Effects of the “Social and Emotional Learning of 8 Abilities at the Nursery School” (SEL-8N) Program on Preschool Children’s Social Behavior 論文 Yohei Yamada・Reizo Koizumi ·2020-06-30 ·『The Japanese Journal of Educational Psychology』 68(2) pp. 216-229 doi:10.5926/jjep.68.216