This book deals with the conditions and the consequences of the
production of different syntactic sentence structures. During the
sixties the syntactic structure of sentences was one of the most
intensively studied topics in psycholinguistic research. The dominant
interest did not, however, lie in the function of syntactic structures
but in the ability to understand and to utter them. Later, in the
seventies the interest shifted to the semantic structure of sentences.
Many studies centred around the structural aspects of the repre-
sentation of knowledge. The leading question was: how can the meaning of
an utterance be described? The widely accepted answer was: the central
unit of meaning is the proposition. From this point of view, the aim of
an utter- ance is to transmit propositional meaning, and syntactic
structure is of inter- est only insofar as it influences the
comprehension of propositional meaning. In this book both aspects, i. e.
the syntactic and the semantic structure of sentences have been
considered. The dynamic aspects of knowledge use and its relationship to
the syntactic structure of sentences are thoroughly analysed and studied
empirically. The main question is how semantic knowledge is communicated
through syntactic structure. Syntactic structure has causes and
consequences. In general we assume that the syntactic structure reflects
dynamic aspects of the knowledge base of the speaker and determines
dynamic states in the listener.