The prevalence of antepartum depression (APD) increases twofold in women with poor social supports, low socioeconomic status (SES), and negative life events. APD may cause low birth weight, premature labor, and eclampsia. APD is also one of the best predictors of postpartum depression (PPD), which in turn may lead to impaired emotional and cognitive development of the infant. Therefore, early treatment of APD is important for the well-being of both the woman and her infant. Forms of psychotherapy have been successful in treating depression in the general population, but more research is necessary to determine the safest and most effective means of treating depression in pregnant women. Interpersonal psychotherapy targets interpersonal events and relationships. Interpersonal psychotherapy adapted for ADP may be effective in reducing depression, preventing PPD, and improving maternal infant attachment. This study will compare the effectiveness of interpersonal psychotherapy for depression in pregnancy (IPT-P) with a parenting education program (PEP) in treating depressed pregnant women who may be affected by SES and psychosocial factors.