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A Relationship Between Early Language Skills and Adult Autistic-Like Traits: Evidence from a Longitudinal Population-Based Study

Abstract

The current study examined the relationship between early language ability and autistic-like traits in adulthood, utilising data from 644 participants from a longitudinal study of the general population. Language performance at 2 years was measured with the Language Development Survey (LDS), and at 20 years the participants completed the Autism-Spectrum Quotient (AQ). Vocabulary size at 2 years was negatively associated with Total AQ score, as well as scores on the Communication, and Social Skills subscales. Adults who had been late talkers were also more likely to have ‘high’ scores on the Communication subscale. This is the first study to show an association between early language ability and autistic-like traits in adulthood.

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Acknowledgments

The Raine Study is funded by the Raine Medical Research Foundation, the National Health and Medical Research Council (NHMRC), The University of Western Australia, The UWA Faculty of Medicine, Dentistry and Health Sciences, Curtin University, Edith Cowan University, The Telethon Kids Institute and the Women’s and Infant’s Research Foundation. We are extremely grateful to all the participants and their families who took part in this study, Jenny Mountain (Raine Study Manager) and the whole Raine Study team, which includes data collectors, cohort managers, data managers, clerical staff, research scientists and volunteers. Andrew Whitehouse is funded by a Senior Research Fellowship from the NHMRC (#1077966). David Copland is funded by an ARC Future Fellowship (#FT100100976) and UQ Vice Chancellor’s Research & Teaching Fellowship.

Authors’ Contributions

RA: This study forms part of RA’s PhD. RA assisted with conceptualizing and designing the study, performed the statistical analysis, drafted the manuscript, and approved the final manuscript as submitted. WA, AW, DC, and KM conceived the study and participated in its design, interpretation and discussion of the results, reviewed and revised the manuscript, and approved the final manuscript as submitted. JS participated in its design, interpretation and discussion of the results, reviewed and revised the manuscript, and approved the final manuscript as submitted. SF participated in the design of the study, helped to draft the manuscript and reviewed and revised the manuscript, and approved the final manuscript as submitted. All authors read and approved the final manuscript as submitted and agree to be accountable for all aspects of the work.

Funding

The authors on this paper were also awarded the 2013 UWA-UQ Bilateral Research Collaboration Award (Arnott & Mayberry).

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Correspondence to Rebecca Armstrong.

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Informed consent was obtained from all individual participants included in the study. Ethical approval: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Armstrong, R., Whitehouse, A.J.O., Scott, J.G. et al. A Relationship Between Early Language Skills and Adult Autistic-Like Traits: Evidence from a Longitudinal Population-Based Study. J Autism Dev Disord 47, 1478–1489 (2017). https://doi.org/10.1007/s10803-016-3014-z

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Keywords

  • Autism spectrum disorder
  • Autistic-like traits
  • Early language skills
  • Late talking
  • Raine Study