Cambridge University Press , 1957. J. C. Aitchson and J. A. C. Brown. The Lognormal Distribution. Cambridge University Press , 1957. Spontaneous speech is also challenging to process because it is more incremental than written language.
Utterances frequently form brief phrases and fragments rather than full sentences.
The TDC will be described in more detail later. Gillian Brown and George Yule, Discourse Analysis, Cambridge University Press , Cambridge, 1983. I split the discussion below into one subsection concerning the notion of topic, and one concerning salience. 5.1 Topic First, let us return brie y to the terminological move from backward looking center to topic. Any rigid theory of intonational meaning, for instance one encapsulating the generalization that focal stress marks new information, is immediately faced with uses of intonational marking that do not conform to that generalization.