A Pilot Study Testing the Effectiveness of a Mindfulness-Based Program for Portuguese School Children.

"data availability all data are available at the open science framework ( https://osf io/3k765 ). data availability all data are available at the open science framework"

"Declarations Ethics StatementThe study complied with the Declaration of Helsinki and was approved by the Ethics Committee of the Faculty of Psychology and Education Sciences, University of Porto. Informed ConsentStudents’ legal guardians gave written informed consent to include their children in the study, who also gave oral assent to participate. Conflict of InterestThe authors declare no competing interests. Conflict of Interest The authors declare no competing interests."

"Funding This research was supported by the M2S Project funded through the Operational Programme for Competitiveness and Internationalization, supported by FEDER and national funds allocated to the Portuguese Foundation for Science and Technology (FCT), NORTE-01–0145-FEDER-028404, and through the FCT grants 2020.05816.BD attributed to SM and UID/PSI/00050/2013 attributed to CPUP."