A discourse analysis provide important clinical information on how language is organized and used to express ideas in brain-injured patients. Both qualitative analysis of the discourse reveals the type or severity of language disorder that each patient exhibit. Most of standardized language assessment procedures do not give the speech-language pathologists full clinical picture about the functional of language, particularly in the elderly patient with dementia. Underidentification of language disorders in the elderly demented population is partly due to the lack of standardized procedures that can assess their languages use on a discourse level. The present study provide a theoretical bases for developing a qualitative and quantitative analysis of discourse in elderly patients with dementia.