Department
of Linguistics, Universitas Indonesia, Depok, Indonesia
ABSTRACT:
Speech disorder is the most dominant disorder that can
be observed in people with Down Syndrome (DS). The main and visible causes of
the speech disorder are physiological features in their speech tools. It causes
deviation in their utterance production, such as sound omission, sound substitution,
sound augmentation, sound reposition, and the combination of all the deviations.
One thing that has not been known by common people about people with DS is
their inconsistency in uttering the same words which makes them difficult to
communicate with others. Thus, this research aims to observe the deviation
patterns in people with DS by trying to find pattern consistency among
inconsistent utterances that people with DS produce. The method used in this
research is qualitative method. The subject is a 16;7 years old DS person with a
mental age of 3;7 years old and an IQ score of 22. The data of this research
are utterances with sound substitution deviations. Two patterns are discovered:
(1) the subject tends to substitute the consonants located at the beginning of
words and (2) the subject tends to substitute the sounds into alveolar sounds.