“…UEMs can be categorized in different ways, but there are essentially three main types of methods : inspection (or expert), evaluation (e.g. heuristic evaluation, Hvannberg et al, 2007;Nielsen, 1992 and cognitive walkthrough Chikhaoui and Pigot, 2010;Langdon et al, 2010;Lewis et al, 1990;Mahatody et al, 2010), model evaluation Sutcliffe et al, 2000) and user evaluation (e.g. usability testing Nørgaard and Hornbaek, 2006).…”