The RISQUE project focuses on the human dimension of catastrophic risk and aims to inform public decision-making in the prevention and management of risks of natural disasters, particularly volcanic disasters. It aims to study the risk of natural disasters in a threefold psychological, historical and linguistic dimension. The coherence and necessity of this multidisciplinary approach is based on a simple and unifying consideration in natural disaster risk management: There is no single good management, which can be transposed to all concrete contexts, because the weight of psychosocial, cultural and linguistic, economic and socio-political factors is decisive in ensuring the best way to ensure the maximum protection of populations. Risk mobilises the expertise of 3 UCA research units (implicated in Challenge 4 of the ISITE CAP 20-25 project): (1) Understanding how natural disaster risk situations affect the cognitive functioning and behaviour of individuals (LAPSCO UMR CNRS 6024 and UCA); 2) Study from a historical perspective how public management officials have appropriated scientific knowledge in Andean countries. (House of Human Sciences USR CNRS 3550 and UCA); 3) Create a multilingual dictionary of catastrophic natural hazards to facilitate the dissemination of knowledge and practices at the level of public action (LRL EA 999).