We report on the first results of an experiment designed to investigate properties of communicative feedback produced by non-attentive listeners in dialogue. Listeners were found to produce less feedback when distracted by an ancillary task. A decreased number of feedback expressions communicating understanding was a particularly reliable indicator of distractedness. We argue this finding could be used to facilitate recognition of attentional states in dialogue system users.
Bibliographic reference. Buschmeier, Hendrik / Malisz, Zofia / Włodarczak, Marcin / Kopp, Stefan / Wagner, Petra (2011): "`are you sure you're paying attention?' - `uh-huh' communicating understanding as a marker of attentiveness", In INTERSPEECH-2011, 2057-2060.