Article History
Received: 22 June 2018
Revised: 12 March 2019
Accepted: 19 March 2019
First Online: 23 May 2019
Compliance with ethical standards
: The research design of this study followed all the indications of the Declaration of Helsinki (World Medical AssociationCitationRef removed) and was approved by the Ethics Committee of the Department of Psychology at the University of Florence, Italy. We collected informed consent from the participants’ parents.