“…As shown in Figure 1, the AT has six categories, including subjects, objectives, community, tools, rules and labour division (Engeström, 1987(Engeström, , 2001. In this study, AT-related moderators were proposed based on existing literature: subjects refer to specifications about participants, including educational levels and sample size types, as they were reported to be important influencers for blended language learning (Li, 2022a). Objectives refer to learning targets, including language skills and outcome types, since blended learning supports learning differently for language skills (e.g., speaking, writing, reading, etc.)…”