Initially, contact with secondary schools was made by means of a letter soliciting the authorization to administer the questionnaires to students. After obtaining authorization, contact was made with the teachers so that the questionnaires could be filled in during class hours. Participants were assured of the confidentiality of their responses and signed an informed consent form. The research project was approved by the ethics committee of the Faculty of Psychology and Educational Sciences (FPCEUP) of the University of Porto (Portugal).
Authorization Letter To Claim Prc 24.epub
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