The purpose of this thesis is to investigate how students writing their master thesis seek information, how they reason about their information seeking behaviour and how their studies in LIS could have affected their information seeking behaviour. The result was analysed with Roger Säljö’s theory about the sociocultural perspective about how individuals learn in relation to their context and the social practice that they act in. The following conclusions were drawn from analysing the result. The students didn’t really reflect over their information seeking behaviour. Most students have an information seeking pattern, developed under an early stage in their studies in LIS, which they then follow for every task they do during their education, even their master thesis. Although the students can tell a difference in their own information seeking behaviour since they first began their LIS-studies. The students’ attitude to information seeking has to do with the social practice that consists of the LIS-subject. Säljö means in his theory that individuals are influenced and learn how to act and reason from the social practices that surrounds them.