Is early childhood development impeded by the birth timing of the younger sibling?

• Gursimran Dhamrait ,

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Validation, Visualization, Writing – original draft, Writing – review & editing

  * E-mail: gursimran.dhamrait@telethonkids.org.au

  Affiliations Telethon Kids Institute, The University of Western Australia, Perth, Western Australia, Australia, School of Population and Global Health, The University of Western Australia, Perth, Western Australia, Australia, School of Health and Society, The University of Wollongong, Wollongong, New South Wales, Australia

  https://orcid.org/0000-0002-5191-211X

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• Melissa O’Donnell,

  Roles Supervision, Writing – review & editing

  Affiliations Telethon Kids Institute, The University of Western Australia, Perth, Western Australia, Australia, Australian Centre for Child Protection, University of South Australia, Adelaide, South Australia, Australia

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• Hayley Christian,

  Roles Supervision, Writing – review & editing

  Affiliations Telethon Kids Institute, The University of Western Australia, Perth, Western Australia, Australia, School of Population and Global Health, The University of Western Australia, Perth, Western Australia, Australia

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• Gavin Pereira

  Roles Funding acquisition, Methodology, Project administration, Resources, Supervision, Writing – review & editing

  Affiliations Curtin School of Population Health, Curtin University, Perth, Australia, Centre for Fertility and Health (CeFH), Norwegian Institute of Public Health, Oslo, Norway, enAble Institute, Curtin University, Perth, Western Australia, Australia

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