Imitation as faithful copying of a novel technique in marmoset monkeys.

Imitative learning has received great attention due to its supposed role in the development of culture and the cognitive demands it poses on the individual. Evidence for imitation in non-human primate species, therefore, could shed light on the early origins of proto-cultural traits in the primate o...

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Main Authors: Bernhard Voelkl, Ludwig Huber
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2007-07-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0000611
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author Bernhard Voelkl
Ludwig Huber
author_facet Bernhard Voelkl
Ludwig Huber
author_sort Bernhard Voelkl
collection DOAJ
description Imitative learning has received great attention due to its supposed role in the development of culture and the cognitive demands it poses on the individual. Evidence for imitation in non-human primate species, therefore, could shed light on the early origins of proto-cultural traits in the primate order. Imitation has been defined as the learning of an act by seeing it done or, more specifically, as the copying of a novel or otherwise improbable act. But despite a century of research and the detection of mirror neurons the empirical basis for this most advanced form of observational learning is weak. Few, if any, studies have shown that the observer has learned the response topography, i.e., the specific action by which the response is made. In an experimental set-up we confronted marmoset monkeys (Callithrix jacchus) with a conspecific model that was previously trained to open a plastic box in a peculiar way. Employing detailed motion analyses we show that the observers precisely copied the movement patterns of the novel action demonstrated by the model. A discriminant analysis classified 13 out of 14 observer movements (92.86%) as model movements and only one as non-observer movement. This evidence of imitation in non-human primates questions the dominant opinion that imitation is a human-specific ability. Furthermore, the high matching degree suggests that marmosets possess the neuronal mechanism to code the actions of others and to map them onto their own motor repertoire, rather than priming existing motor-templates.
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spelling doaj.art-69f6cd638f3942bc94f2c0911cc759cc2022-12-21T23:30:59ZengPublic Library of Science (PLoS)PLoS ONE1932-62032007-07-0127e61110.1371/journal.pone.0000611Imitation as faithful copying of a novel technique in marmoset monkeys.Bernhard VoelklLudwig HuberImitative learning has received great attention due to its supposed role in the development of culture and the cognitive demands it poses on the individual. Evidence for imitation in non-human primate species, therefore, could shed light on the early origins of proto-cultural traits in the primate order. Imitation has been defined as the learning of an act by seeing it done or, more specifically, as the copying of a novel or otherwise improbable act. But despite a century of research and the detection of mirror neurons the empirical basis for this most advanced form of observational learning is weak. Few, if any, studies have shown that the observer has learned the response topography, i.e., the specific action by which the response is made. In an experimental set-up we confronted marmoset monkeys (Callithrix jacchus) with a conspecific model that was previously trained to open a plastic box in a peculiar way. Employing detailed motion analyses we show that the observers precisely copied the movement patterns of the novel action demonstrated by the model. A discriminant analysis classified 13 out of 14 observer movements (92.86%) as model movements and only one as non-observer movement. This evidence of imitation in non-human primates questions the dominant opinion that imitation is a human-specific ability. Furthermore, the high matching degree suggests that marmosets possess the neuronal mechanism to code the actions of others and to map them onto their own motor repertoire, rather than priming existing motor-templates.https://doi.org/10.1371/journal.pone.0000611
spellingShingle Bernhard Voelkl
Ludwig Huber
Imitation as faithful copying of a novel technique in marmoset monkeys.
PLoS ONE
title Imitation as faithful copying of a novel technique in marmoset monkeys.
title_full Imitation as faithful copying of a novel technique in marmoset monkeys.
title_fullStr Imitation as faithful copying of a novel technique in marmoset monkeys.
title_full_unstemmed Imitation as faithful copying of a novel technique in marmoset monkeys.
title_short Imitation as faithful copying of a novel technique in marmoset monkeys.
title_sort imitation as faithful copying of a novel technique in marmoset monkeys
url https://doi.org/10.1371/journal.pone.0000611
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