Web- and Mobile-Based ACT Intervention
The intervention implemented in this study was adapted from the 2 ACT handbooks by Harris [The intervention lasted for 5 weeks and consisted of 5 modules, each covering a different theme: opening ACT, observing one’s mind, mindful living, knowing what matters, and doing important things. Each module was made available every Monday and included 2 parts: the thematic course and homework. The thematic course was divided into an overview of the content and a role-play of the practice, presented in the form of a video that was 15 to 30 minutes long. Participants were required to complete the thematic course within a week. Homework assignments were divided into worksheets and experiential exercises. The former consisted of inspirational and guiding questions regarding the content of the thematic course, while the latter comprised several mindfulness practices with audio recordings that were each 10 to 20 minutes long and could be practiced by participants multiple times (The intervention was implemented through the Rain Classroom app, which is a WeChat app that provides online teaching and learning services (