In light of an increasing interest in experimental work, we provide a review of some of the general issues involved in the design of experiments and illustrate their relevance to sociology and to other areas of social science of interest to sociologists. We provide both an introduction to the principles of experimental design and examples of influential applications of design for different types of social science research. Our aim is twofold: to provide a foundation in the principles of design that may be useful to those planning experiments and to provide a critical overview of the range of applications of experimental design across the social sciences.