This study described nursing decision-making models and variables related to these models For this purpose a 56-item Likert-type questionnaire was constructed according to the Dreyfus model of skill acquisition as applied to nursing by Benner and information processing theory The target group consisted of 100 registered nurses working in inpatient clinics and 100 public health nurses working in preventive health care The decision-making variables explored were nurses' experience, education and knowledge as well as the nature of the nursing task and context The results revealed four different types of decision-making (a) unquestioning/questioning decision-making, (b) creative—diversive decision-making, (c) patient/nurse-oriented decision-making, and (d) rule- and situation-based decision-making The most important factors related to decision-making were experience and the nature of the nursing task and context