人们知道什么或相信什么都会影响到他们的行为。在研究中 ,太多的期望会影响人们的研究发现 ,最明显的是在评价结果时 ,带有主观性 ,导致了带有偏差的结果。人们试图使用盲法 (有时称做“面罩法(ｍａｓｋｉｎｇ)”)来消除这类偏倚。在随机化对照试验中 ,通常的做法是 ,在病人确 What people know or believe will affect their behavior. Too much expectation in research will affect people’s findings, most notably in subjective evaluation of outcomes, leading to biased results. People try to use the blind method (sometimes called “masking”) to eliminate such bias. In randomized controlled trials, the usual practice is in patients