Abstract
Group-living is widespread among animals and one of the major advantages of group-living is the ability of groups to solve cognitive problems that exceed individual ability. Humans also make use of collective cognition and have simultaneously developed a highly complex language to exchange information. Here we investigated collective cognition of human groups regarding language use in a realistic situation. Individuals listened to a public announcement and had to reconstruct the sentence alone or in groups. This situation is often encountered by humans, for instance at train stations or airports. Using recent developments in machine speech recognition, we analysed how well individuals and groups reconstructed the sentences from a syntactic (i.e., the number of errors) and semantic (i.e., the quality of the retrieved information) perspective. We show that groups perform better both on a syntactic and semantic level than even their best members. Groups made fewer errors and were able to retrieve more information when reconstructing the sentences, outcompeting even their best group members. Our study takes collective cognition studies to the more complex level of language use in humans.
Highlights
IntroductionGroup-living is widespread among animals and one of the major advantages of group-living is the ability of groups to solve cognitive problems that exceed individual ability [1,2,3,4,5,6]
Group-living is widespread among animals and one of the major advantages of group-living is the ability of groups to solve cognitive problems that exceed individual ability [1,2,3,4,5,6]. This process is known as the many wrongs principle [7], swarm intelligence [1,5], wisdom of crowds [8] or collective cognition (CC) [3]
Participants that started with the individual treatment performed worse during the individual treatment than those that finished with the individual treatment
Summary
Group-living is widespread among animals and one of the major advantages of group-living is the ability of groups to solve cognitive problems that exceed individual ability [1,2,3,4,5,6]. We simulated a realistic scenario to investigate the potential of CC in human verbal communication: individuals listened to a public announcement and had to reconstruct the announcement alone or in groups. This situation is frequently encountered by humans in their daily life, for instance at train stations or airports
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