Simplicity is a multifaceted concept with numerous dimensions and thus represented as a second order formative factor following prior studies (Choi and Lee, 2012, Lee et al., 2015). In addition to simplicity, the model proposes that the PAD model influences WOM intentions through the intermediate role of satisfaction. This is because satisfaction and ease of use play a key role in enhancing user experience (Choi and Lee, 2012, Hornbaek, 2006), which in turn results in positive WOM intentions (Miniero et al., 2014, Popp and Woratschek, 2017). A discussion of the underlying assumptions that guide the hypothesized associations is presented below.