RT journal article T1 Pre-Service Early Childhood Teachers’ Perceptions of Critical Thinking and Sustainability: A Comparative Study Between Spain and Poland A1 Aragón Núñez, Lourdes A1 Opora, R. A1 Casanova Correa, Juan A2 Didáctica K1 critical thinking K1 initial teacher training K1 perceptions K1 sustainability AB This study explores the perceptions of future educators, specifically Early Childhood Education students at the Universities of Cádiz and Gdansk, regarding the interconnections between critical thinking and sustainability. The work aims to provide valuable insights into general teacher training, examining how these students’ experiences are contextualized within their respective educational systems and cultural contexts. To achieve this, eleven group interviews (three in Cádiz, eight in Gdansk) were conducted using a structured and expert-validated script. The transcribed data were qualitatively analyzed using QDA MINER v.6 software. Key findings reveal divergent perceptions of critical thinking among pre-service teachers: while Spanish students leaned towards a subjective understanding, Polish students emphasized an objective, data-driven approach. This distinction has significant implications for the conceptualization and teaching of critical thinking in educator training. Despite these differences, both groups of participants highlighted the necessity of implementing active methodologies in higher education (such as cooperative learning, problem-solving, and debates) to foster critical thinking, both for their own development and for preparing for their future practice with young children. This study also identified an excessive emphasis on theoretical aspects of sustainability in these future teachers’ training and a limited understanding of their practical application in the classroom. Furthermore, explicit connections between critical thinking and sustainability were scarce in student responses, highlighting a gap in current educator training in these areas. Collectively, the results suggest significant weaknesses in current teacher training efforts regarding the development of critical thinking and its effective integration with sustainability competencies PB Multidisciplinary Digital Publishing Institute (MDPI) SN 2071-1050 YR 2025 FD 2025 LK http://hdl.handle.net/10498/37879 UL http://hdl.handle.net/10498/37879 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 21-sep-2026