TY - JOUR A1 - Huang, Yizhen A1 - Richter, Eric A1 - Kleickmann, Thilo A1 - Richter, Dirk T1 - Class size affects preservice teachers' physiological and psychological stress reactions BT - an experiment in a virtual reality classroom JF - Computers & education : an international journal N2 - Teachers frequently express stress associated with teaching in large classrooms. Despite the timehonored tradition in teacher stress research of treating class size as a job-related stressor, the underlying premise that class size directly impacts teachers' stress reactions remains untested. In this randomized controlled experiment targeted at preservice teachers, we utilized a standardized virtual reality (VR) classroom to examine whether class size (number of student avatars) directly affected physiological (heart rate) or psychological (subjective rating) stress reactions among 65 preservice teachers. Results from linear mixed-effects modeling (LMM) showed that class size significantly predicted both their physiological and psychological stress reactions in the simulated environment: Average heart rate and subjective stress ratings were both significantly higher in the large class size condition. Further investigations into the causes of this association has been proposed. These findings may contribute to a better understanding of the effects of classroom features on preservice teachers' emotional experiences and well-being. KW - Augmented and virtual reality KW - Simulations KW - Improving classroom teaching KW - Media in education KW - Pedagogical issues Y1 - 2022 U6 - https://doi.org/10.1016/j.compedu.2022.104503 SN - 0360-1315 SN - 1873-782X VL - 184 PB - Elsevier CY - Oxford ER -