There is no consensus in the literature about the nature of terrorism. The authors’ main claim is that this is ultimately the result of the coexistence of two senses of the term, the action and the actor sense, which are not fully congruent. Rather than trying to advocate a specific conceptualization, the authors provide in this article a map of the different ways in which scholars talk about terrorism. They identify first the set of terrorist actions and the set of (...) terrorist actors. Terrorist tactics are a variety of the power to hurt, based on the lack of military power. Terrorist groups are underground ones with no territorial control. When the two criteria meet, the core of terrorism exists: coercive violence perpetrated by underground groups. The ambiguity that surrounds terrorism is caused by two other possibilities: actors with some measure of territorial control adopting coercive tactics and underground actors adopting military tactics. Although it is not possible to remove this ambiguity in empirical research, scholars can at least identify it and analyze it. The authors illustrate the two senses of terrorism and their interaction by using the most comprehensive dataset on terrorist incidents, the Global Terrorism Database. (shrink)

The hypothesis that terrorism often emerges when mass collective action declines and radicals take up arms to compensate for the weakness of a mass movement has been around for some time; however, it has never been tested systematically. In this article the authors investigate the relationship between terrorist violence and mass protest in the context of the Spanish transition to democracy. This period is known for its pacts and negotiations between political elites, but in fact, it was accompanied by high (...) levels of terrorist violence and popular mobilization. To test the hypothesis, the authors have created two data sets, one on victims of terrorism and another on participation in demonstrations. The data clearly confirm that terrorism erupted in Spain when participation in demonstrations started to decline. This result sheds new light on the nonstructural conditions associated with the onset of terrorist violence. (shrink)

This article analyzes the problem of preference imputation in rational choice political science. I argue against the well-established practice in political science of assuming selfish preferences for purely methodological reasons, regardless of its empirical plausibility (this I call a preference for selfish preferences). Real motivations are overlooked due to difficulties of imputing preferences to agents in a non-arbitrary way in the political realm. I compare the problem of preference imputation in economic and political markets, and I show the harmful consequences (...) of the preference for selfish preferences in the field of collective action. Key Words: rational choice theory • preference • functionalism • collective action. (shrink)

A veces se argumenta que la acción tiene primacía sobre la cau salidad. Esto se puede entender de dos maneras: que la causalidad es una proyección de la acción al ámbito natural o que la causalidad presupone un agente que actúa. Defiendo que la primera tesis es falsa y que la segun da sólo liene sentido desde una teoría realista de las causas.