SURYANDARI, Savitri; HANURAWAN, Fattah; CHUSNIYAH, Tutut; HUTAGALUNG, Fonny Dameaty; RAMAN, Farah Izyan. Addressing Underachievement Among Gifted High School Students in Mathematics: The Impact of the STAD Approach in Indonesia. Psympathic : Jurnal Ilmiah Psikologi, [S. l.], v. 12, n. 1, p. 53–62, 2025. DOI: 10.15575/psy.v12i1.39621. Disponível em: https://journal.uinsgd.ac.id/index.php/psy/article/view/39621. Acesso em: 24 aug. 2026.