RESUMO
We have noticed that if the different orders (order n(o): 93-221 of the 16. February related to the professional rules, order n(o): 93-345 of the 15. March. 1993 related to the professional acts) had indeed been brought to the nurses' attention, the latter did not seem to have integrated the content of these texts into their professional experience. We have chosen as conceptual pattern the theory of Ajzen and Fishbein (1980) linked to the human behaviours. Thanks to the results obtained from the questionnaires (or measuring instruments) we can evoke the fact that, despite a precise legislation, there are still many situations where the position of the nurse faced with responsibility is not clear. This work permitted a new approach of the behaviour of the nurses faced with problems of responsibility, with a constant concern for the improvement of the quality of medical care.