Our self-concept is how we see ourselves in our minds. The goal of this research was to discover any significant differences in the dimensions of self-concept between clinical nurses employed in an intensive care unit in Slovenia and Slovenian women from the general population, who represented the control group. The research included 603 women aged 20-40 years (mean 29.94; standard deviation +/-6.0) who had a high-school education. To determine the differences between the groups statistically we used one-way analysis of variance. The results revealed that clinical nurses had a more positive self-concept than members of the control group. Self-concept is very important in nursing because it is closely connected to the existing value system of individuals and their behaviour. Self-concept gives nurses a sense of how they use their abilities and how they perform in relation to patients.