Funding for this research was provided by:
Narodowe Centrum Nauki (2015/17/N/HS6/02900)
Article History
First Online: 16 July 2019
Compliance with Ethical Standards
:
: 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.
: On behalf of all the authors, the corresponding author states that there is no conflict of interest.
: The study was carried out in accordance with the recommendations of Declaration of Helsinki and local ethical guidelines for studies with human participants with written informed consent from all subjects. The protocol for the study was approved by Research Ethics Committee at the Faculty of Pedagogy and Psychology of the University of Bialystok.