By Gordon Rugg
There are a lot of very useful concepts which are nowhere near as widely known as they should be.
One of these is the concept of instrumental versus expressive behaviour. It makes sense of a broad range of human behaviour which would otherwise look baffling. It explains a lot of the things that politicians do, and a lot of the ways that people act in stressful situations, for instance.
This article gives a short overview of the traditional version of the concept, and describes how a richer form of knowledge representation can make the concept even more useful.
Humans being expressive and instrumental