Assessing the Proactive and Reactive Dimensions of Criminal Thought Process: Divergent Patterns of Correlation With Variable- and Person-Level Measures of Criminal Risk and Future Outcome

Family structure and delinquency: Antisocial cognition as a mediating mechanism

INTRODUCTION

This study investigates the direct and indirect effects of family structure on future delinquency using cognitive insensitivity and cognitive impulsivity as mediators.

METHODS

Employing a sample of 845 middle school students (406 boys, 439 girls), this study examined the effects of family structure on future delinquency and antisocial cognition as students progressed through the middle school years-that is, sixth through eighth grade.

RESULTS

Family structure, assessed as a three-level variable (two-parent home vs. stepparent/grandparent home vs. single-parent home) or as a two-level variable (two-parent/stepparent home vs. other), predicted delinquency 2 years later. Adding antisocial cognition-cognitive insensitivity and cognitive impulsivity-to the model produced significant indirect effects in which both cognitive insensitivity and cognitive impulsivity mediated the family structure-delinquency relationship.

CONCLUSIONS

Based on these results, it would appear that antisocial cognition plays a salient role in the association known to exist between family structure and later delinquency. The research and practical implications of these results include a call for greater use of a mediation methodology when studying the family structure-delinquency relationship and finding ways to assist families in creating control and moral values in their children.

SLC25A24 gene methylation and gray matter volume in females with and without conduct disorder: an exploratory epigenetic neuroimaging study

Conduct disorder (CD), a psychiatric disorder characterized by a repetitive pattern of antisocial behaviors, results from a complex interplay between genetic and environmental factors. The clinical presentation of CD varies both according to the individual's sex and level of callous-unemotional (CU) traits, but it remains unclear how genetic and environmental factors interact at the molecular level to produce these differences. Emerging evidence in males implicates methylation of genes associated with socio-affective processes. Here, we combined an epigenome-wide association study with structural neuroimaging in 51 females with CD and 59 typically developing (TD) females to examine DNA methylation in relation to CD, CU traits, and gray matter volume (GMV). We demonstrate an inverse pattern of correlation between CU traits and methylation of a chromosome 1 region in CD females (positive) as compared to TD females (negative). The identified region spans exon 1 of the SLC25A24 gene, central to energy metabolism due to its role in mitochondrial function. Increased SLC25A24 methylation was also related to lower GMV in multiple brain regions in the overall cohort. These included the superior frontal gyrus, prefrontal cortex, and supramarginal gyrus, secondary visual cortex and ventral posterior cingulate cortex, which are regions that have previously been implicated in CD and CU traits. While our findings are preliminary and need to be replicated in larger samples, they provide novel evidence that CU traits in females are associated with methylation levels in a fundamentally different way in CD and TD, which in turn may relate to observable variations in GMV across the brain.