()实验研究适用于比较患有不同疾病的病人或正常人,也适用于比较一种或几种实验操纵对在一项心理测量中得高分和低分的人的影响。
A.前实验研究
B.准实验研究
C.个案实验研究
D.流行病学研究
正确答案是B
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