POPULATION - patients attending the outpatient department of the National Institute of Psychiatry "Ramon de la Fuente" between 20 and 45, considered in remission of major depressive disorder (MDD) (DSM-IV) score ≤7 be included points on the Hamilton Depression Scale of (HAM-D-21) and / or ≤9 points in the Beck Depression Inventory (BDI), which have had a positive response to drug treatment and / or remain with pharmacotherapy phase continuation or maintenance, and there report or detection of persistent residual symptoms.