The language/action perspective (LAP) "takes language as the primary dimension of human cooperative activity,"[1] applied not just in person-to-person direct (face-to-face) interactions, but also in the design of systems mediated by information and communication technology.

    One useful way to identify a perspective is by its declaration of what people do. From a language/action perspective we say that People act through language. As a contrast, consider the more predominant perspective that People process information and make decisions.

Development:

The perspective was developed in the joint authorship of Understanding Computers and Cognition by Fernando Flores and Terry Winograd in 1987.

Example:

action do not speak louder than words!

Interface as mediator