The invention relates to the field of psychopharmacology. More particularly, the invention relates to the treatment of mental disorders, such as impaired interpersonal and behavioral disorders, including sexual disorders such as M.E.D. and H.S.D.D. The invention provides new therapeutic compositions and methods for treating mental disorders, including M.E.D. and H.S.D.D. The compositions and methods according to the invention provide improved awareness and alertness to environment, improved adaptation to environment and ability to sustain attention, and increased interest in environment and capacity for arousal, without increased aggressiveness.