Article History
Received: 18 August 2020
Accepted: 1 June 2021
First Online: 18 July 2021
Declarations
:
: The authors declare no conflict of interest.
: The study was conducted in accordance with the Helsinki Declaration. Ethical agreement and consent for access to school were provided by the Psychological Institute of the Russian Academy of Education.
: Verbal consent was obtained from all subjects before the study
: Verbal consent for publication was obtained from all subjects.
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