The Experts below are selected from a list of 174 Experts worldwide ranked by ideXlab platform
Jean-claude Martin - One of the best experts on this subject based on the ideXlab platform.
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Video analysis of approach-avoidance behaviors of teenagers speaking with virtual agents
ICMI 2013 - Proceedings of the 2013 ACM International Conference on Multimodal Interaction, 2013Co-Authors: David Antonio Gómez Jáuregui, Léonor Philip, Mahin Bailly, C??line Clavel, Stéphane Padovani, Jean-claude MartinAbstract:Analysis of non-verbal behaviors in HCI allows understanding how individuals apprehend and adapt to different situations of interaction. This seems particularly relevant when considering tasks such as speaking in a foreign language, which is known to elicit anxiety. This is even truer for young users for whom Negative pedagogical feedbacks might have a strong Negative impact on their motivation to learn. In this paper, we consider the approach-avoidance behaviors of teenagers speaking with virtual agents when using an e-learning platform for learning English. We designed an algorithm for processing the video of these teenagers outside laboratory conditions (e.g. a classical collective classroom in a secondary school) using a webcam. This algorithm processes the video of the user and computes the inter-ocular distance. The anxiety of the users is also collected with questionnaires. Results show that the inter-ocular distance enables to discriminate between approach and avoidance behaviors of teenagers reacting to positive or Negative Stimulus. This simple metric collected via video processing enables to detect an approach behavior related to a positive Stimulus and an avoidance behavior related to a Negative Stimulus. Furthermore, we observed that these automatically detected approach-avoidance behaviors are correlated with anxiety. © 2013 ACM.
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ICMI - Video analysis of approach-avoidance behaviors of teenagers speaking with virtual agents
Proceedings of the 15th ACM on International conference on multimodal interaction - ICMI '13, 2013Co-Authors: David Antonio Gómez Jáuregui, Léonor Philip, Mahin Bailly, C??line Clavel, Stéphane Padovani, Jean-claude MartinAbstract:Analysis of non-verbal behaviors in HCI allows understanding how individuals apprehend and adapt to different situations of interaction. This seems particularly relevant when considering tasks such as speaking in a foreign language, which is known to elicit anxiety. This is even truer for young users for whom Negative pedagogical feedbacks might have a strong Negative impact on their motivation to learn. In this paper, we consider the approach-avoidance behaviors of teenagers speaking with virtual agents when using an e-learning platform for learning English. We designed an algorithm for processing the video of these teenagers outside laboratory conditions (e.g. a classical collective classroom in a secondary school) using a webcam. This algorithm processes the video of the user and computes the inter-ocular distance. The anxiety of the users is also collected with questionnaires. Results show that the inter-ocular distance enables to discriminate between approach and avoidance behaviors of teenagers reacting to positive or Negative Stimulus. This simple metric collected via video processing enables to detect an approach behavior related to a positive Stimulus and an avoidance behavior related to a Negative Stimulus. Furthermore, we observed that these automatically detected approach-avoidance behaviors are correlated with anxiety.
Armina Janyan - One of the best experts on this subject based on the ideXlab platform.
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Reversing the affordance effect: Negative Stimulus–response compatibility observed with images of graspable objects
Cognitive Processing, 2015Co-Authors: Kiril Kostov, Armina JanyanAbstract:Responses are faster when the task-irrelevant orientation of a graspable object’s handle corresponds to the location of the response hand. Over the past decade, research has focused on dissociating between two competing accounts of this effect: One rooted in motoric object affordances and the other resting on attentional mechanisms (i.e., Simon effect). Following this avenue of inquiry, we conducted three experiments, in which subjects had to respond bimanually to grayscale photographs of frying pans and saucepans. In addition to horizontal orientation (control/leftward/rightward handles), Experiments 1 and 2 also manipulated the direction of exogenous attentional shifts (left/right) using laterally placed, colored markers within the objects. Both experiments yielded regular Simon effects based on the location of the colored markers. However, in stark contrast to previous research, a Negative Stimulus–response compatibility effect was obtained with regard to the orientation of the graspable handles. This reversed affordance effect was also observed using the original, unedited grayscale photographs (Experiment 3), which suggested that its occurrence cannot be attributed to the use of colored markers. These unexpected findings appear to support the idea that Simon effects result from automatic and exogenous attentional orienting mechanisms, whereas affordances arise from controlled and endogenous attentional processes. Such a top-down attentional account of affordance can accommodate the observed reversal of the effect in the context of task characteristics.
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reversing the affordance effect Negative Stimulus response compatibility observed with images of graspable objects
Cognitive Processing, 2015Co-Authors: Kiril Kostov, Armina JanyanAbstract:Responses are faster when the task-irrelevant orientation of a graspable object’s handle corresponds to the location of the response hand. Over the past decade, research has focused on dissociating between two competing accounts of this effect: One rooted in motoric object affordances and the other resting on attentional mechanisms (i.e., Simon effect). Following this avenue of inquiry, we conducted three experiments, in which subjects had to respond bimanually to grayscale photographs of frying pans and saucepans. In addition to horizontal orientation (control/leftward/rightward handles), Experiments 1 and 2 also manipulated the direction of exogenous attentional shifts (left/right) using laterally placed, colored markers within the objects. Both experiments yielded regular Simon effects based on the location of the colored markers. However, in stark contrast to previous research, a Negative Stimulus–response compatibility effect was obtained with regard to the orientation of the graspable handles. This reversed affordance effect was also observed using the original, unedited grayscale photographs (Experiment 3), which suggested that its occurrence cannot be attributed to the use of colored markers. These unexpected findings appear to support the idea that Simon effects result from automatic and exogenous attentional orienting mechanisms, whereas affordances arise from controlled and endogenous attentional processes. Such a top-down attentional account of affordance can accommodate the observed reversal of the effect in the context of task characteristics.
Léonor Philip - One of the best experts on this subject based on the ideXlab platform.
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Video analysis of approach-avoidance behaviors of teenagers speaking with virtual agents
ICMI 2013 - Proceedings of the 2013 ACM International Conference on Multimodal Interaction, 2013Co-Authors: David Antonio Gómez Jáuregui, Léonor Philip, Mahin Bailly, C??line Clavel, Stéphane Padovani, Jean-claude MartinAbstract:Analysis of non-verbal behaviors in HCI allows understanding how individuals apprehend and adapt to different situations of interaction. This seems particularly relevant when considering tasks such as speaking in a foreign language, which is known to elicit anxiety. This is even truer for young users for whom Negative pedagogical feedbacks might have a strong Negative impact on their motivation to learn. In this paper, we consider the approach-avoidance behaviors of teenagers speaking with virtual agents when using an e-learning platform for learning English. We designed an algorithm for processing the video of these teenagers outside laboratory conditions (e.g. a classical collective classroom in a secondary school) using a webcam. This algorithm processes the video of the user and computes the inter-ocular distance. The anxiety of the users is also collected with questionnaires. Results show that the inter-ocular distance enables to discriminate between approach and avoidance behaviors of teenagers reacting to positive or Negative Stimulus. This simple metric collected via video processing enables to detect an approach behavior related to a positive Stimulus and an avoidance behavior related to a Negative Stimulus. Furthermore, we observed that these automatically detected approach-avoidance behaviors are correlated with anxiety. © 2013 ACM.
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ICMI - Video analysis of approach-avoidance behaviors of teenagers speaking with virtual agents
Proceedings of the 15th ACM on International conference on multimodal interaction - ICMI '13, 2013Co-Authors: David Antonio Gómez Jáuregui, Léonor Philip, Mahin Bailly, C??line Clavel, Stéphane Padovani, Jean-claude MartinAbstract:Analysis of non-verbal behaviors in HCI allows understanding how individuals apprehend and adapt to different situations of interaction. This seems particularly relevant when considering tasks such as speaking in a foreign language, which is known to elicit anxiety. This is even truer for young users for whom Negative pedagogical feedbacks might have a strong Negative impact on their motivation to learn. In this paper, we consider the approach-avoidance behaviors of teenagers speaking with virtual agents when using an e-learning platform for learning English. We designed an algorithm for processing the video of these teenagers outside laboratory conditions (e.g. a classical collective classroom in a secondary school) using a webcam. This algorithm processes the video of the user and computes the inter-ocular distance. The anxiety of the users is also collected with questionnaires. Results show that the inter-ocular distance enables to discriminate between approach and avoidance behaviors of teenagers reacting to positive or Negative Stimulus. This simple metric collected via video processing enables to detect an approach behavior related to a positive Stimulus and an avoidance behavior related to a Negative Stimulus. Furthermore, we observed that these automatically detected approach-avoidance behaviors are correlated with anxiety.
Mahin Bailly - One of the best experts on this subject based on the ideXlab platform.
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Video analysis of approach-avoidance behaviors of teenagers speaking with virtual agents
ICMI 2013 - Proceedings of the 2013 ACM International Conference on Multimodal Interaction, 2013Co-Authors: David Antonio Gómez Jáuregui, Léonor Philip, Mahin Bailly, C??line Clavel, Stéphane Padovani, Jean-claude MartinAbstract:Analysis of non-verbal behaviors in HCI allows understanding how individuals apprehend and adapt to different situations of interaction. This seems particularly relevant when considering tasks such as speaking in a foreign language, which is known to elicit anxiety. This is even truer for young users for whom Negative pedagogical feedbacks might have a strong Negative impact on their motivation to learn. In this paper, we consider the approach-avoidance behaviors of teenagers speaking with virtual agents when using an e-learning platform for learning English. We designed an algorithm for processing the video of these teenagers outside laboratory conditions (e.g. a classical collective classroom in a secondary school) using a webcam. This algorithm processes the video of the user and computes the inter-ocular distance. The anxiety of the users is also collected with questionnaires. Results show that the inter-ocular distance enables to discriminate between approach and avoidance behaviors of teenagers reacting to positive or Negative Stimulus. This simple metric collected via video processing enables to detect an approach behavior related to a positive Stimulus and an avoidance behavior related to a Negative Stimulus. Furthermore, we observed that these automatically detected approach-avoidance behaviors are correlated with anxiety. © 2013 ACM.
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ICMI - Video analysis of approach-avoidance behaviors of teenagers speaking with virtual agents
Proceedings of the 15th ACM on International conference on multimodal interaction - ICMI '13, 2013Co-Authors: David Antonio Gómez Jáuregui, Léonor Philip, Mahin Bailly, C??line Clavel, Stéphane Padovani, Jean-claude MartinAbstract:Analysis of non-verbal behaviors in HCI allows understanding how individuals apprehend and adapt to different situations of interaction. This seems particularly relevant when considering tasks such as speaking in a foreign language, which is known to elicit anxiety. This is even truer for young users for whom Negative pedagogical feedbacks might have a strong Negative impact on their motivation to learn. In this paper, we consider the approach-avoidance behaviors of teenagers speaking with virtual agents when using an e-learning platform for learning English. We designed an algorithm for processing the video of these teenagers outside laboratory conditions (e.g. a classical collective classroom in a secondary school) using a webcam. This algorithm processes the video of the user and computes the inter-ocular distance. The anxiety of the users is also collected with questionnaires. Results show that the inter-ocular distance enables to discriminate between approach and avoidance behaviors of teenagers reacting to positive or Negative Stimulus. This simple metric collected via video processing enables to detect an approach behavior related to a positive Stimulus and an avoidance behavior related to a Negative Stimulus. Furthermore, we observed that these automatically detected approach-avoidance behaviors are correlated with anxiety.
C??line Clavel - One of the best experts on this subject based on the ideXlab platform.
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Video analysis of approach-avoidance behaviors of teenagers speaking with virtual agents
ICMI 2013 - Proceedings of the 2013 ACM International Conference on Multimodal Interaction, 2013Co-Authors: David Antonio Gómez Jáuregui, Léonor Philip, Mahin Bailly, C??line Clavel, Stéphane Padovani, Jean-claude MartinAbstract:Analysis of non-verbal behaviors in HCI allows understanding how individuals apprehend and adapt to different situations of interaction. This seems particularly relevant when considering tasks such as speaking in a foreign language, which is known to elicit anxiety. This is even truer for young users for whom Negative pedagogical feedbacks might have a strong Negative impact on their motivation to learn. In this paper, we consider the approach-avoidance behaviors of teenagers speaking with virtual agents when using an e-learning platform for learning English. We designed an algorithm for processing the video of these teenagers outside laboratory conditions (e.g. a classical collective classroom in a secondary school) using a webcam. This algorithm processes the video of the user and computes the inter-ocular distance. The anxiety of the users is also collected with questionnaires. Results show that the inter-ocular distance enables to discriminate between approach and avoidance behaviors of teenagers reacting to positive or Negative Stimulus. This simple metric collected via video processing enables to detect an approach behavior related to a positive Stimulus and an avoidance behavior related to a Negative Stimulus. Furthermore, we observed that these automatically detected approach-avoidance behaviors are correlated with anxiety. © 2013 ACM.
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ICMI - Video analysis of approach-avoidance behaviors of teenagers speaking with virtual agents
Proceedings of the 15th ACM on International conference on multimodal interaction - ICMI '13, 2013Co-Authors: David Antonio Gómez Jáuregui, Léonor Philip, Mahin Bailly, C??line Clavel, Stéphane Padovani, Jean-claude MartinAbstract:Analysis of non-verbal behaviors in HCI allows understanding how individuals apprehend and adapt to different situations of interaction. This seems particularly relevant when considering tasks such as speaking in a foreign language, which is known to elicit anxiety. This is even truer for young users for whom Negative pedagogical feedbacks might have a strong Negative impact on their motivation to learn. In this paper, we consider the approach-avoidance behaviors of teenagers speaking with virtual agents when using an e-learning platform for learning English. We designed an algorithm for processing the video of these teenagers outside laboratory conditions (e.g. a classical collective classroom in a secondary school) using a webcam. This algorithm processes the video of the user and computes the inter-ocular distance. The anxiety of the users is also collected with questionnaires. Results show that the inter-ocular distance enables to discriminate between approach and avoidance behaviors of teenagers reacting to positive or Negative Stimulus. This simple metric collected via video processing enables to detect an approach behavior related to a positive Stimulus and an avoidance behavior related to a Negative Stimulus. Furthermore, we observed that these automatically detected approach-avoidance behaviors are correlated with anxiety.
