“…With this focus on interaction we have, as a community, invented and developed a number of methods and approaches to interaction. We have developed approaches for Interactive Systems Design that are technology-centered, including approaches for requirement analyses (e.g., Mylopoulos et al, 1999;Kawaguchi, 2003), interface design (e.g., Miller, 1997;Souza et al, 2000;Oliveira & Rocha, 2005;Blackwell, 2006;Ruthven, 2008), design guidelines (e.g., Häkkilä & Mäntyjärvi, 2006) and UI principles (e.g., Beier & Vaughan, 2003). There has also been a long tradition of research into usability studies (e.g., Gould & Lewis, 1985;Nielsen & Molich, 1990;Jeffries et al, 1991;Sauro & Kindlund, 2005;Hollingsed & Novick, 2007;Frøkjaer & Hornbaek, 2008;Pilgrim, 2008) and methods for evaluating user performance (e.g., Card et al, 1980;Kolehmainen et al, 2008) and UI efficiency (e.g., Amant et al, 2003).…”