The influence of iconicity and autistic traits on novel word learning: a cross-cultural investigation

The effects of iconicity and autistic traits on novel word learning were investigated through an online experiment involving 1481 healthy adult participants aged between 18 and 40 years from four countries: Brazil (N = 261), India (N = 416), Japan (N = 493) and the USA (N = 311). Participants comple...

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Main Authors: Vijayachandra Ramachandra, Kairi Sugimoto, Kelly Ziskind, Ark Verma, Irfan Ahmad, Mahayana Godoy, Katsumi Watanabe
Format: Article
Language:English
Published: The Royal Society 2025-03-01
Series:Royal Society Open Science
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Online Access:https://royalsocietypublishing.org/doi/10.1098/rsos.242161
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author Vijayachandra Ramachandra
Kairi Sugimoto
Kelly Ziskind
Ark Verma
Irfan Ahmad
Mahayana Godoy
Katsumi Watanabe
author_facet Vijayachandra Ramachandra
Kairi Sugimoto
Kelly Ziskind
Ark Verma
Irfan Ahmad
Mahayana Godoy
Katsumi Watanabe
author_sort Vijayachandra Ramachandra
collection DOAJ
description The effects of iconicity and autistic traits on novel word learning were investigated through an online experiment involving 1481 healthy adult participants aged between 18 and 40 years from four countries: Brazil (N = 261), India (N = 416), Japan (N = 493) and the USA (N = 311). Participants completed a bouba–kiki-based word learning task, viewing novel images paired with either iconic names (congruent condition) or arbitrary names (incongruent condition). Word recognition was assessed using a three-alternative forced-choice procedure, and autistic traits were measured with the autism spectrum quotient (AQ). Results showed a significant benefit of iconicity across all countries, with better performance in the congruent condition. While a linear mixed model revealed no significant effect of AQ on bouba–kiki scores overall, a country-specific analysis found a weak but significant positive correlation between AQ scores and bouba–kiki performance in Japanese participants. This country-specific finding should be interpreted cautiously and warrants further exploration. Overall, the findings demonstrate the robustness and universality of the bouba–kiki effect on word learning across both Western and Eastern cultures. However, the relationship between autistic traits and iconicity was not consistent across all countries and may depend on cultural factors. Further research is needed to explore this in more detail.
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spelling doaj-art-da466d22ed25493f86ac8e7b3f714b392025-08-20T03:40:18ZengThe Royal SocietyRoyal Society Open Science2054-57032025-03-0112310.1098/rsos.242161The influence of iconicity and autistic traits on novel word learning: a cross-cultural investigationVijayachandra Ramachandra0Kairi Sugimoto1Kelly Ziskind2Ark Verma3Irfan Ahmad4Mahayana Godoy5Katsumi Watanabe6Department of Communication Sciences and Disorders, Marywood University, Scranton, PA, USAFaculty of Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, JapanClinical Fellow in Speech-Language Pathology, Theracare, Hackensack, NJ, USADepartment of Cognitive Science, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, IndiaDepartment of Cognitive Science, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, IndiaCenter for the Humanities, Languages and Arts, Federal University of Rio Grande do Norte, Natal, BrazilFaculty of Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, JapanThe effects of iconicity and autistic traits on novel word learning were investigated through an online experiment involving 1481 healthy adult participants aged between 18 and 40 years from four countries: Brazil (N = 261), India (N = 416), Japan (N = 493) and the USA (N = 311). Participants completed a bouba–kiki-based word learning task, viewing novel images paired with either iconic names (congruent condition) or arbitrary names (incongruent condition). Word recognition was assessed using a three-alternative forced-choice procedure, and autistic traits were measured with the autism spectrum quotient (AQ). Results showed a significant benefit of iconicity across all countries, with better performance in the congruent condition. While a linear mixed model revealed no significant effect of AQ on bouba–kiki scores overall, a country-specific analysis found a weak but significant positive correlation between AQ scores and bouba–kiki performance in Japanese participants. This country-specific finding should be interpreted cautiously and warrants further exploration. Overall, the findings demonstrate the robustness and universality of the bouba–kiki effect on word learning across both Western and Eastern cultures. However, the relationship between autistic traits and iconicity was not consistent across all countries and may depend on cultural factors. Further research is needed to explore this in more detail.https://royalsocietypublishing.org/doi/10.1098/rsos.242161iconicityautistic traitssound symbolismnovel word learningautism spectrum quotient
spellingShingle Vijayachandra Ramachandra
Kairi Sugimoto
Kelly Ziskind
Ark Verma
Irfan Ahmad
Mahayana Godoy
Katsumi Watanabe
The influence of iconicity and autistic traits on novel word learning: a cross-cultural investigation
Royal Society Open Science
iconicity
autistic traits
sound symbolism
novel word learning
autism spectrum quotient
title The influence of iconicity and autistic traits on novel word learning: a cross-cultural investigation
title_full The influence of iconicity and autistic traits on novel word learning: a cross-cultural investigation
title_fullStr The influence of iconicity and autistic traits on novel word learning: a cross-cultural investigation
title_full_unstemmed The influence of iconicity and autistic traits on novel word learning: a cross-cultural investigation
title_short The influence of iconicity and autistic traits on novel word learning: a cross-cultural investigation
title_sort influence of iconicity and autistic traits on novel word learning a cross cultural investigation
topic iconicity
autistic traits
sound symbolism
novel word learning
autism spectrum quotient
url https://royalsocietypublishing.org/doi/10.1098/rsos.242161
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