Over the past one and a half decades, the scope of experimental philosophy (x-phi) has expanded significantly. Experimental research programmes now cover almost all areas of philosophy, including epistemology, the philosophy of language, action theory, and the free will debate, to name just a few. This volume introduces the reader to these new developments in an accessible and systematic way. It explains how x-phi differs from traditional views of philosophy, investigates in depth how it uses empirical evidence to support philosophical conclusions of various kinds, and introduces the reader to both the most widely discussed experimental studies and the latest advancements in the field. As a critical study, it also examines the various criticisms that x-phi has received over the years and seeks, tentatively, to adjudicate them.