TeesRep: Teesside University's Research Repository http://tees.openrepository.com/tees/ This full text version, available on TeesRep, is the post-print (final version prior to publication) of: Gilroy, S.W., Porteous, J., Charles, F. and Cavazza, M.O. (2012) 'Exploring passive user interaction for adaptive narratives', Proceedings of the 2012 ACM International Conference on Intelligent User Interfaces, Lisbon, Portugal. 14-17 February 2012, New York: ACM, pp.119-128. © ACM, 2012. This is the author's version of the work. It is [posted] included here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in Proceedings of the 2012 ACM international conference on Intelligent User Interfaces http://dx.doi.org/10.1145/2166966.2166990 When citing this source, please use the final published version as above. This document was downloaded from http://tees.openrepository.com/tees/handle/10149/218598 Please do not use this version for citation purposes. All items in TeesRep are protected by copyright, with all rights reserved, unless otherwise indicated.