“…Second, the perception of COVID‐19 has significantly affected consumers' psychological and emotional states. Therefore, future studies may consider more variables that can influence consumers' consumption patterns, such as nostalgia (Cho, 2021; Cho et al, 2020; Cho, Chiu, et al, 2021; Cho, Joo, et al, 2019; Cho, Khoo, et al, 2019; Cho, Lee, et al, 2021), anxiety (Lee, 2020), and stress (Taylor et al, 2020), to explore their impacts on purchase behavior. Third, as the income level was found to be the moderator in this study, other factors, such as age, online/offline consumption, and knowledge levels about vaccinations may be taken into consideration for future research.…”