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1.
Behav Brain Sci ; 45: e286, 2022 11 18.
Article in English | MEDLINE | ID: mdl-36396391

ABSTRACT

Dubourg and Baumard explain why fictional worlds are attractive to consumers. A complete account of fictional worlds, however, should also explain why some people create them. Creation is a costly and time-consuming process that does not resemble exploration but does resemble the culturally universal phenomenon of knowledge specialization.

2.
Evol Hum Sci ; 3: e37, 2021.
Article in English | MEDLINE | ID: mdl-37588549

ABSTRACT

People everywhere acquire high levels of conceptual knowledge about their social and natural worlds, which we refer to as ethnoscientific expertise. Evolutionary explanations for expertise are still widely debated. We analysed ethnographic text records (N = 547) describing ethnoscientific expertise among 55 cultures in the Human Relations Area Files to investigate the mutually compatible roles of collaboration, proprietary knowledge, cultural transmission, honest signalling, and mate provisioning. We found relatively high levels of evidence for collaboration, proprietary knowledge, and cultural transmission, and lower levels of evidence for honest signalling and mate provisioning. In our exploratory analyses, we found that whether expertise involved proprietary vs. transmitted knowledge depended on the domain of expertise. Specifically, medicinal knowledge was positively associated with secretive and specialised knowledge for resolving uncommon and serious problems, i.e. proprietary knowledge. Motor skill-related expertise, such as subsistence and technological skills, was positively associated with broadly competent and generous teachers, i.e. cultural transmission. We also found that collaborative expertise was central to both of these models, and was generally important across different knowledge and skill domains.

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