Key Message
This study explored how time preferences—patience and present bias—affect compliance with COVID-19 preventive behaviors among Iranian adults. Using a web-based survey and quasi-hyperbolic discounting model, it found that those with low patience or present-biased preferences were less likely to follow preventive measures than those with high patience or future-oriented preferences. The findings highlight the need to consider time preferences in designing effective public health interventions to improve adherence to preventive measures.