Speech, stone tool-making and the evolution of language
Publication Date
January 19, 2018
Authors
Dana Michelle Cataldo, Andrea Bamberg Migliano & Lucio Vinicius
Volume
13
Issue
1
Pages
e0191071
DOI
https://dx.plos.org/10.1371/journal.pone.0191071
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0191071
Scopus
85040807076
Mendeley
http://www.mendeley.com/research/speech-stone-toolmaking-evolution-language
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Mendeley | Further Information

{"title"=>"Speech, stone tool-making and the evolution of language", "type"=>"journal", "authors"=>[{"first_name"=>"Dana Michelle", "last_name"=>"Cataldo", "scopus_author_id"=>"57200325107"}, {"first_name"=>"Andrea Bamberg", "last_name"=>"Migliano", "scopus_author_id"=>"23393347700"}, {"first_name"=>"Lucio", "last_name"=>"Vinicius", "scopus_author_id"=>"8927926800"}], "year"=>2018, "source"=>"PLoS ONE", "identifiers"=>{"pui"=>"620256083", "sgr"=>"85040807076", "issn"=>"19326203", "scopus"=>"2-s2.0-85040807076", "doi"=>"10.1371/journal.pone.0191071", "isbn"=>"1111111111"}, "id"=>"b6715368-6fe5-3b1a-a183-5ceda4a2a8be", "abstract"=>"The 'technological hypothesis' proposes that gestural language evolved in early hominins to enable the cultural transmission of stone tool-making skills, with speech appearing later in response to the complex lithic industries of more recent hominins. However, no flintknapping study has assessed the efficiency of speech alone (unassisted by gesture) as a tool-making transmission aid. Here we show that subjects instructed by speech alone underperform in stone tool-making experiments in comparison to subjects instructed through either gesture alone or 'full language' (gesture plus speech), and also report lower satisfaction with their received instruction. The results provide evidence that gesture was likely to be selected over speech as a teaching aid in the earliest hominin tool-makers; that speech could not have replaced gesturing as a tool-making teaching aid in later hominins, possibly explaining the functional retention of gesturing in the full language of modern humans; and that speech may have evolved for reasons unrelated to tool-making. We conclude that speech is unlikely to have evolved as tool-making teaching aid superior to gesture, as claimed by the techno-logical hypothesis, and therefore alternative views should be considered. For example, ges-tural language may have evolved to enable tool-making in earlier hominins, while speech may have later emerged as a response to increased trade and more complex inter-and intra-group interactions in Middle Pleistocene ancestors of Neanderthals and Homo sapi-ens; or gesture and speech may have evolved in parallel rather than in sequence.", "link"=>"http://www.mendeley.com/research/speech-stone-toolmaking-evolution-language", "reader_count"=>13, "reader_count_by_academic_status"=>{"Professor > Associate Professor"=>1, "Researcher"=>1, "Student > Ph. D. Student"=>2, "Student > Postgraduate"=>1, "Student > Master"=>1, "Student > Bachelor"=>4, "Professor"=>3}, "reader_count_by_user_role"=>{"Professor > Associate Professor"=>1, "Researcher"=>1, "Student > Ph. D. Student"=>2, "Student > Postgraduate"=>1, "Student > Master"=>1, "Student > Bachelor"=>4, "Professor"=>3}, "reader_count_by_subject_area"=>{"Agricultural and Biological Sciences"=>2, "Arts and Humanities"=>2, "Business, Management and Accounting"=>1, "Psychology"=>2, "Social Sciences"=>3, "Linguistics"=>2, "Neuroscience"=>1}, "reader_count_by_subdiscipline"=>{"Neuroscience"=>{"Neuroscience"=>1}, "Social Sciences"=>{"Social Sciences"=>3}, "Psychology"=>{"Psychology"=>2}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>2}, "Business, Management and Accounting"=>{"Business, Management and Accounting"=>1}, "Linguistics"=>{"Linguistics"=>2}, "Arts and Humanities"=>{"Arts and Humanities"=>2}}, "group_count"=>0}

Scopus | Further Information

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