3件 （「Yasumasa Kosaka」）

Feelings and Reactive Behavior Generated by Self-Recognized Inferiority in Appearance in Adolescents 論文

Yasumasa Kosaka ·2009-01-01 ·『The Japanese Journal of Educational Psychology』　57(1)　pp. 1-12

doi:10.5926/jjep.57.1

Relations Between Effects of Feelings of School Avoidance From Their Internal Working Model and Class Functioning: 論文

Akiho Sakita・Yasumasa Kosaka ·2018-12-26 ·『The Japanese Journal of Educational Psychology』　66(4)　pp. 276-286

doi:10.5926/jjep.66.276

Adolescents’ Anxieties About Being Thought Different From Others and the Tendency Toward Uniformity in Their Friendship Groups 論文

Yasumasa Kosaka ·2010-01-01 ·『The Japanese Journal of Educational Psychology』　58(3)　pp. 338-347

doi:10.5926/jjep.58.338