approaches, variable applications of diagnostic criteria and inconsistent use of definitions. An approach to sudden infant death is outlined with discussion of appropriate tissue sampling, ancillary investigations and the use of controls in research projects. Standardisation of infant death investigations with the application of uniform definitions and protocols will ensure optimal investigation of individual cases and enable international comparisons of trends.     

Aggression, psychopathy and brain imaging — Review and future recommendations

Violent behavior appears to result from a complex web of interacting genetic as well as environmental factors. Psychopathy is a strong predictor for relapse in violent acts. The current review shed light on rapidly expanding knowledge in brain imaging related to violent behavior and psychopathy. A literature search was performed in PubMed, Cochrane and PsycInfo combining the key words: mentally disordered offender/aggression/violence/ crime/forensic psychiatry/brain imaging neuroimaging/fMRI/MRI/PET/SPECT/lack of empathy/psychopathy and antisocial personality disorder. The reviewed material, which consisted of 48 articles, indicates a rather strong consensus on the connection between dysfunctional parts of the frontal and temporal lobes and violent antisocial behavior and psychopathy. In future studies, it would be useful to focus on the limbic system and to investigate which parts of the frontal lobes and cerebral networks that are of interest in the psychopathic personality. Moreover, the reviewed material highlights some of the methodological difficulties in this area of research such as selection bias in the recruitment of patients, inadequate matching of control subjects, and sometimes incongruous results. In the future we hope that brain imaging can be used to map biological deviations in different offenders in order to try to learn more about the different mechanisms behind violent behaviors.