The analysis of gestural and verbal pragmatic markers produced by Mild Cognitive Impaired participants during longitudinal and autobiographical interviews.

CONTEXT: This corpus-based study presents a multimodal analysis of verbal pragmatic markers and non-verbal pragmatic markers in elderly people with Mild Cognitive Impairment aged over 75 years. METHODS: The corpus collection and analysis methodology has been described in the Belgian CorpAGEst transversal study and the French VintAGE longitudinal and transversal oriented pilot studies. The protocols are available online in both English and French. RESULTS & CONCLUSION: Our general findings indicate that with ageing, verbal pragmatic markers acquire an interactive function that allows people with MCI to maintain intersubjective relationships with their interlocutor. Furthermore, at the non-verbal level, gestural manifestations are increasingly used over time with a preference for non-verbal pragmatic markers with a referential function and an adaptive function. We aim to show the benefits of linguistic and interactional scientific investigation methods through cognitive impaired ageing for clinicians and family caregivers.