This study leverages unique patient resources with respect to children of mothers with well documented histories of SSRI exposure who have been prospectively followed across pregnancy. The multidisciplinary collaboration between the lead investigator, Dr. Lee S. Cohen of the Center for Women's Mental Health (CWMH), and the Laboratories of Cognitive Neuroscience, Boston Children's Hospital (Dr. Charles Nelson), the Department of Molecular and Cellular Biology, and the Psychiatric and Neurodevelopmental Genetics Unit at Massachusetts General Hospital (Dr. Jordan Smoller) is a remarkable opportunity to better understand the effects of maternal antidepressant exposure during pregnancy on neuropsychological development of children.