4件 （「Tsutomu Okada」）

Friendship Style, Adaptation, and Perceived Selves in Contemporary College Students 論文

Tsutomu Okada ·2007-01-01 ·『The Japanese Journal of Personality』　15(2)　pp. 135-148

doi:10.2132/personality.15.135

A Meta-Analysis of Gender Differences in Self-Esteem in Japanese 論文

Ryo Okada・Atsushi Oshio・Madoka Mogaki・Takafumi Wakita・Tsutomu Namikawa ·2015-01-01 ·『The Japanese Journal of Personality』　24(1)　pp. 49-60

doi:10.2132/personality.24.49

Age and Survey-Year Effects on Self-Esteem in Japan : 論文

Atsushi Oshio・Ryo Okada・Madoka Mogaki・Tsutomu Namikawa・Takafumi Wakita ·2014-01-01 ·『The Japanese Journal of Educational Psychology』　62(4)　pp. 273-282

doi:10.5926/jjep.62.273

Relation Between Perceived Friendship and Self-Consciousness Among Contemporary College Students 論文

Tsutomu Okada ·1999-01-01 ·『The Japanese Journal of Educational Psychology』　47(4)　pp. 432-439

doi:10.5926/jjep1953.47.4_432