The empirical research on the effects of 9/11 attacks on suicide terrorism is limited. The purpose of this research is to examine the effects of the 9/11 terrorist attacks on attack types, weapon types, and target types in suicide terrorism worldwide and the trends in the suicide attack outcomes before and after 9/11. The data were obtained from the Global Terrorism Database (GTD) and included suicide-terrorism incidents between 1981 and 2018. The results of monthly interrupted time-series analyses and negative binomial regression tests comparing pre-9/11 and post-9/11 showed that the 9/11 terrorist attacks had significant impacts on the target types, attack types, and weapon types in suicide-terrorism incidents. The results, limitations, and policy implications are discussed.

关于 9/11 袭击对自杀式恐怖主义影响的实证研究是有限的。本研究的目的是考察 9/11 恐怖袭击事件对全球自杀式恐怖主义袭击类型、武器类型和目标类型的影响，以及 9/11 前后自杀袭击结果的趋势。数据来自全球恐怖主义数据库 (GTD)，包括 1981 年至 2018 年间的自杀性恐怖主义事件。 比较 9/11 前和 9/11 后的月度中断时间序列分析和负二项式回归测试的结果显示9/11 恐怖袭击事件对自杀恐怖事件的目标类型、攻击类型和武器类型产生了重大影响。讨论了结果、局限性和政策影响。