This paper present findings from research on the following issues: How nurses from surgical unit learn a caring theory by being co-researchers in a research group. The aim was to describe the learning process of the nurses when they were co-researchers in a research group. The study has a qualitative design and a hermeneutical approach. Data were collected through interviews with seven registered nurses in hospital in mid Sweden. The study shows that nurses learn caring by listening to each other. Four sub-themes emerged through the interpretation: Nurses learn caring theory by listening to each other when they are; giving time to talk to one another, expressing their actions in words, sharing thoughts with others and allowing themselves to be touched by each other's stories. The new understanding highlights that learning in research groups can be understood as a learning process, where nurses listen to one another and thereby create an expression and meaning of their experiences through caring theory, while at the same time developing their profession. Nurses learn caring theory by being co-researchers in a research group. In order for this to happen, the research collaboration should be characterized by realism and engagement. (C) 2011 Elsevier Ltd. All rights reserved.