We report on this article our teaching experience in Medical Psychology Course for second-year graduation students of Medical School of UNIFESP-EPM, which has shown efficient for sensitizing and for training students to observe, to perceive and to evaluate patients' mental and emotional state. From discussion of theoretical fields of knowledge like History of Medicine, Communication Theories, Psychiatry, Psychoanalysis and Developmental Psychology, we prepare students for their clinical practice through patients' interviewing. We created a guideline which offers a reference of basic issues that must be addressed and that must be noted at patients' interviews, which guide on how to interview and also on how to do a written report. In a dialectical relation they study theories and they try theories' application, they interview patients and they write reports on practical experience combined with theories.