LAUSR

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.