person can be morally responsible if their actions are entirely determined, e.g., by the laws of Newtonian physics. One side of the debate, the proponents of which are called ‘incompatibilists,’ argue that there is no way for people to be morally responsible for immoral acts if they could not have done otherwise. The other side of the debate argues instead that people can be morally responsible for their immoral actions even when they could not have done otherwise. People who hold this view are often referred to as ‘compatibilists.’ It was generally claimed that non-philosophers were naturally incompatibilist, that is they think that if you couldn't have done anything else, then you are not morally responsible for your action. Experimental philosophers have addressed this question by presenting people with hypothetical situations in which it is clear that a person's actions are completely determined. Then the person does something morally wrong, and people are asked if that person is morally responsible for what she or he did. Using this technique Nichols and Knobe (2007) found that "people's responses to questions about moral responsibility can vary dramatically depending on the way in which the question is formulated" and argue that "people tend to have compatiblist intuitions when they think about the problem in a more concrete, emotional way but that they tend to have incompatiblist intuitions when they think about the problem in a more abstract, cognitive way". Epistemology Recent work in experimental epistemology has tested the apparently empirical claims of various epistemological views. For example, research on epistemic contextualism has proceeded by conducting experiments in which ordinary people are presented with vignettes that involve a knowledge ascription. Participants are then asked to report on the status of that knowledge ascription. The studies address contextualism by varying the context of the knowledge ascription (for example, how important it is that the agent in the vignette has accurate knowledge). Data gathered thus far show no support for what contextualism says about ordinary use of the term "knows". Other work in experimental epistemology includes, among other things, the examination of moral valence on knowledge attributions (the so-called "epistemic side-effect effect"), of the knowing-that / knowing-how distinction, and of laypeople's intuitions about lying, improper assertion, and insincerity. Intentional action A prominent topic in experimental philosophy is intentional action. Work by Joshua Knobe has especially been influential. "The Knobe Effect", as it is often called, concerns