RT Article T1 Impact of Family Violence on Antisocial Behaviors in Two Developmental Periods: the Investigation of the Moderating Role of a Haplotypic Serotonergic Polygenic Score JF Journal of developmental and life-course criminology VO 9 IS 4 SP 695 OP 719 A1 Langevin, Stephanie A1 Boivin, Michel A1 Bouliane, Mélanie A1 Côté, Sylvana A1 Tremblay, Richard E. 1944- A1 Turecki, Gustavo A1 Vitaro, Frank A1 Ouellet-Morin, Isabelle A2 Boivin, Michel A2 Bouliane, Mélanie A2 Côté, Sylvana A2 Tremblay, Richard E. 1944- A2 Turecki, Gustavo A2 Vitaro, Frank A2 Ouellet-Morin, Isabelle LA English YR 2023 UL https://krimdok.uni-tuebingen.de/Record/1878572156 AB Children exposed to family violence, such as child-directed and child-witnessed parental violence, tend to manifest higher levels of antisocial behaviors later in life. Genetically informed studies additionally show that antisocial behaviors are partly inherited. While there is a consensus about the polygenic nature of antisocial behavior, it remains unclear as to whether the differences present at the DNA level moderate the impact of parental violence on antisocial behaviors. This study tested whether children who were the victims of, or who witnessed, family violence exhibit more antisocial behaviors once they reach adolescence and early adulthood, and whether this risk varied according to a serotonergic polygenic index. Participants were 410 male members of the Quebec Longitudinal Study of Kindergarten Children. Child-directed and child-witnessed parental violence and participants’ antisocial behaviors were self-reported or assessed through semi-structured interviews. Previously derived haplotype-based polygenic indexes mapping to 11 serotonergic genes were used. Participants who were the victims of, or witnessed parental violence, were generally at higher risk of manifesting antisocial behaviors. Findings also offered a partial support to prior evidence for gene-environment interactions in some, but not all antisocial outcomes. Participants who were victims of child-directed parental violence and carried lower serotonergic risk were at higher risk of manifesting property or violent crimes in adulthood, supporting the Social-push model. Alternatively, participants who witnessed intra-parental violence were at higher risk of exhibiting symptoms of conduct disorder and antisocial personality disorder if they carried a higher number of haplotypic risk alleles, lending support to the Diathesis-stress model. This study extends prior work by emphasizing the need to separately investigate distinct forms of family violence and to use indicators of risk capturing variants present across multiple genes to better understand their independent and joint contributions to antisocial behaviors over the life course. K1 Gene-environment interplay (GxE) K1 Candidate genes K1 Family Violence K1 Polygenic score K1 Serotonergic genes K1 Antisocial behaviors DO 10.1007/s40865-023-00239-w