本题目来源于试卷: IB Psychology HL Abnormal Psychology，类别为 IB心理学
[单选题]
Which research technique helps deter6tj;c ym4*dg7-cr :1p g gzjoomine whether a bioklk 07+bnwa(9 q1vz wm 6bysp-logical treatment is successfnk9wz+wb0spy(716k v - lmbaqul simply because the patient believes they are being treated?
A. Acclimation periods
B. Random allocation
C. Including a placebo group
D. Counterbalancing conditions
参考答案: C
本题详细解析:
Choices A and D describe techniques that reduce order effecm*mb)) c:,wzt+m isv )f zs4iuts. Choice B reduces the chanc wv:u+f)bmsii 4z)*,m)mtzcs e that participant variability will influence the results of the study.
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