Specialist technology
In addition, the effectiveness of designing specialist technology based on surface cues was highly associated with the perceived credibility of the source (Nass, Reeves, & Leshner, 1996; Leshner et al., 1998; Koh & Sundar, 2010; Kim, 2014; Kim, 2016 Liew & Tan, 2018; Tan & Liew, 2020). Further, previous studies on specializing technology have employed source credibility as the grounded theory in their works. Hence, this study would also review the theory in which illustrates in the following section.