%0 Electronic Source %~ 教育研究集刊 %I 國立台灣師範大學教育學系 %W 國立台灣師範大學教育學系 %T Effect of motivation level, task difficulty, cooperation and com petition on task performance and anxiety state. %! Effect of motivation level, task difficulty, cooperation and com petition on task performance and anxiety state. %A %U %D 2017 %V -0001 %N 1130