Conversational interfaces that interact with humans need to continuously establish, maintain and ... more Conversational interfaces that interact with humans need to continuously establish, maintain and repair common ground in task-oriented dialogues. Uncertainty, repairs and acknowledgements are expressed in user behaviour in the continuous efforts of the conversational partners to maintain mutual understanding. Users change their behaviour when interacting with systems in different forms of embodiment, which affects the abilities of these interfaces to observe users’ recurrent social signals. Additionally, humans are intellectually biased towards social activity when facing anthropomorphic agents or when presented with subtle social cues. Two studies are presented in this paper examining how humans interact in a referential communication task with wizarded interfaces in different forms of embodiment. In study 1 (N = 30), we test whether humans respond the same way to agents, in different forms of embodiment and social behaviour. In study 2 (N = 44), we replicate the same task and agen...
Given the recent advances in robot and synthetic character technology, many researchers are now f... more Given the recent advances in robot and synthetic character technology, many researchers are now focused on ways of establishing social relations between these agents and humans over long periods of time. In this paper, we study the role of social presence in long-term human-computer interaction. We performed an experiment where children played one chess exercise against a social robot over five consecutive weeks. Social presence was evaluated through questionnaires and video evaluations. The results of the experiment suggest that, after the novelty effect of the first weeks, user’s perceived social presence towards the robot starts decreasing.
Conversational interfaces that interact with humans need to continuously establish, maintain and ... more Conversational interfaces that interact with humans need to continuously establish, maintain and repair common ground in task-oriented dialogues. Uncertainty, repairs and acknowledgements are expressed in user behaviour in the continuous efforts of the conversational partners to maintain mutual understanding. Users change their behaviour when interacting with systems in different forms of embodiment, which affects the abilities of these interfaces to observe users’ recurrent social signals. Additionally, humans are intellectually biased towards social activity when facing anthropomorphic agents or when presented with subtle social cues. Two studies are presented in this paper examining how humans interact in a referential communication task with wizarded interfaces in different forms of embodiment. In study 1 (N = 30), we test whether humans respond the same way to agents, in different forms of embodiment and social behaviour. In study 2 (N = 44), we replicate the same task and agen...
Given the recent advances in robot and synthetic character technology, many researchers are now f... more Given the recent advances in robot and synthetic character technology, many researchers are now focused on ways of establishing social relations between these agents and humans over long periods of time. In this paper, we study the role of social presence in long-term human-computer interaction. We performed an experiment where children played one chess exercise against a social robot over five consecutive weeks. Social presence was evaluated through questionnaires and video evaluations. The results of the experiment suggest that, after the novelty effect of the first weeks, user’s perceived social presence towards the robot starts decreasing.
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Papers by André Pereira