This is highly regional, both within the US and throughout the rest of the world. In some cultures, you always downplay your own contributions, and listeners i

This is highly regional, both within the US and throughout the rest of the world. In some cultures, you always downplay your own contributions, and listeners inflate them; in others, you always talk yourself up, and listeners adjust accordingly. When you work in a large, heterogenous organization, it is important to pay attention to these differences, or else you end up either assuming someone did nothing or is a useless braggart because their culture doesn't match your own.