Persuasion and the expressivity of gestures in humans and machines

Pelachaud, Isabella Poggi amp; Catherine,

doi:10.1093/acprof:oso/9780199231751.003.0017

Cited by 19 publications

(13 citation statements)

References 52 publications

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“…Movement is a very complex parameter including subparameters like direction, velocity, duration, but also the "expressivity parameters" (Hartmann et al, 2002;Poggi, 2007;Poggi et al, 2008) of amplitude, tension, fluidity. Each gesture is defined by the values it assumes with respect to all parameters.…”

Section: Gestures For Intensitymentioning

confidence: 99%

“…We can therefore single out what are the values, in the parameters of gesture, including its expressivity parameters (Hartmann et al, 2002;Poggi & Pelachaud, 2008) that are more apt to convey the dynamic indication "forte": https://ojs.uv.es/index.php/normas/index Junio 2017 | Volumen 7 | Número 1| Pág.42…”

Section: Pertinent Values In the Gesture Parameters Requesting "Forte"mentioning

confidence: 99%

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Signals of intensification and attenuation in orchestra and choir conduction

Poggi

2017

Normas

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Based on a model of communication according to which not only words but also body signals constitute lexicons (Poggi, 2007), the study presented aimes at building a lexicon of conductors’ multimodal behaviours requesting intensification and attenuation of sound intensity. In a corpus of concerts and rehearsals, the conductors’ body signals requesting to play or sing forte, piano, crescendo, diminuendo were analysed through an annotation scheme describing the body signals, their meanings, and their semiotic devices: generic codified (the same as in everyday language); specific codified (shared with laypeople but with specific meanings in conduction); direct iconic, (resemblance between visual and acoustic modality); indirect iconic, (evoking the technical movement by connected movements or emotion expressions). The work outlines a lexicon of the conductors’ signals that in gesture, head, face, gaze, posture, body convey attenuation and intensification in music.

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Section: Gestures For Intensitymentioning

confidence: 99%

Section: Pertinent Values In the Gesture Parameters Requesting "Forte"mentioning

confidence: 99%

Signals of intensification and attenuation in orchestra and choir conduction

Poggi

2017

Normas

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“…Body behaviour plays an important role in persuasive discourse and has been studied extensively [28,39,40]. Although there are no particular gestures that could be categorised as persuasive, some gestures have a persuasive effect as they convey some of the information required in the persuasive structure of discourse [40].…”

Section: Behavioursmentioning

confidence: 99%

Is Two Better than One?

Kantharaju

Franco

Pease

et al. 2018

Proceedings of the 18th International Conference on Intelligent Virtual Agents

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Virtual humans need to be persuasive in order to promote behaviour change in human users. While several studies have focused on understanding the numerous aspects that influence the degree of persuasion, most of them are limited to dyadic interactions. In this paper, we present an evaluation study focused on understanding the effects of multiple agents on user's persuasion. Along with gender and status (authoritative & peer), we also look at type of focus employed by the agent i. e., user-directed where the agent aims to persuade by addressing the user directly and vicarious where the agent aims to persuade the user, who is an observer, indirectly by engaging another agent in the discussion. Participants were randomly assigned to one of the 12 conditions and presented with a persuasive message by one or several virtual agents. A questionnaire was used to measure perceived interpersonal attitude, credibility and persuasion. Results indicate that credibility positively affects persuasion. In general, multiple agent setting, irrespective of the focus, was more persuasive than single agent setting. Although, participants favored user-directed setting and reported it to be persuasive and had an increased level of trust in the agents, the actual change in persuasion score reflects that vicarious setting was the most effective in inducing behaviour change. In addition to this, the study also revealed that authoritative agents were the most persuasive.

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“…But these studies do not explicitly link heightened or lacking efficacy to the specific meanings of gestures, while the reason why a politician using many self-adaptors is not very persuasive might reside in their conveying a need for self-reassurance, hence an impression of low charisma. In fact, [29] and [30], considering gestures as to their semantic import, distinguish them as to their bearing more on the logos, pathos or ethos side of persuasion, that is, as conveying content information, expressing emotion, or presenting the Orator; and, within gestures conveying ethos, they set apart those trying to give an impression of competence vs. benevolence; strangely enough, they find a curious correlation between the gestures more frequently used and the political image the politicians project: more gestures of competence for a Christian Democrat who needs not to exhibit his moral virtues, vs. more gestures of benevolence for a Communist, who needs to reassure voters.…”

Section: Related Workmentioning

confidence: 99%

Discrediting Body. A Multimodal Strategy to Spoil the Other’s Image

D’Errico

Poggi

Vincze

2013

Lecture Notes in Computer Science

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Abstract. In political persuasion the persuader, beside bearing logical arguments and triggering emotions, must present one's own image (one's ethos) of a credible and reliable person, by enhancing three dimensions of it: competence, benevolence and dominance. In a parallel way, s/he may cast discredit on the opponent by criticizing, accusing or insulting on the same three dimensions. The work provides a description and a typology of multimodal discrediting moves focusing on the discrediter's multimodal behavior. Based on an Italian corpus of political debates the analysis points out which facial expressions, gaze behavior, gestures, postures and prosodic features are used to convey discredit concerning the three target features of competence, benevolence and dominance. The qualitative study of discredit signals highlights the close relation with emotions and in this sense particular attention is given to them as triggers of the Audience's evaluation

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Persuasion and the expressivity of gestures in humans and machines

Cited by 19 publications

References 52 publications

Signals of intensification and attenuation in orchestra and choir conduction

Signals of intensification and attenuation in orchestra and choir conduction

Is Two Better than One?

Discrediting Body. A Multimodal Strategy to Spoil the Other’s Image

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