Background. Major depressive disorder (MDD) is one of the most prevalent psychiatric disorders and a leading cause of disability worldwide. Existing therapies fail to produce complete recovery. Progress toward improving outcome must include innovations that are safe, powerful, inexpensive and simple (for fast and effective dissemination). The proposed research seeks to test one such innovation. The investigators seek to improve outcome by improving memory for the content of cognitive therapy (CT) sessions. CT is one of the most promising approaches to the treatment of MDD, yet there is room for improvement.