Mediators of the Association Between a Parent’s Experience of Trauma and Their Children’s Well-Being: A Systematic Review

At present, our understanding of trauma's complexity is underdeveloped, particularly with regard to intergenerational effects. In this paper, we review peer-reviewed literature on parental trauma and child well-being, focusing on mediating factors. We conducted a global systematic review of longitudinal, observational studies assessing mediators between a parent's traumatic exposure and their children's well-being. The primary outcome of the review was quantitative measures of child well-being (physical and psycho-social) assessed when the child was 18 years or under. We considered the following experiences as trauma exposures: intimate partner violence, rape, sexual assault, victimization during violent crime, childhood abuse, and exposure to direct, immediate threats to personal survival during war, political unrest, natural disasters, and sudden, critical injury/illness. Thirty-two studies met our inclusion criteria. The two most common mediator categories were caregiver mental health (<i>n</i> = 13) and parenting behavior (<i>n</i> = 10). Other studies measured aspects of the parent-child relationship (<i>n</i> = 9), maternal stress factors (<i>n</i> = 5), parental physical health (<i>n</i> = 2), and child-level factors (<i>n</i> = 6) as mediators. Almost all included studies (<i>n</i> = 28) detected a mediation effect. The majority of studies (<i>n</i> = 21) cited robust theoretical frameworks to support their mediator and outcome choices. Studies varied in quality, but most used appropriate, formal mediation analyses. Several study designs could be enhanced by methods to improve precision and reduce bias. Currently, there is little consistency in how similar constructs are measured between mediation studies. We did not locate any studies in low-income countries, and few studies examined aspects of family dynamics, physical health, environmental characteristics, or paternal factors.