Text and Data Mining valid from 2018-06-19
First Online: 19 June 2018
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were approved by the ethical review board for psychological research of the European University of Rome and were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.