BackgroundIntimate partner violence (IPV) affects 25% of children under the age of five worldwide, yet the impact of perinatal IPV and its underlying mechanisms on infant development remains poorly understood. IPV indirectly affects infant development through the mother’s parenting behavior, but research on maternal neuro and cognitive processes, such as parental reflective functioning (PRF), is scarce, despite its potential as an unfolding mechanism. The objective of our study, Peri_IPV, is to examine the direct and indirect pathways linking perinatal IPV and infant development. We will analyze the direct impact of perinatal IPV on mothers’ neuro and cognitive parental reflective functioning (PRF) and parenting behavior during the postpartum period, the direct impact of perinatal IPV on infant development, and whether maternal PRF mediates the link between perinatal IPV and parenting behavior. We will also explore the mediation role of parenting behavior in the association between perinatal IPV and infant development and whether the impact of perinatal IPV on infant development occurs through the links between maternal PRF and parenting behavior. Finally, we will examine the moderation role of mother’s adult attachment in the impact of perinatal IPV on maternal neuro and cognitive PRF and parenting behavior during the postpartum period, as well as on infant development.MethodsOur study will use a multi-method, prospective design to capture different levels of PRF, parenting behavior, and infant development. Three-hundred and forty pregnant women will participate in a 4-wave longitudinal study from the 3rd trimester of pregnancy to 12 months postpartum. In the 3rd trimester and 2 months postpartum, women will report on their sociodemographic and obstetric characteristics. In all assessment waves, mothers will complete self-reported measures of IPV, cognitive PRF, and adult attachment. At 2 months postpartum, women’s neuro PRF will be monitored, and at 5 months postpartum, their parenting behavior will be assessed. The infant-mother attachment will be assessed at 12 months postpartum.DiscussionOur study’s innovative focus on maternal neuro and cognitive processes and their impact on infant development will inform evidence-based early intervention and clinical practices for vulnerable infants exposed to IPV.