New Jersey doctors will be required to educate expecting mothers and their families about postpartum depression and screen new moms for the disorder under a new law signed Thursday.

Gov. Jon S. Corzine called the new requirements, which go into effect this fall, "a significant and positive step for New Jersey's mothers, newborns and families."

Corzine was joined at the bill-signing ceremony by Senate President Richard J. Codey and his wife, who has suffered from the postpartum depression. Codey, who briefly served as acting governor after former Gov. James McGreevey resigned in 2004, made awareness of postpartum depression a highlight of his term.