根据下面材料，作答题。
【材料】某教师用心理测量鉴别学生是力求成功者还是避免失败者。结果发现某班学生基本是力求成功者。于是该教师说：“基于班里同学的心理特点，我应设置中等难度的学习任务，也就是将学习成功率控制在50%左右。”
为什么 ()查看材料
正确答案及解析
正确答案
解析
BD。本题考查点是动机理论中的成就动机理论。成就动机水平高的学生倾向于选择中等难度的学习任务，而中等难度的学习任务更具有挑战性。因此选择BD。
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