“…Discourse analysis provides a promising avenue for exploring the behavioural changes that occur with dementia, as effective discourse production is the result of an interaction between complex cognitive processes such as attention, memory, and perception with language and world knowledge. Discourse deficits associated with AD that are described in the literature include: (1) empty speech (Hier et al, 1985;Kempler, 1995;Nicholas, Obler, Albert, & HelmEstabrooks, 1985); (2) fewer relevant units of information and reduced informational content (Appell et al, 1982;Bayles et al, 1985); (3) word finding and lexical retrieval difficulties, frequent circumlocutions, paraphasias (Hier et al, 1985;Kempler, 1995;Kirshner, Webb, & Kelly, 1984); (4) use of higher proportion of pronouns without antecedents (Hier et al, 1985;Kempler, 1995); (5) ideational perseveration (Bayles et al, 1985;Kempler, 1995); (6) reduced cohesion and coherence (Appell et al, 1982;Ripich & Terrell, 1988, Ripich et al, 1983, 1988); (7) poor topic maintenance and frequent topic shifting (Garcia & Joanette, 1994;Kempler, 1995;Ulatowska, Hayashi, Cannito, & Fleming, 1986); (8) excessive verbosity (Appell et al, 1982); and (9) difficulty with comprehension of abstract language (Kempler, 1995).…”