Context's modeling for participative problem solving

International audienceThis paper reviews the interest of using context for participative simulation in virtual environment for training. Context is an interesting concept for at least two points: Virtual agents and humans have to collaborate ,so they must communicate and understand each other. This is the reason why we use a simplified analogy with human's decision-making. Our aim is to simulate some cognitive mechanisms in order to have credible agent's decision-making. We keep the notion of context. Agents reason with the situation's context, which is divided in social, environmental, historical and personal contexts. Another interesting aspect is the explanation needed when the learner makes a mistake. We argue, in this article, that context is a good concept to give better explanations. At last we show an example of an agent decision-making