Exploring the Impact of Elaborateness and Indirectness on User Satisfaction in a Spoken Dialogue System
Juliana Miehle, Wolfgang Minker, Stefan Ultes · 2018
We present a study addressing the questions of how varying communication styles of a spoken user interface are perceived by users and whether there exist global preferences in the communication styles elaborateness and indirectness. A total of 60 participants had two conversations each with Amazon's Alexa where Alexa used varying wordings for its output. In a post-survey, the participants had to rate statements to subjectively assess each dialogue as well as indicate which dialogue they preferred. The results show that the system's communication style has a direct influence on the user's satisfaction level as well as the user's perception of the dialogue and imply that the preference in the system's communication style is individual for every person. This emphasises the need for adaptive user interfaces.