HCI International 2015, jointly with the affiliated Conferences, which are held under one management and one registration, invite you to Los Angeles, California, USA, to participate and contribute to the international forum for the dissemination and exchange of up-to-date scientific information on theoretical, generic and applied areas of HCI, through the following modes of communication: Plenary / Keynote Presentation, Parallel Sessions, Poster Sessions, Tutorials and Exhibition. The Conference will start with three days of Tutorials (2-4 August). Parallel Sessions, Poster Sessions and the Exhibition will be held during the last three days (5-7 August) of the Conference.