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Developmental profile of speech-language and communicative functions in an individual with the preserved speech
Peter B Marschik1, Ralf Vollmann, Katrin D Bartl-Pokorny
1Institute of Physiology (IN:spired; Developmental Physiology and Developmental Neuroscience), Center for Physiological Medicine, Medical University of Graz , Graz , Austria .
Objective:
We assessed various aspects of speech-language and communicative functions of an individual with the preserved speech variant of Rett syndrome (RTT) to describe her developmental profile over a period of 11 years.
Methods:
For this study, we incorporated the following data resources and methods to assess speech-language and communicative functions during pre-, peri- and post-regressional development: retrospective video analyses, medical history data, parental checklists and diaries, standardized tests on vocabulary and grammar, spontaneous speech samples and picture stories to elicit narrative competences.
Results:
Despite achieving speech-language milestones, atypical behaviours were present at all times. We observed a unique developmental speech-language trajectory (including the RTT typical regression) affecting all linguistic and socio-communicative sub-domains in the receptive as well as the expressive modality.
Conclusion:
Future research should take into consideration a potentially considerable discordance between formal and functional language use by interpreting communicative acts on a more cautionary note.
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