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Verseveld, Marloes D. A.; Fekkes, Minne; Fukkink, Ruben G.; Oostdam, Ron J. – Child Development, 2021
This study investigates the effectiveness of the PRIMA antibullying program for elementary education using a cluster-randomized trial with two experimental conditions (with and without student lessons) and a control group. Students of 31 schools participated in the study (N = 3,135; M[subscript age] = 10 years). Multilevel regression analyses…
Descriptors: Program Effectiveness, Bullying, Elementary School Students, Elementary School Teachers