Gadermann A: Measuring kindness at school: Psychometric properties of a school kindness scale for children and adolescents
Binfet JT, Gadermann AM, Schonert-Reichl KA. Measuring kindness at school: Psychometric properties of a school kindness scale for children and adolescents. Psychology in the Schools. 2016 Feb; 53(2):111–126. doi: 10.1002/pits.21889.
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