The effect of need-supporting behaviors combined with regulatory focus on engagement 論文 Miki Toyama・Masato Nagamine・Ryo Kainuma・Li Tang・Shuhei Miwa・Atsusi Aikawa ·2021-01-01 ·『The Japanese journal of psychology』 92(4) pp. 257-266 doi:10.4992/jjpsy.92.20015