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While robots have advanced in understanding their environments, collaborative tasks demand a deeper comprehension of human intentions to mitigate uncertainty. Anticipatory and proactive behaviours are pivotal in enhancing Human-Robot Interactions (HRI), yet literature often conflates these terms. This study elucidates the distinction between anticipation and proactivity, offering clear definitions and exemplifying their implications through a handover scenario. Through a user study with 24 volunteers performing a total of 72 experiments, we have found that humans are able to distinguish both behaviours and that there is a statistically significant increase in the anthropomorphism of the robot when it behaves proactively. Additionally, both anticipation and proactivity show statistically significant increases in multiple aspects of effective HRI (fluency, comfort, performance, etc.). However, no clear preference for either has been detected.

IEEE RO-MAN 2024

Anticipation and Proactivity. Unraveling Both Concepts in Human-Robot Interaction through a Handover Example

handover

user study

physical human-robot interaction

intent detection

**31st IEEE International Conference on Robot & Human Interactive Communication**
 This conference is a leading forum where state-of-the-art innovative results, the latest developments as well as future perspectives relating to robot and human interactive communication are presented and discussed.
 
 The conference covers a wide range of topics related to Robot and Human Interactive Communication, involving theories, methodologies, technologies, empirical and experimental studies. Papers related to the study of robotic technology, psychology, cognitive science, artificial intelligence, human factors, ethics and policies, interaction-based robot design and other topics related to human-robot interaction are welcome.
 
 **CONFERENCE THEME:**
 Social, asocial, and antisocial robots
 
 Robots are starting to populate our lives: at work, in our homes, hotels, shops. However, not everybody is comfortable with robots finding a place in society. For example, people may be afraid that robots will replace humans in their jobs. This belief is exacerbated by the media that, on one side, raise expectations of robots’ capabilities, while amplifying fears and worries on the other side.
 
 In the next years, due to the increasing request for interaction with people in social environments, academic research and market analyses predict that robots will become more and more “social”. But, at the same time, robots may incur the risk of being perceived as “asocial” as their pervasiveness in everyday environments may become an obstacle to social interaction between humans. Or they may even be rejected as “antisocial” if researchers do not take care to develop robots that behave according to the customs and habits of the communities where they are expected to operate.
 
 To prevent this from happening, robotic researchers can no longer take the luxury of being mere technicians. They must be capable of addressing all the challenges raised by future robot-populated communities in a multidisciplinary way. They need to share their knowledge with the public to make people aware of what robots really are, what expectations we can have from them, the risks we may incur, and the possible mitigation plans.
 
 While being open to any kind of contribution related to Human-Robot Interactive Communication, the RO-MAN 2022 conference will emphasize these aspects of robotic research. How can we create robots capable of being welcomed as our assistants and companions in society while, at the same time, not being perceived as “asocial” or “antisocial?” How can we create robots perceived as facilitators of the natural development of human beings and communities, rather than obstacles?
 
 Contributions from different disciplines, not exclusively related to technological development, will be welcomed as crucial to pave the way to global acceptance of future robots with an informed attitude.
 
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IEEE RO-MAN 2022

31st IEEE International Conference on Robot & Human Interactive Communication
This conference is a leading forum where state-of-the-art innovative results, the latest developments as well as future perspectives relating to robot and human interactive communication are presented and discussed.

technical paper

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Dear Colleagues and Friends,

The 33rd IEEE International Conference on Robot and Human Interactive Communication, IEEE RO-MAN 2024, was held at Pasadena Convention Center in Pasadena, USA.

The theme of the IEEE RO-MAN 2024 was **“Embracing Human-Centered HRI”**.

With the continuous technological effort of understanding human needs, creating human-desired robotic systems, and developing real human user experiences, we are marching together towards building a promising and excellent human quality of life, all for our wellness and our next generation.

The conference provided a forum for researchers and practitioners to discuss a variety of topics related to the broad theme of Robot and Human Interactive Communication involving theories, methodologies, technologies, empirical and experimental studies, and generated more insights for the future of Robot and Human Interactive Communication!

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The 33rd IEEE International Conference on Robot and Human Interactive Communication was held in Pasadena, California, USA. The theme of the IEEE RO-MAN 2024 was “Embracing Human-Centered HRI”.

To enable a comprehensive human-robot interaction, it is essential to refer to human-human collaboration and decode complex non-verbal communication aspects that are essential for adaptive decision-making and task success. Indeed, for a robust collaboration, it is useful to understand the intricacies and complexities of human communication during human-human interaction and to compare it with the human-robot interaction case. We study this communication exchange and information flow by evaluating the leader/follower behavior during physical interaction with different agents and different control types, focusing on non-verbal cues, to identify collaborative or competitive attitudes. To achieve this, we consider a dynamic task of collaboratively catching a falling object, which, by its nature, favors non-verbal communication channels. Multiple subjects performed the same task with different collaborative agents (i.e., human and robot) and with different control modalities, to evaluate the leadership roles and their implication on task success (successfully catching the object while minimizing impact forces). We analyze how the impact force minimization induced by the velocity matching optimal planner affects the catching success rate. The information flow is analyzed, and the leadership roles are identified. Further qualitative data is gathered from questionnaires and compared with respect to the analytic results.

Evaluating Leadership Roles in Human-Robot Interaction Via Highly Dynamic Collaborative Tasks

This paper investigates how conversational agents that are embedded in smart environments should present themselves socially. In an online study, we simulate a future space habitat in which astronauts (participants) interact with one or more agents to complete several tasks related to science, maintenance, and inventory. We examine effects of agent affiliation (affiliation with a user, affiliation with a domain, or affiliation with all users and all domains) and narrative perspective (first- vs. third-person references to parts of the environment) on mental models of the smart environment as one or multiple entities, trust, performance, and social variables. Our findings suggest that in this type of setting, interacting with a single agent may increase mental demand, and that agents that speak about embodied interaction in third person are perceived as more trustworthy and competent than agents that speak in first person.

Contrasting Affiliation and Reference Cues for Conversational Agents in Smart Environments

This study explored how a table-top robot as a recipient of explanations can be applied to the education of students with autism spectrum disorder and intellectual disability. Four 17-year-old participants were recruited from a special needs school. We observed their engagement in assigned tasks and any significant interactions with the robot during the three personalized learning sessions in the school environment. During sessions without a robot, each student was asked to solve arithmetic questions related to purchasing items. During sessions with a robot, each student was required to not only solve questions but also explain the processes or results of simple calculations to the robot. We examined the behavioral, affective, and cognitive engagement of each participant during personalized learning sessions. The results showed that participants solved problems faster, more accurately, or with fewer distractions in the with-robot conditions compared to the task-only conditions. It suggests that this approach, where students explain what they know to a robot, might be effectively adopted for students in special needs schools. Future research should examine the role of robots more comprehensively, acknowledging the limitations of this study, such as the measurement of only three sessions.

Students with Autism Spectrum Disorder and Intellectual Disability Teach a Robot

The landscape of education with social robots is evolving, especially within the realm of music education. However, past studies have focused on children as music learners and such verbal behaviors as praise. Therefore, it remains unknown whether existing studies are effective for adult learners in musical education as well as how to effectively design the non-verbal behaviors of robots. This study investigates the effective behaviors of social robots by comparing three kinds of listening behaviors: none, nodding (simple listening), and enjoying (affective listening). We developed a music education support system that consists of a social robot and a MIDI keyboard and conducted an experiment with adult participants. Our experimental results described the advantages of affective-listening behavior during music education over simple listening and non-listening based on gender.

Effects of Listening Behaviors of a Social Robot on Adult's Motivation and Performance in Piano Practice

Stroke-induced aphasia, an acquired speech impairment, poses significant challenges to individuals' communication abilities. Our robot-assisted speech training app aims to facilitate home-based, self-administered training for individuals with aphasia to complement their speech therapy. We evaluated our app in a single-session study with four individuals with aphasia in a rehabilitation setting. Each participant had a different severity grade of the condition, including one case of global aphasia. Our findings suggest an overall positive user experience, with indications that the training facilitated by the robot is suitable for individuals across all severity grades of aphasia, though exercise customization is crucial. Participants, even those with limited technical experience, adapted to using the system by themselves quickly. However, usability issues specific to this diverse target group were noted, such as the length of explanations and the abundant use of robot gestures, which will be addressed in future iterations.

"Repeat after Me" - Exploring Robot-Assisted Speech Training for Varied Aphasia Severities*

Social robots are being introduced in a variety of educational domains with great success. These social robots are often designed by drawing inspiration from practices held by human teachers. Contingent mediations are a prime example of a high-quality teaching practice that supports better outcomes in human-human teaching. This can inform the design of social robots. Current research on robot use in education has focused on curriculum-level contingent mediations where the difficulty level of subsequent tasks are adjusted to the current capabilities of a learner. However, task-level contingent mediations that provide support for students learning during a specific task remain unexplored. This research investigates whether patterns of task-level mediations differ between a robot, virtual, and human agent, as well as their effects on learning outcomes. To investigate these research questions, we designed instruction that utilizes contingent mediational flows, based on formative assessment data, to be delivered by a human, robot, and virtual agent to teach grade 3-5 children science words. We identified 23 unique instructional patterns. Then, we compared these patterns across teaching agents and their effects on learning outcomes. Overall, our study demonstrated that high-quality contingent mediations support childrens science vocabulary in learning regardless of the teaching agent.

Exploring Task-Level Contingent Mediations for Vocabulary Instruction across Robot, Virtual, and Human Teachers

Parental estrangement can cause long-term harm to socio-emotional skills, mental health and wellbeing. This is pronounced for children who experienced trauma. Robo- Therapists have been used to train children to express emotions, but such robots are often human replacements and tend to be too costly to deploy widely. We propose e-MoBo, a low-cost, non-humanoid Robo-Mediator of our own design to train childrens socio-emotional skills towards creating stronger relationships with others. We report on the developing e-MoBo and results of a field study with the current prototype and 14 neurotypical children, ages 5-9, as we prepare to deploy e-MoBo in a residential center with traumatized children. Our results suggest that e-MoBo, compared to a control, helps children express emotions, offering the promise of a low-cost, nonanthropomorphic, Robo-Mediator meeting childrens needs.

E-MoBo, a Low-Cost, “Robo-Mediator” Helping Therapists Teach Children How to Express Emotions Insights from Field Testing

Robots powered by Artificial Intelligence require continuous sensing to function and interact autonomously with their environment. This may create concerns for their users. Here, we describe a study in the context of an office environment equipped with autonomous delivery robots. Our study aims to understand the employees' current comprehension of the data captured by the robots, the nature of their concerns and ways to mitigate those. We found that the employees have little knowledge about data capture and that providing such knowledge can go either way, reassuring or generating new concerns which are often contextual. We qualitatively analysed reasons for having or not having concerns. Our findings include that trust in the employer is an important factor limiting them.

Investigating Privacy in the Context of Office Delivery Robots

Despite advances in areas such as the personalization of robots, sustaining adoption of robots for long-term use in families remains a challenge. Recent studies have identified integrating robots into families' routines and rituals as a promising approach to support long-term adoption. However, few studies explored the integration of robots into family routines and there is a gap in systematic measures to capture family preferences for robot integration. Building upon existing routine inventories, we developed Family-Robot Routines Inventory (FRRI), with 24 family routines and 24 child routine items, to capture parents' attitudes toward and expectations from the integration of robotic technology into their family routines. Using this inventory, we collected data from 150 parents through an online survey. Our analysis indicates that parents had varying perceptions for the utility of integrating robots into their routines. For example, parents found robot integration to be more helpful in children's individual routines, than to the collective routines of their families. We discuss the design implications of these preliminary findings, and how they may serve as a first step toward understanding the diverse challenges and demands of designing and integrating household robots for families.

Robots in Family Routines: Development of and Initial Insights from the Family-Robot Routines Inventory

A user-centered method of parameterizing robotic system is indispensable to enable workers with lower qualification levels the access to robotic systems. In this paper, different ways and types of communication are investigated to increase the usability during the programming of a movable robotic cell utilized for mounting processes inside a production line. Thereto, the entire usability circle given by the ISO 9241-210 is applied. Using the feedback of 13 participants from an initial formative evaluation inside a real production line, usability problems and six requirement categories were identified. Applying the prototypical design, we evaluated four possibilities of multimodal and bidirectional communication utilizing audio, haptic and visual channels. The results from the final usability study in the laboratory reveal that haptic plus visual input combined with visual plus audio feedback is assessed as most intuitive. Pre-experience with robots showed no significant influence on usability, acceptance and perceived safety in most modalities.

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Evaluating Leadership Roles in Human-Robot Interaction Via Highly Dynamic Collaborative Tasks

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