A 2026 article in the Anuario de Letras of the UNAM compares the Mexican forms of address tú and usted. It describes tú as the “tratamiento de la cercanía, la solidaridad y la confianza” (form of address of closeness, solidarity and trust). It describes usted as the form of deference, distance and respect. In one interview in the study, the two speakers settle the question at the start and agree to address each other as tú.