Traits and cognitions of perfectionism and their relation with coping style, effort, achievement, and performance anxiety in Japanese musicians 論文 Osamu Kobori・Michiko Yoshie・Kazutoshi Kudo・Tatsuyuki Ohtsuki ·2011-03-17 ·『Journal of Anxiety Disorders』 25(5) pp. 674-679 doi:10.1016/j.janxdis.2011.03.001