\input zb-basic \input zb-ioport \iteman{io-port 05967148} \itemau{Granlund, Rego; Granlund, Helena; Dahlb\"ack, Nils} \itemti{Differences between students and professionals while using a GPS based GIS in an emergency response study.} \itemso{Harris, Don (ed.), Engineering psychology and cognitive ergonomics. 9th international conference, EPCE 2011, held as Part of HCI international 2011, Orlando, FL, USA, July 9--14, 2011. Proceedings. Berlin: Springer (ISBN 978-3-642-21740-1/pbk). Lecture Notes in Computer Science 6781. Lecture Notes in Artificial Intelligence, 374-383 (2011).} \itemab Summary: This paper describes the results and differences between students and professionals who used a GPS based GIS as a collaborative tool in an experimental emergency response study. A total of 132 students, forming 22 groups and 108 professionals forming 18 groups were tested. Differences in both performance and behaviors between the groups have been identified. In the discussion we reflect on the importance to be aware of the participants' background and behaviors while selecting the participants in an experimental study. \itemrv{~} \itemcc{} \itemut{experiment; collaboration support; global position systems; simulation; emergency management} \itemli{doi:10.1007/978-3-642-21741-8\_40} \end