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Authors
Marinova, Mila https://orcid.org/0000-0002-6875-7742
Schiltz, Christine https://orcid.org/0000-0002-1055-3878
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Funding
Funding for this research was provided by:
Fonds National de la Recherche Luxembourg (C20/SC/14629532/SymNumDev, C20/SC/14629532/SymNumDev)
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Article History
Received: 10 March 2025
Accepted: 9 July 2025
First Online: 5 August 2025
Declarations
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: The authors declare no competing interests.
: This research was conducted and written according to APA ethical standards. The Ethical Review Panel at the University of Luxembourg approved the experimental protocol for the current study (ERP 21–045). Approval for testing in public schools was obtained from Luxembourg’s Ministry of Education. All methods were performed in accordance with the relevant guidelines and regulations, including the Declaration of Helsinki and its latest amendments. Prior to participation, written informed consent was sought from each participant’s their legal representative.
