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Wisdom of the social versus non‐social crowd in face identification
Author(s) -
Jeckeln Géraldine,
Hahn Carina A.,
Noyes Eilidh,
Cavazos Jacqueline G.,
O'Toole Alice J.
Publication year - 2018
Publication title -
british journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.536
H-Index - 92
eISSN - 2044-8295
pISSN - 0007-1269
DOI - 10.1111/bjop.12291
Subject(s) - psychology , dyad , social psychology , social relation , social identity theory , identification (biology) , social perception , face (sociological concept) , social identity approach , social distance , identity (music) , developmental psychology , social group , perception , sociology , medicine , social science , botany , physics , disease , covid-19 , pathology , neuroscience , acoustics , infectious disease (medical specialty) , biology
Face identification is more accurate when people collaborate in social dyads than when they work alone (Dowsett & Burton, 2015, Br. J. Psychol ., 106 , 433). Identification accuracy is also increased when the responses of two people are averaged for each item to create a ‘non‐social’ dyad (White, Burton, Kemp, & Jenkins, 2013, Appl. Cogn. Psychol ., 27 , 769; White et al ., 2015, Proc. R. Soc. B Biol. Sci ., 282 , 20151292). Does social collaboration add to the benefits of response averaging for face identification? We compared individuals, social dyads, and non‐social dyads on an unfamiliar face identity‐matching test. We also simulated non‐social collaborations for larger groups of people. Individuals and social dyads judged whether face image pairs depicted the same‐ or different identities, responding on a 5‐point certainty scale. Non‐social dyads were constructed by averaging the responses of paired individuals. Both social and non‐social dyads were more accurate than individuals. There was no advantage for social over non‐social dyads. For larger non‐social groups, performance peaked at near perfection with a crowd size of eight participants. We tested three computational models of social collaboration and found that social dyad performance was predicted by the decision of the more accurate partner. We conclude that social interaction does not bolster accuracy for unfamiliar face identity matching in dyads beyond what can be achieved by averaging judgements.