The effectiveness of sales promotion can be tempered by psychological barriers, and this fact is applicable to middlemen as well as consumers.

无论是中间商还是消费者，只要有了心理障碍，便会使促销活动的效果打折扣。

youdao

Conclusion: Preoperative psychological intervention is one of important methods to increase the effectiveness of general anesthesia.

结论：术前心理干预是提高全身麻醉效果的重要方法之一。

youdao

Therefore, the effectiveness of student learning process depends largely on the psychological study environment, and different teaching programs will have different learning psychological environment.

因此，学生学习过程的有效性在很大程度上取决于学习时的心理环境，而不同的教学方案会产生不同的学习心理环境。

youdao

Randomised trials have been used to evaluate the effectiveness of driver-education programmes, job-training schemes, classroom size, psychological counselling for post-traumatic-stress disorder and increased investment in public housing.

ECONOMIST: Social science