A total of 1823 observations were collected from respondents. In the introduction of the questionnaire, it was possible to agree/disagree with participation in the research, which allowed respondents to confirm their informed consent. Respondents who did not agree to participate in the research were not included in this number. The questionnaire also included a control item indicating agreement with the statement that one million has six zeros (a numerical expression was also provided), respondents who did not agree with this statement were excluded from the research. Students with other than Slovak nationality were also excluded, as well as Slovak students who stated that they were primarily studying in another country, for example in the Czech Republic (these were individuals to whom the questionnaire was distributed at random and they probably studied both in the Slovak Republic and in the Czech Republic). The validity of the observations was also assessed on the basis of obviously irrelevant responses to the questionnaire items. A total of 350 respondents were excluded and the research sample consisted of 1523 respondents.
