Финансовые последствия атак 11 сентября: см. Dick К. Nanto, "9/11 Terrorism: Global Economic Costs", Congressional Research Service, 2004.

Рост смертей в ДТП после 11 сентября: см. работу Garrick Blalock, Vrinda Kadiyali, and Daniel Simon, "Driving Fatalities after 9/11: A Hidden Cost of Terrorism" Cornell University Department of Applied Economics and Management, 2005; статью Gerd Gigerenzer, "Dread Risk, September 11, and Fatal Traffic Accidents", Psychological Science 15, no. 1 (2004); Michael Sivak and Michael J. Flannagan, "Consequences for Road Traffic Fatalities of the Reduction in Flying Following September 11,2001", Transportation Research 7, nos. (июль-сентябрь 2004 г.); а также Jenny С. Su и др., "Driving Under the Influence (of Stress): Evidence of a Regional Increase in Impaired Driving and Traffic Fatalities After the September 11 Terrorist Attacks", Psychological Science 20, no. 1 (декабрь 2008 г.).