Communicating Assertiveness in Robotic Storytellers

Paradeda, Raul Benites; Ferreira, Maria José; Martinho, Carlos; Paiva, Ana

doi:10.1007/978-3-030-04028-4_51

Cited by 6 publications

(6 citation statements)

References 20 publications

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“…Our results from the manipulation verification revealed that the players that interacted with NPCs with different assertiveness levels could understand that they were in the presence of NPCs with distinct traits. This finding validates our trait manipulation, reinforcing the fact that the configuration of a high level of assertiveness and low level of assertiveness suggested in [49] contributed to this clear distinction between the NPCs. This finding can be useful, for instance, in scenarios in which the game developer wants to persuade a player to accept a specific mission or to follow a determined path.…”

Section: Discussionsupporting

confidence: 86%

“…The manipulation of the level of assertiveness displayed by each robot was achieved through the manipulation of four physical aspects of the robots' behaviour; namely (a) pitch, (b) rate of speech, (c) posture, and (d) eye gaze behaviour (see Table 1). Following the findings and validation presented in [49], the voice and posture of the robots were manipulated to convey different levels of assertiveness. The manipulated parameters in the robot's voice were pitch (with values x-low, default and x-high) and speech rate (values set as medium and +20%) 6 .…”

Section: Manipulationmentioning

confidence: 99%

“…Furthermore, since both robots had the same embodiment, we also used the names suggested in [49] in order to ease their distinction by the participants. In this context, the robotic NPC displaying higher levels of assertiveness was called Emys, whereas the one displaying low levels of this trait was named Glin.…”

Section: Manipulationmentioning

confidence: 99%

See 2 more Smart Citations

The Role of Assertiveness in a Storytelling Game with Persuasive Robotic Non-Player Characters

Paradeda

Ferreira

Oliveira

et al. 2019

Proceedings of the Annual Symposium on Computer-Human Interaction in Play

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Can social agents be assertive and persuade users? To what extent do the persuasion abilities of robots depend on the users' own traits? In this paper, we describe the results of a study in which participants interacted with robotic Non-Player Characters (NPC) displaying different levels of assertiveness (high and low), in a storytelling scenario. We sought to understand how the level of assertiveness displayed by the robots impacted the participants' decision-making process and game experience. Our results suggest that NPCs displaying lower levels of assertiveness evoke more positive emotional responses but are not more effective at influencing players' decisions when compared to NPCs displaying higher levels of this trait. However, NPCs displaying a personality trait are more effective persuaders than NPCs not displaying this feature. Overall, this paper highlights the importance of considering the player's personality and its relation to task-specific attributes during the process of game design.

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Section: Discussionsupporting

confidence: 86%

Section: Manipulationmentioning

confidence: 99%

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The Role of Assertiveness in a Storytelling Game with Persuasive Robotic Non-Player Characters

Paradeda

Ferreira

Oliveira

et al. 2019

Proceedings of the Annual Symposium on Computer-Human Interaction in Play

Self Cite

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“…-A sustained and direct eye-gaze, staring at the users to provide hierarchical cue and to establish asymmetric positions due to the task execution [48,50]; -Semantic gestures and posture turned to the user; -A medium-high tone of voice (75%) and high-speed of speech (90%) to define an asymmetric relationship expressing power and status [48]. A lower tone of voice is also related to more assertive communication [57]; -Formal language typical of asymmetric relationship; -Motivational sentences were: "Don't get distracted! ", "You need to move!…”

Section: Authoritarian Peppermentioning

confidence: 99%

“Don’t Get Distracted!”: The Role of Social Robots’ Interaction Style on Users’ Cognitive Performance, Acceptance, and Non-Compliant Behavior

Maggi

Dell’Aquila

Cucciniello

et al. 2020

Int J of Soc Robotics

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Social robots are developed to provide companionship and assistance in the daily life of the children, older, and disable people but also have great potential as educational technology by facilitating learning. In these application areas, a social robot can take the role of a coach by training and assisting individuals also in cognitive tasks. Since a robot’s interaction style affects users’ trust and acceptance, customizing its behavior to the proposed tasks could, potentially, have an impact on the users’ performance. To investigate these phenomena, we enrolled sixty volunteers and endowed a social robot with a friendly and an authoritarian interaction style. The aim was to explore whether and how the robot’s interaction style could enhance users’ cognitive performance during a psychometric evaluation. The results showed that the authoritarian interaction style seems to be more appropriate to improve the performance when the tasks require high cognitive demands. These differences in cognitive performance between the groups did not depend on users’ intrinsic characteristics, such as gender and personality traits. Nevertheless, in the authoritarian condition, participants’ cognitive performance was related to their trust and the acceptance of the technology. Finally, we found that users’ non-compliant behavior was not related to their personality traits. This finding indirectly supports the role of the robot’s interaction style in influencing the compliance behavior of the users.

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“…In our previous studies [29][30][31][32][33][34][35], persuasion strategies were individually used to assess their impact on people. Thus, the strategies that obtained interesting results were refined and adapted to perform combined in this study.…”

Section: Manipulationsmentioning

confidence: 99%

Persuasion Strategies Using a Social Robot in an Interactive Storytelling Scenario

Paradeda

Martinho

Paiva

2020

Proceedings of the 8th International Conference on Human-Agent Interaction

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The behaviour of a person in a given situation can be explained understanding his personality traits. In this sense, the identification of these traits can be a great value to achieve personalised social influence. Although there are several models of persuasion, few of them take into account the person's personality traits. For this reason, this work describes a persuasion study that takes into account a person's personality. We develop a storytelling decision-making scenario, where the participant receives influencing messages to follow a pattern of behaviour determined by a persuasive agent (an autonomous social robot with assertive behaviour). From the study, we find evidence that the model used within the proposed scenario managed to make participants more engaged in the activity. We found pieces of evidence that the levels of assertiveness of a person can influence their attitude and perception by an agent. Also, we identify that persuasion strategy which uses persuasive arguments are more efficient than strategies that have no arguments. Finally, our proposed persuasion strategies have achieved a good level of successful influence. CCS CONCEPTS • Computer systems organization → Robotic autonomy; • Human-centered computing → Empirical studies in HCI ; Laboratory experiments.

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Communicating Assertiveness in Robotic Storytellers

Cited by 6 publications

References 20 publications

The Role of Assertiveness in a Storytelling Game with Persuasive Robotic Non-Player Characters

The Role of Assertiveness in a Storytelling Game with Persuasive Robotic Non-Player Characters

“Don’t Get Distracted!”: The Role of Social Robots’ Interaction Style on Users’ Cognitive Performance, Acceptance, and Non-Compliant Behavior

Persuasion Strategies Using a Social Robot in an Interactive Storytelling Scenario

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