| dc.description.abstract | The main aim of this thesis is to explore how the pragmatic functions topic and focus,
influence the formal organization and content of two discoursal components: word order, and
referential coherence, based on Ekegusii, a Bantu language spoken in Kenya.
The data for the study consists of corpora el icited using question-answer coherence gu ided by
pictures, and elicited monologic narratives. It uses an eclectic approach in describing the role
of information structure in Ekegusii. It utilizes Lambrecht's model of information structure,
and Bidirectional Optimality Theory to capture both production (by speaker) and
comprehension (by hearer) aspects in discourse. Centering Optimality Theory is used to
account for the discourse-pragmatics of referential coherence.
The study found out that information structural constraints at the sentential level mainly
influence the information state of both canonical and non-canonical constructions word
orders. It influences the interpretation, through the pragmatic structuring of propositions,
helping the hearer differentiate what is information (focus) in relation to a given topic, and
this may induce movement, insertion or deletion of some sentential constituents. However,
information structure optionally affects sentential form in Ekegusii.
In relation to how information structure interacts with referential coherence, the results of a
corpus based analysis show that alternative ways of coherently referring to participants using
nominal expressions in the roles of grammatical subject object and oblique depend on
pragmatic functions. Coherence was found out to be driven by a hard constraint "COHERE"
which cannot be violated even by the information structural constraints that licences focus.
The focus relations, sentence focus and presentational focus, are therefore associated with
low coherence, transitions, not dire incoherence, because the focus relation is typically used
for shifting reference in discourse. The topic relations are associated with higher coherence
transitions when attention is focused on a given topical entity.
The results of the study demonstrate the need for incorporation information structure, an
independent component of grammar, in handling the problem of pragmatic motivation in the
grammar of human languages at the micro- and macro-syntactic levels of discourse. Though
the study is theory oriented and on Ekegusii, it is relevant to understanding how packaging
information affects discourse, by considering the syntax, semantics and pragmatics (the
'semiotic circle') of information in general. Is of use to persons who are interested in
understanding how messages are to be optimaly coded and decoded in human communication
by interlocutors in Ekegusii, and beyond any given language. | en_US |
