Informational density is a principle of cognitive economy, posed by Dirk Geeraerts as a basic aspect of prototype categorization. The principle holds that it is easiest to store as much information as possible in the same category, and easiest to retrieve information from the same category as well, in stead of having to look for it in a lot of different categories. This principle should account for the high ammount of polysemy in human languages.
- Geeraerts, Dirk (1997). Diachronic Prototype Semantics: a Contribution to Historical Lexicology. Oxford: Clarendon Press.