B.C.F. Choi's scientific contributions

... The instruments of seven constructs are all adopted for previous studies. Specifically, perceived usefulness is measured by five items adopted from Hsu and Lin (2015), confirmation is measured by four items adopted from Bhattacherjee (2001b) and Hsu and Lin (2015), satisfaction is measured by four items adopted from Bhattacherjee (2001b), personal innovativeness is measured by three items adopted from Wu et al. (2017) , normative social influence is measured by five items informational social influence is measured by four items and both are adopted from Bearden et al. (1989) and Fu et al. (2020), familiarity is measured by three items adopted Y. Lee and Kwon (2011) and Gefen et al. (2003), and continuance intention is measured by three items adopted from Bhattacherjee (2001b) and Kim (2010). All items used seven-point Likert scales, where 1 indicates ''strongly disagree'' and 7 indicates ''strongly agree.'' ...