  Socially Assistive Robots navigate highly sensible environments, which place
high demands on safety and communication with users. The reasoning behind an
SAR's actions must be transparent at any time to earn users' trust and
acceptance. Although different communication modalities have been extensively
studied, there is a lack of long-term studies investigating changes in users'
communication needs over time. Considering two decades of research in
Human-Robot Communication, we formulate the need to design dynamic robot
personalities to unveil the full potential of SARs.
