The Russian-born American psychologist Bronfenbrenner's bioecological perspective on human development is an ideal framework for understanding how individuals negotiate the dynamic environment and their own identities in international and intercultural education settings. However, a review of the current literature shows that most studies either adopted the earlier version of the theory (i.e., the ecological systems theory) or inadequately presented the most recent developments of the bioecological model (i.e., the process-person-context-time model). The construct of proximal processes—the primary mechanisms producing human development according to Bronfenbrenner—has seldom been explored in depth, which means the true value of bioecological theory is largely underrepresented in international and intercultural education research. This article first presents a review of studies that adopt Bronfenbrenner's theory and then offers future directions for the scope and design of international and intercultural education research.

In this study, the use of a popular mobile social networking platform (WeChat) is investigated for learning Chinese as a foreign language (CFL) in a beginners’ course at an Australian university. Driven by practical considerations and major issues with previous literature, student engagement and authentic language used in a WeChat class group are investigated. Data was collected through weekly conversation episodes over a semester and from a student survey. Conversation episodes were analysed both quantitatively (by frequencies) and qualitatively (using a discourse approach). The study found that student engagement increased in frequency and complexity towards the end of the semester, and students used Chinese for various authentic purposes in the semi-formal context of class group chats. A microanalysis of transcripts illustrated how the use of Chinese in multilingual and multimodal practices achieved authentic social functions. However, individual differences were observed, and English was frequently used in chats. Recommendations are provided for scaffolding and for utilising different semiotic resources in dynamic group interactions.