This thesis sets out to provide a preliminary descriptive account of some of the
linguistic features characteristic of autistic communication, in order that the effect of
the disability on interpersonal communication may be more clearly understood.
Special reference is made to two young adult autistic people. Further aims are to
enhance our understanding of the limitations of autistic discourse, where there
appear to be any in comparison with normal discourse, and to provide further
support for the current widely held view that autism is largely a developmental
disorder. The methodology used is taken from the general area of discourse analysis
and pragmatics, and concerns major concepts and constructs - Gricean Implicature,
Relevance Theory, and attempts to link these with the idea of 'Theory of Mind' in
autism etc. Thus features of interaction such as conversational structure, coherence,
phatic communion and repetition are taken into consideration, as well as prosodic
and paralinguistic factors such as intonation, proxemics and gesture. Part of this
thesis is devoted to an exploration of some aspects of various non-native models of
everyday communication, and, it is suggested in this thesis that some of these
aspects are not applicable. Particular attention is also paid to what the literature
describes as the autistic use of 'literal' language. The applicability of this notion,
along with the commonly held idea of 'rigidity of behaviour', are reassessed in light
of evidence suggesting that older, more able autistic people are capable of a degree of
'non-literal' language and verbal game playing. Some conclusions have been
suggested about autistic communication; autistic speakers have less difficulty with
using the 'code model' rather than the 'inferential model'; autistic speakers'
communicative intention is more highly developed than their informative intention;
there is little or no evidence of any ability to use inference; autistic speakers are
fascinated with testing 'possibility of necessity' (ie epistemic status) and seem unable
to distinguish between the two - this disability, when taken with the autistic difficulty
with inference, adds up to a massive cognitive impairment in ways which help us to
account for their specific communicative disabilities. Thus it has been confirmed
that, as the literature has suggested, autistic speakers suffer pragmatic failure of
many kinds, for example, difficulty with most discourse features such as adjacent
pairs, transition relevance, politeness and prosody, as well as with gesture and
posture
