Abstract: In the near future, intelligent agents on mobile devices will push to as well as request location-dependent information from users at convenient and
inconvenient times. In this paper, we consider the negative effects of mobile agent interruption and present strategies to reduce these effects drawn from
social psychology and task-interruption literature. We propose the implementation of socialbehaviours to minimize the negative effects of (task) interruptions caused by mobile agents and report the results of two studies that evaluate two socialbehaviours agents can adopt. The results from these studies
indicate that a mobile agent adopting social system behaviour can lead to a less disruptive user experience.
Abstract: Mobile services can provide users with information relevant to their current circumstances. Distant services in turn can acquire local information from people in an area of interest. Socially expressive agent behaviour has been suggested as a way to build reciprocal relationships and to increase user
response to such requests. This between-subject, Wizard-of-Oz experiment aimed to investigate the potential of such behaviours. 44 participants performed a search task in an urgent context while being interrupted by a mobile agent that both provided and requested information. The socially
expressive behaviour shown in this study did not increase compliance to requests; it instead reduced trust in provided information and compliance to warnings. It also negatively impacted the affective experience of users scoring lower on empathy as a personality trait. Inappropriate social expressiveness can have serious consequences; we here
elaborate on the reasons for our negative results.