Effects of verbal instruction vs. modelling on imitation and overimitation

Abstract Human culture is the result of a unique cumulative evolutionary process. Despite the importance of culture for our species the social transmission mechanisms underlying this process are still not fully understood. In particular, the role of language—another unique human behaviour—in social...

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Main Authors: Aliki Papa, Mioara Cristea, Nicola McGuigan, Monica Tamariz
Format: Article
Language:English
Published: Springer Nature 2021-10-01
Series:Humanities & Social Sciences Communications
Online Access:https://doi.org/10.1057/s41599-021-00925-4
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author Aliki Papa
Mioara Cristea
Nicola McGuigan
Monica Tamariz
author_facet Aliki Papa
Mioara Cristea
Nicola McGuigan
Monica Tamariz
author_sort Aliki Papa
collection DOAJ
description Abstract Human culture is the result of a unique cumulative evolutionary process. Despite the importance of culture for our species the social transmission mechanisms underlying this process are still not fully understood. In particular, the role of language—another unique human behaviour—in social transmission is under-explored. In this first direct, systematic comparison of demonstration vs. language-based social learning, we ran transmission chains of participants (6- to 8-year-old children and adults from Cyprus) who attempted to extract a reward from a puzzle box after either watching a model demonstrate an action sequence or after listening to verbal instructions describing the action sequence. The initial seeded sequences included causally relevant and irrelevant actions allowing us to measure transmission fidelity and the accumulation of beneficial modifications through the lens of a subtractive ratchet effect. Overall, we found that, compared to demonstration, verbal instruction specifically enhanced the faithful transmission of causally irrelevant actions (overimitation) in children, but not in adults. Cumulative cultural evolution requires the faithful transmission of sophisticated, complex behaviour whose function may not be obvious. This indicates that, by supporting the retention of actions that appear to lack a causal function specifically by children, language may play a supportive role in cumulative cultural evolution.
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spelling doaj.art-ff02823e6b8c4231b0d41197594d53992022-12-21T22:41:53ZengSpringer NatureHumanities & Social Sciences Communications2662-99922021-10-018111210.1057/s41599-021-00925-4Effects of verbal instruction vs. modelling on imitation and overimitationAliki Papa0Mioara Cristea1Nicola McGuigan2Monica Tamariz3Psychology, Heriot-Watt UniversityPsychology, Heriot-Watt UniversityPsychology, University of the West of ScotlandPsychology, Heriot-Watt UniversityAbstract Human culture is the result of a unique cumulative evolutionary process. Despite the importance of culture for our species the social transmission mechanisms underlying this process are still not fully understood. In particular, the role of language—another unique human behaviour—in social transmission is under-explored. In this first direct, systematic comparison of demonstration vs. language-based social learning, we ran transmission chains of participants (6- to 8-year-old children and adults from Cyprus) who attempted to extract a reward from a puzzle box after either watching a model demonstrate an action sequence or after listening to verbal instructions describing the action sequence. The initial seeded sequences included causally relevant and irrelevant actions allowing us to measure transmission fidelity and the accumulation of beneficial modifications through the lens of a subtractive ratchet effect. Overall, we found that, compared to demonstration, verbal instruction specifically enhanced the faithful transmission of causally irrelevant actions (overimitation) in children, but not in adults. Cumulative cultural evolution requires the faithful transmission of sophisticated, complex behaviour whose function may not be obvious. This indicates that, by supporting the retention of actions that appear to lack a causal function specifically by children, language may play a supportive role in cumulative cultural evolution.https://doi.org/10.1057/s41599-021-00925-4
spellingShingle Aliki Papa
Mioara Cristea
Nicola McGuigan
Monica Tamariz
Effects of verbal instruction vs. modelling on imitation and overimitation
Humanities & Social Sciences Communications
title Effects of verbal instruction vs. modelling on imitation and overimitation
title_full Effects of verbal instruction vs. modelling on imitation and overimitation
title_fullStr Effects of verbal instruction vs. modelling on imitation and overimitation
title_full_unstemmed Effects of verbal instruction vs. modelling on imitation and overimitation
title_short Effects of verbal instruction vs. modelling on imitation and overimitation
title_sort effects of verbal instruction vs modelling on imitation and overimitation
url https://doi.org/10.1057/s41599-021-00925-4
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