Reducing Fetal Exposure to Maternal Depression to Improve Infant Risk Mechanisms

This study evaluates Interpersonal Therapy (IPT) in the treatment of depression among pregnant women with elevated depressive symptoms. Half of the women will be randomized to receive IPT, and the other half will get Treat As Usual, provided via behavioral health in the hospital.

Exposure to maternal depressive symptoms is one of the most well established risk factors for the development of later child psychopathology. Accumulating evidence from naturalistic observational studies documents that fetal exposure to maternal depressive symptoms is associated with risk for later child mental health problems. Maternal depression is one of the most common prenatal complications with approximately 40% of women experiencing elevated levels of depressive symptoms. The majority of past research has been correlational, so potential causal conclusions have been limited. This project will break new ground by testing the hypothesis that manipulating maternal depressive symptoms will benefit infant outcomes. In this project, maternal depressive symptoms will be reduced using brief interpersonal therapy (IPT), a well-established and efficacious treatment, and testing whether this reduction leads to an improvement in the development of infant mechanisms associated with risk for later psychopathology. The investigators propose to assess 300 pregnant women who report elevated levels of depressive symptoms and their infants. Prior to the intervention, maternal measures of depressive symptoms will be collected. Then half of the women will be randomized to receive IPT and the other half will receive enhanced usual care (TAU). After completion of the intervention, maternal measures will be collected longitudinally through 14 months postpartum. Infants will be evaluated at birth and two other times. Infants will be assessed across four units of analysis (brain structure and function, physiology, behavior, and maternal-report).