Interaction Studies - Volume 18, Issue 2, 2017

Emotional facial expression are an important communication channel between artificial characters and their users. Humans are trained to perceive emotions. Robots and virtual agents can use them to make their inner states transparent. Literature reported that some emotional types, such as anger, are perceived as being more intense than others. Other studies indicated that gender influences the perception. Our study shows that once the individual differences amongst participants are included in the statistical analysis, then the emotion type has no further explanatory power. Artificial characters therefore should adapt to their specific users.

As Artificial Intelligence technology seems poised for a major take-off and changing societal dynamics are creating a high demand for caregivers for elders, children, and those infirmed, robotic caregivers may well be used much more often. This article examines the ethical concerns raised by the use of AI caregivers and concludes that many of these concerns are avoided when AI caregivers operate as partners rather than substitutes. Furthermore, most of the remaining concerns are minor and are faced by human caregivers as well. Nonetheless, because AI caregivers’ systems are learning systems, an AI caregiver could stray from its initial guidelines. Therefore, subjecting AI caregivers to an AI-based oversight system is proposed to ensure that their actions remain both legal and ethical.

This paper proposes extending the appearance of artefacts from human to zoomorphic on the basis of the uncanny valley phenomenon, while simultaneously realising the effects of bionic species, product realism, and gender differences on preschool children’s preferences for artificial animal appearances. In this study, animal toys were created as stimuli and a three-factor experiment was conducted with preschool children. Overall, the children demonstrated significantly stronger preferences for animal toys with extremely high or moderate realism compared with those with extremely low realism. Specifically, the boys preferred the toys with extremely high realism, and the girls preferred those with moderate realism. We conclude with some suggestions regarding the direction of design guidelines for the appearance of artificial animals, to facilitate the design and creation of animal products that promote human–robot interactions and design education.

Past research dedicated to the impact of hierarchy on the autonomic nervous system has focused mainly on dominance. The current study extends this investigation by assessing the effect of social prestige, operationalized through occupational status, and examines whether people react differently when interacting with individuals of high or low occupational status. Participants’ heart rate and electrodermal activity were recorded while they interacted with a confederate who was introduced either as a neurosurgeon (high-status condition) or as a nurse aide (low-status condition). The results show that, contrary to the participants’ skin conductance level, their heart rate was modulated by the confederate’s status. In the high-status condition, participants’ heart rate increased when the “neurosurgeon” approached them, reaching a higher level than when interacting with the person in the low-status condition. We discuss our results in terms of the threats or opportunities that prestige may elicit.

This study investigates a specific aspect of joint attention, that is, the emergence of the sense that one is leading the attentional focus of others. Thirty participants were placed in front of two avatars and had to pay attention to objects that were also attended to by the avatars. Unbeknownst to the participant, the avatars’ gaze orientations were alternately controlled by the participant’s eyes. Eye-tracking data were collected and participants were enquired about their experience to account for their sense of agency. Only five participants noticed that the avatars were following their gaze. The 25 participants who remained unaware that they controlled the avatars nevertheless modified their gazing behavior with an increase in direct gaze toward one of the avatars. This outcome highlights a dissociation between an implicit feeling that a change occurred and the explicit awareness of being the cause of this change.

The classical experimental methodology is ill-suited for the investigation of the behavioral and physiological correlates of natural social interactions. A new experimental approach combining a natural conversation between two persons with control conditions is proposed in this paper. Behavior, including gaze direction and speech, and physiology, including electrodermal activity, are recorded during a discussion between two participants through videoconferencing. Control for the social aspect of the interaction is provided by the use of an artificial agent and of videoed conditions. A cover story provides spurious explanations for the purpose of the experiment and for the recordings, as well as a controlled and engaging topic of discussion. Preprocessing entails transforming raw measurements into boxcar and delta functions time series indicating when a certain behaviour or physiological event is present. The preliminary analysis presented here consists in finding statistically significant differences between experimental conditions in the temporal associations between behavioral and physiological time series. Significant results validate the experimental approach and further developments including more elaborate analysis and adaptation of the paradigm to functional MRI are discussed.

Turn-taking – the coordinated and efficient transition between the roles of sender and receiver in communication – is a fundamental property of conversational interaction. The turn-taking mechanism depends on a variety of linguistic factors related to syntax, semantics and prosody, which have recently been subject to vigorous research. This contrasts with the relative lack of studies on nonverbal visual signals and cues that can be involved in taking turns at talking. In this paper, we consider the relation between turn-transitions and adaptors: a class of nonverbal behaviors prototypically involving touching one’s own body or manipulating external objects. We recorded 10 semi-scripted conversations between a total of 12 subjects and annotated the material for discrete adaptors and turn borders. We found that participants produced discrete adaptors significantly more frequently close to floor transfers (turn borders). Our result goes against the long-standing tradition of interpreting adaptors as unrelated to speech and, more generally, communicative interaction.