*5.1. Demographics and Bias Test Results*

Among the 313 valid questionnaires collected from participants in this study, 125 (39.9%) were male and 188 (60.1%) female; the largest number of people were aged between 30 and 39 years (N = 165, 52.7%), followed by those aged between 40 and 49 years (N = 51, 16.3%). Of the participants, 172 (55%) had a bachelor's degree, and 75 (24%) had master's or doctoral degrees. The vast majority had a monthly income in the range of CNY 10,000–14,999 (N = 146, 46.6%), while 17.9% had a monthly income in the range of CNY 5000–9999 (N = 56). Referring to the data of people's concern about DCTA in China from the Baidu Index (https://index.baidu.com, accessed on 19 August 2022) (Figure 4), this survey result has a certain degree of representativeness.

**Figure 4.** Crowd attributes of Chinese people who care about DCTA.

To detect the non-response bias, a paired *t*-test was performed on the demographic data of the first and last 25 participants in the survey [56]. The results of the test showed no significant differences. Therefore, non-response bias was not a serious problem.

Common method bias (CMB) is also a common problem in surveys, which we measured using two methods. First, this study measured the rate of extraction of single factors according to the method proposed by Podsakoff et al. [56], which was 24.154%, below the threshold of 40%. Second, this study was performed using the full-VIF method of measurement in PLS-SEM to detect CMB [57]. All VIF values were below the threshold of 3.3 [54]. The results of these two tests indicate that CMB was not a serious problem in this study.
