“…The convergence with theories originating from social psychology such as Theory of Reasoned Action (TRA) (Fishbein, 1967;Fishbein & Ajzen, 1975), (Decomposed) Theory of Planned Behaviour ((D)TPB) (Ajzen, 1991;Taylor & Todd, 1995) and Technology Acceptance Model (TAM) (Davis, 1986;1989) in particular led to an extremely valuable -yet fragmented -increase in research on adoption and determinant models. As a result, some scholars consider one or two extra determinants (Holak & Lehmann, 1990), while others take into account eight (Plouffe et al, 2001), ten (Choi, Choi, Kim, & Yu, 2003) or more determinants (Williams et al, 2009;Wirth, von Pape, & Karnowski, 2008). Downside of this increased attention is that researchers are confronted with a lack of overview, since the growing multidisciplinary interest entails a cluttered and inconveniently arranged entirety of determinants (Moore & Benbasat, 1991;Premkumar & Bhattacherjee, 2008).…”