New ways to interact with technology are gaining ground over the familiar Graphical User Interfaces (GUI). The Tangible User Interfaces (TUI) are one example of this. However, while it may seem intuitive that such interfaces should evoke rather positive responses from users - e.g. feelings associated with pleasure - little has been studied in this sense. In this challenge of understanding the feelings that GUI and TUI have the potential to evoke, we present our findings from a research that involved more than a hundred people. The research question that guided our endeavors was: What are the relations between the feelings of joy, motivation and comfort when using TUI and GUI? We analyze the results and discuss some hypotheses to explain the behavior observed. © 2014 Springer International Publishing Switzerland.8520 LNCSPART 4273284Bernstein, D., (2013) Essentials of Psychology, , Cengage Learning BelmontBradley, M.M., Lang, P.J., Measuring emotion: The self-Assessment manikin and the semantic differential (1994) Journal of Behavior Therapy and Experimental Psychiatry, 25 (1), pp. 49-59Doering, T., Beckhaus, S., Schmidt, A., Towards a sensible integration of paper-based tangible user interfaces into creative work processes (2009) CHI 2009 Extended Abstracts on Human Factors in Computing Systems, pp. 4627-4632. , ACM, BostonFishkin, K.P., A taxonomy for and analysis of tangible interfaces (2004) Personal and Ubiquitous Computing, 8 (5), pp. 347-358Garzotto, F., Gonella, R., An open-ended tangible environment for disabled childrens learning (2011) Proceedings of the 10th International Conference on Interaction Design and Children, pp. 52-61. , ACM, MichiganHayashi, E.C., Baranauskas, M.C.C., The affectibility concept in systems for learning contexts (2011) International Journal for E-Learning Security (IJeLS), 1 (1-2), pp. 10-18Horn, M.S., Solovey, E.T., Crouser, R.J., Jacob, R.J., Comparing the use of tangible and graphical programming languages for informal science education (2009) Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pp. 975-984. , ACMIshii, H., Lakatos, D., Bonanni, L., Labrune, J.B., Radical atoms: Beyond tangible bits toward transformable materials (2012) Interactions ACM, 19 (1), pp. 38-51Ishii, H., Ullmer, B., Tangible bits: Towards seamless interfaces between people, bits and atoms (1997) Proceedings of the ACM SIGCHI Conference on Human Factors in Computing Systems, pp. 234-241. , ACMIshii, H., The tangible user interface and its evolution (2008) Communications of the ACM, 51 (6), pp. 32-36Kaltenbrunner, M., Reactivision and TUIO: A tangible tabletop toolkit (2009) Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces, pp. 9-16. , ACM, BanffNorman, D.A., Cognitive engineering (1986) User Centered System Design, pp. 31-61. , Laurence Erlbaum Associates, Inc. Publisher, New JerseyNorman, D.A., Emotion &design: Attractive things work better (2002) Interactions ACM, 9, p. 4Oxford Dictionaries Language Matters, , http://www.oxforddictionaries.comPatten, J., Ishii, H., A comparison of spatial organization strategies in graphical and tangible user interfaces (2000) Proceedings of DARE 2000 on Designing Augmented Reality Environments, pp. 41-50. , ACM, New YorkRussell, J.A., Mehrabian, A., Evidence for a three-factor theory of emotions (1977) Journal of Research in Personality, 11, pp. 273-294Strawhacker, A., Sullivan, A., Bers, M.U., TUI, GUI, HUI: Is a bimodal interface truly worth the sum of its parts? (2013) Proceedings of the 12th International Conference on Interaction Design and Children, pp. 309-312. , ACM, New YorkSylla, C., Branco, P., Coutinho, C., Coquet, E., TUIs vs GUIs: Comparing the learning potential with preschoolers (2012) Personal and Ubiquitous Computing, 16 (4), pp. 421-432Xie, L., Antle, A.N., Motamedi, N., Are tangibles more fun?: Comparing childrens enjoyment and engagement using physical graphical and tangible user interfaces (2008) Proceedings of the 2nd International Conference on Tangible and Embedded Interaction, pp. 191-198. , ACM, BonnXu, D., Design and evaluation of tangible interfaces for primary school children (2007) Proceedings of the 6th International Conference on Interaction Design and Children, , ACM, Aalborg