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Double blind experience #48

@michaeldaydayup

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@michaeldaydayup

A blind — or blinded — experiment is an experiment in which information about the test is masked (kept) from the participant, to reduce or eliminate bias, until after a trial outcome is known. If both tester and subject are blinded, the trial is called a double-blind experiment. — Blind experiment - Wikipedia

双盲是科学方法的一种,目的是避免研究结果受安慰剂效应或观察者偏向所影响。 —— 维基百科

在科学实验中,设计良好的实验一般会有两个相互比较的组别:
试验组:接受某种待验证的试验(如某种药物治疗)方案
对照组:除了待验证的变量以外,其他变量都与实验组相同
双盲实验中:
被试者不知道自己属于实验组还是对照组
试验者不知道哪一组是试验组,哪一组是对照组

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