Influence of Maternal Childhood Trauma on Perinatal Depression, Observed Mother-Infant Interactions, and Child Growth.

Introduction: Mothers who have experienced childhood trauma may be at increased risk for disruptions in caregiving behavior, with potential consequences for early child development. However, assessments of caregiving behavior tend to be self-reported, which may bias results, and have been limited in lower-resource settings.

Methods: In an overall sample of 256 South African mothers followed across the perinatal period, this longitudinal study used structural equation modeling to test pathways of association between maternal childhood trauma and depressive symptoms on observed mother-infant interactions at 3.5 months and subsequent child growth outcomes at 1 year.

Results: On average, mothers with childhood trauma histories tended to show lower rated overall interactions with their infants (B = - 0.16, p = .013), which in turn was associated with reduced child growth at 1 year (B = 0.17, p = .046). When this model was adjusted for maternal age and relative socioeconomic status (SES), maternal SES strongly explained child growth (B = 0.31, p < .001) such that the direct effect of mother-infant interactions was no longer significant.

Discussion: For child growth in a lower-resource setting, quality of mother-infant interactions could be a relevant predictor but more strongly explained by maternal SES factors, suggesting a need for broader approaches that not only improve dyadic relationships but also address maternal ecological resources.