“…Preparing teachers for ESD is critical for creating a sustainable future (UNESCO- UNEP, 1990), enabling them to acquire the necessary knowledge, skills, and dispositions needed to understand and deal with the 21 st century challenges (UNESCO, 2017). Accor-dingly, as UNESCO (2005) emphasized, national teacher education policies of sustainability need to be revised to increase pre-service teachersí (PSTs) understanding of multifaceted and transdisciplinary sustainability concepts (Summers et al, 2003;Hepper, 2021;SalÓte et al, 2021), their attitudes (Tomas et al, 2017;Echegoyen-Sanz & Martín-Ezpeleta, 2021), competencies (Sleurs, 2008;Suleimenova & Ivanova, 2018;Kohl & Hopkins, 2020), beliefs (Yang et al, 2010) and other related dispositions. Among these constructs, several studies reported that beliefs had the potential to interfere with PSTsí teaching and learning (Keys & Bryan 2001), attitudes (Cotton et al, 2007), and behaviors (Corraliza & Berenguer, 2000).…”