Matos, J. F. L., Silva, V. H., Silvestre P. & Pinto, A. M. G.  (2025). Life satisfaction and lifelong learning: The role of intrinsic motivation and adaptation of the MSSP lifelong learning scale. International Journal of Lifelong Education, 44(3), 306?329. https://doi.org/10.1080/02601370.2024.2435355