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本研究考察了一种心理准备方法对择期性剖腹手术病人住院期间应激反应的影响。６０位病人被随机地分派到实验组（常规加心理准备），对照一组（只做常规准备）或对照二组（常规准备加健康教育）．结果表明，实验组病人术中恐惧，术中和术后疼痛以及痛苦与不适程度显著减轻，此组病人于手术前夜也显示了较对照组高的收缩压增长。在对病人手术前夜恐惧程度的测量中发现类安慰剂效应。
This study examined the impact of a psychological preparation on stress response during hospitalization for elective laparotomy. Sixty patients were randomly assigned to the experimental group (regular plus psychiatric preparation), control group (conventional preparation only), or control group two (general preparation plus health education). The results showed that intraoperative fear, intraoperative and postoperative pain, and the degree of pain and discomfort were significantly reduced in the experimental group. Systolic blood pressure was also increased in the experimental group on the eve of surgery compared with the control group. A placebo-like effect was found in the measurement of the degree of fear of the patient on the eve of surgery.