Quantifying fear: The social impact of terrorism

This paper proposes a methodology to measure social impact of terrorism. We define a multidimensional terrorism index based not only on deaths but also on other variables such as injuries, bombs and kidnappings. The weight of each terrorist activity is given by its social impact, which is estimated through its relevance in the media. For this task we build up a new data set from the four most important newspapers in Spain, namely, El País, El Mundo, ABC, and La Vanguardia. Finally, we evaluate the social impact of ETA terrorism in Spain from 1993 through 2004.