Communicative dynamism

In the Prague School's work on functional sentence perspective (i.e. information structure), communicative dynamism is a gradient notion that determines word order in free-order languages like Czech. The degree of communicative dynamism of a sentence element is the extent to which it pushes the communication forward and the elements with least communicative dynamism (those that are contextually known) precede those that have more communicative dynamism (those that convey new information).