Interpersonal Similarity Predicts Shared Neural Representation of Others within Social Groups

dc.contributor.advisorRobert, Chavez
dc.contributor.authorBenadjaoud, Youri
dc.date.accessioned2020-08-11T17:21:44Z
dc.date.available2020-08-11T17:21:44Z
dc.date.issued2020
dc.descriptionProject files are comprised of 1 page pdf and presentation recording in mp4 format.
dc.description.abstractA history of classic research in social psychology has demonstrated that human social groups are highly homophilous- people tend to associate with others similar to themselves. More recently, researchers showed that the brain shows similar effects of homophily, with close individuals showing greater neural response similarity to naturalistic stimuli than unfamiliar individuals (Parkinson et al., 2018). It is an open question, however, whether a similar degree of neural homophily exists when close individuals think of other specific members of their social group. The current study investigated this question by recruiting multiple social network groups that consisted of several close-knit individuals. Using a round robin fMRI design, individuals completed a standard self/other trait judgement task in which each participant was both the perceiver and a target for every other person in the study. Similarity among dyadic pairs were calculated within multivoxel response patterns to each other member of their group. Using the correlation distance between multivoxel pattern response vectors combined with euclidean distance calculations between perceiver ratings of similarity with the target, we fit a multilevel linear effects model that predicted neural similarity from the convergence of dyadic similarity ratings. Our results indicate that the degree of similarity between multivoxel response patterns while individuals were rating the same target were significantly predicted by the the degree to which the perceivers agreed on how similar they were with the target. These findings suggest that people who agree on how similar a person is to themselves tend to have greater similarity in neural representations of others, even within well-known in-group members.en_US
dc.format.mimetypevideo/mp4
dc.format.mimetypeapplication/pdf
dc.identifier.orcidhttps://orcid.org/0000-0002-5380-6898
dc.identifier.urihttps://hdl.handle.net/1794/25439
dc.language.isoen_US
dc.publisherUniversity of Oregon
dc.rightsCreative Commons CC0
dc.subjectpsychologyen_US
dc.subjectneuroscienceen_US
dc.subjectcognitionen_US
dc.subjectsocialen_US
dc.subjectsimilarityen_US
dc.titleInterpersonal Similarity Predicts Shared Neural Representation of Others within Social Groups
dc.typePresentation

Files

Original bundle
Now showing 1 - 2 of 2
Name:
Benadjaoud_Youri_2020urs.mp4
Size:
24 B
Format:
Unknown data format
Loading...
Thumbnail Image
Name:
Benadjaoud_Youri_2020urs.pdf
Size:
4.18 MB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
Name:
license.txt
Size:
2.12 KB
Format:
Plain Text
Description: