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小孩子割破了手指,给他贴上一块胶布,他立即便觉得手指不那么痛了。胶布其实没有止痛效用,甚至没有疗伤作用。这就是“安慰剂效应”。
The child cut his finger and put a piece of tape on him, and immediately he felt the finger was not so painful. Tape does not actually analgesic effect, or even no healing effect. This is the “placebo effect.”