Understanding Cognitive Processes Behind "I Don’t Know" Responses in Sustainability Literacy Assessment Using Eye-Tracking and Usability Evaluation. ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK, [S. l.], v. 16, n. 2, p. 431–444, 2026. DOI: 10.51747/energy.v16i2.p431-444. Disponível em: https://e-journal.upm.ac.id/index.php/energy/article/view/energy.v16i2.p431-444. Acesso em: 8 aug. 2026.