@article { petisca15, abstract = {We report a study performed with a social robot that autonomously plays a competitive game. By relying on an emotional agent architecture (using an appraisal mechanism) the robot was built with the capabilities of emotional appraisal and thus was able to express and share its emotions verbally throughout the game. Contrary to what was expected, emotional sharing in this context seemed to damage the social interaction with the users.}, booktitle = {2015 AAAI Fall Symposium Series}, journal = {AAAI Fall Symposium Series}, keywords = {Social Robotic Companions;}, month = {September}, pages = {107-110}, title = {More May Be Less: Emotional Sharing in an Autonomous Social Robot}, year = {2015}, author = {Sofia Petisca and João Dias and Ana Paiva} }