Conversations in dementia with Lewy bodies: Resources and barriers in communication.

What is already known on the subject It is well-known that dementia with Lewy bodies (DLB) affects language and cognition. In conversations, persons with DLB experience difficulties in turn-taking, topic initiation, entering conversations and keeping up with the conversational tempo. What this study adds This study sheds light on conversations in one dyad where the husband has been diagnosed with DLB. The results from three different information sources (testing of language and cognition, interviews and a video-recorded conversation) reveal patterns of resources and barriers that at first appear to contradict each other. However, the contradictions can be resolved when these discrepancies are examined in light of the differences in task structure, in terms of, for example, predetermined topics and how turn-taking is managed. What are the potential or actual clinical implications of this work? In order to gather a holistic picture of a person's conversational abilities, clinicians need to include information from both monological tasks (e.g., linguistic testing) as well as dialogical tasks (e.g., video recordings from conversation). The results also need to be evaluated in light of all conversation partners' perspectives on function in daily life. Furthermore, it is important to consider the nature of assessment tasks (particularly their interactional structure) when interpreting assessment results.