Dynamic Changes in Pre-Service Language Teacher well-being in the Classroom Ecology: A Micro Approach MEHMET SAK TED University Ankara, Turkey NURDAN GURBUZ Middle East Technical University Ankara, Turkey Abstract Although language teacher well-being has been the focus of growing attention in recent years, there is little known of its dynamic and con- textually dependent nature. Integrating the complex dynamic view of well-being with an ecological orientation, this classroom-based study examined the micro-scale changes in pre-service language teacher well-being and the reasons for such changes using data from three pre-service English-as-a-foreign-language (EFL) teachers in T€ urkiye. The individual trajectories of well-being were tracked in a particular class over 4 weeks through self-ratings of well-being at 10-minute intervals during the lectures, journal entries, interviews, and stimu- lated recall sessions on individual microteachings. The findings sug- gest that the experience of pre-service language teacher well-being in the classroom ecology remains subject to inter and intraindividual variability over time, displaying nonlinear trajectories not only within sequences of single lessons but also from one lesson to another in response to a host of personal and contextual factors. These findings imply that pre-service language teacher well-being is not static, but instead is enhanced and reduced at particular moments in the class- room as a result of the interplay of a myriad of variables. We end with a call for more research into micro-scale changes in teacher well-being within applied linguistics and beyond. doi: 10.1002/tesq.3222 TESOL QUARTERLY Vol. 0, No. 0, 0000 Ó 2023 TESOL International Association. 1 15457249, 0, Downloaded from https://onlinelibrary.wiley.com/doi/10.1002/tesq.3222 by Orta Dogu Teknik Universitesi, Wiley Online Library on [09/03/2023]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License