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【单选题】
实验中由研究者所选出和操纵的,对被试的反应可能产生影响并且研究者希望观察其效应的变量,作用是用来区分或定义不同的实验条件,或不同的类型的被试。这种变量被称为什么?A.
自变量
B.
因变量
C.
调节变量
D.
控制变量
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皮皮学刷刷变学霸
举一反三
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on need of
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A.
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A.
suppose
B.
agree
C.
believe
D.
wonder
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