@article{casas_fernández-theoduloz_ortuño_tonks_2026,  title={Expectancy–value beliefs as predictors of positive–valence emotions and their variation across academic tracks in high school Physics},  volume={48},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-2025-0353},  DOI={10.1590/1806-9126-RBEF-2025-0353},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Casas, Antonio Javier and Fernández-Theoduloz, Gabriela and Ortuño, Victor and Tonks, Stephen M.},  year={2026},  pages={e20250353} }