The major motivating factor for this paper is the search for a prior shared experience, from which personas would be withdrawn among industrial design students participating to the Design Research and Theory course. All of the participants enrolled to the course were also taking the Interdisciplinary Studio Course (ISC) together with architecture, interior architecture and urban planning students and they were complaining constantly concerning the difficulty of working with their teammates i.e., students coming from different educational backgrounds and having different personal traits. Thus, participants were asked to build fictional personas reflecting their ISC teammates and give suggestions on how ISC could be improved. Findings have been analyzed using grounded theory and interaction process analysis and compared with student suggestions. Results reveal that in order to improve the ISC, students have three requirements: i) a more structured syllabus, ii) individual performance evaluation in addition to team performance evaluation iii) completion of the team project within the course hours at school. In the light of these findings, authors suggest that students should be given training for decision making and time management before the start of the ISCs.