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Judged and Remembered Trustworthiness of Faces Is Enhanced by Experiencing Multisensory Synchrony and Asynchrony in the Right Order.

Toscano H, Schubert TW - PLoS ONE (2015)

Bottom Line: This work builds on the enfacement effect.This typically leads to cognitive and social-cognitive effects similar to self-other merging.The results of both studies show that order of stroking creates a context in which multisensory synchrony can affect the trustworthiness of faces.

View Article: PubMed Central - PubMed

Affiliation: Instituto Universitário de Lisboa (ISCTE-IUL), Centro de Investigação e Intervenção Social, Lisboa, Portugal.

ABSTRACT
This work builds on the enfacement effect. This effect occurs when experiencing a rhythmic stimulation on one's cheek while seeing someone else's face being touched in a synchronous way. This typically leads to cognitive and social-cognitive effects similar to self-other merging. In two studies, we demonstrate that this multisensory stimulation can change the evaluation of the other's face. In the first study, participants judged the stranger's face and similar faces as being more trustworthy after synchrony, but not after asynchrony. Synchrony interacted with the order of the stroking; hence trustworthiness only changed when the synchronous stimulation occurred before the asynchronous one. In the second study, a synchronous stimulation caused participants to remember the stranger's face as more trustworthy, but again only when the synchronous stimulation came before the asynchronous one. The results of both studies show that order of stroking creates a context in which multisensory synchrony can affect the trustworthiness of faces.

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Examples of the faces judged in Study 1 (consent from the person depicted in Fig 1 A was obtained for publication of these images) A) Computerized version of the stranger’s face; B) 35% morph of the stranger’s face; C) 20% morph of the stranger’s face; D) filler face.
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pone.0145664.g001: Examples of the faces judged in Study 1 (consent from the person depicted in Fig 1 A was obtained for publication of these images) A) Computerized version of the stranger’s face; B) 35% morph of the stranger’s face; C) 20% morph of the stranger’s face; D) filler face.

Mentions: Because we wanted to include the actually seen faces in the trustworthiness judgment task, but did not want to have a visible difference between these faces and the morphs, we transformed the images to make them technically similar to the morphs. In particular, we created 3D models of the strangers’ faces with the software Facegen [32]. From these 3D models, we then rendered 2D images. These images, and not the original photos, were shown to participants during the trustworthiness judgment task. Thus, each stranger face that was seen in the video was judged as a computer-generated face. One of the limitations of this method might be related to the fact that while the strangers’ faces during the trustworthiness judgments were computer-generated faces and bald, they were seen in the videos with hair and as natural faces. This might cause some issues, but it enables us to take into account only the structure of the face and not other features such as the hair. Then, we created 80 morphs for each one of the four strangers’ faces with the software Morpheus Photo Mixer (http://www.morpheussoftware.net). The starting faces of these morphs were randomly taken from the Todorov Database which were also generated using Facegen (tlab.princeton.edu/). Moreover, we used filler faces (20 for each one of the strangers), see Fig 1.


Judged and Remembered Trustworthiness of Faces Is Enhanced by Experiencing Multisensory Synchrony and Asynchrony in the Right Order.

Toscano H, Schubert TW - PLoS ONE (2015)

Examples of the faces judged in Study 1 (consent from the person depicted in Fig 1 A was obtained for publication of these images) A) Computerized version of the stranger’s face; B) 35% morph of the stranger’s face; C) 20% morph of the stranger’s face; D) filler face.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4696736&req=5

pone.0145664.g001: Examples of the faces judged in Study 1 (consent from the person depicted in Fig 1 A was obtained for publication of these images) A) Computerized version of the stranger’s face; B) 35% morph of the stranger’s face; C) 20% morph of the stranger’s face; D) filler face.
Mentions: Because we wanted to include the actually seen faces in the trustworthiness judgment task, but did not want to have a visible difference between these faces and the morphs, we transformed the images to make them technically similar to the morphs. In particular, we created 3D models of the strangers’ faces with the software Facegen [32]. From these 3D models, we then rendered 2D images. These images, and not the original photos, were shown to participants during the trustworthiness judgment task. Thus, each stranger face that was seen in the video was judged as a computer-generated face. One of the limitations of this method might be related to the fact that while the strangers’ faces during the trustworthiness judgments were computer-generated faces and bald, they were seen in the videos with hair and as natural faces. This might cause some issues, but it enables us to take into account only the structure of the face and not other features such as the hair. Then, we created 80 morphs for each one of the four strangers’ faces with the software Morpheus Photo Mixer (http://www.morpheussoftware.net). The starting faces of these morphs were randomly taken from the Todorov Database which were also generated using Facegen (tlab.princeton.edu/). Moreover, we used filler faces (20 for each one of the strangers), see Fig 1.

Bottom Line: This work builds on the enfacement effect.This typically leads to cognitive and social-cognitive effects similar to self-other merging.The results of both studies show that order of stroking creates a context in which multisensory synchrony can affect the trustworthiness of faces.

View Article: PubMed Central - PubMed

Affiliation: Instituto Universitário de Lisboa (ISCTE-IUL), Centro de Investigação e Intervenção Social, Lisboa, Portugal.

ABSTRACT
This work builds on the enfacement effect. This effect occurs when experiencing a rhythmic stimulation on one's cheek while seeing someone else's face being touched in a synchronous way. This typically leads to cognitive and social-cognitive effects similar to self-other merging. In two studies, we demonstrate that this multisensory stimulation can change the evaluation of the other's face. In the first study, participants judged the stranger's face and similar faces as being more trustworthy after synchrony, but not after asynchrony. Synchrony interacted with the order of the stroking; hence trustworthiness only changed when the synchronous stimulation occurred before the asynchronous one. In the second study, a synchronous stimulation caused participants to remember the stranger's face as more trustworthy, but again only when the synchronous stimulation came before the asynchronous one. The results of both studies show that order of stroking creates a context in which multisensory synchrony can affect the trustworthiness of faces.

Show MeSH
Related in: MedlinePlus