The article offers an overview of the use of survey experiments in political research by relying on available examples, bibliographic data and a content analysis of experimental manuscripts published in leading academic journals over the last two decades. After a short primer to the experimental approach, we discuss the development, applications and potential problems to internal and external validity in survey experimentation. The article also provides original examples, contrasting a traditional factorial and a more innovative conjoint design, to show how survey experiments can be used to test theory on relevant political topics. The main challenges and possibilities encountered in envisaging, planning and implementing survey experiments are examined. The article outlines the merits, limits and implications of the use of the experimental method in political research.

The method of analysis Adam Smith uses is relatively similar to the method economics generally uses today, especially the subfield of experimental economics. The method of analysis that Smith uses is coherent and consistent throughout his whole work. He searches for constant variables and then sees what variables are changed by exogenous changes. In particular, Smith looks for the constancy in human nature, and analyzes how historical and material circumstances change the incentives that the constant human nature faces. This method, applied to human conduct in all its aspects, makes it easy for many economists today to see some continuity between Smith’s political economy and today’s economic science.

Dans cet article, nous étudions la forte stabilité d'une règle de vote telle que définie par Dutta et al. [2001] par l'intermédiaire de la méthode expérimentale. Dans ce sens, une règle de vote est dite fortement stable si le vainqueur de l'élection reste inchangé après une tentative de manipulation par candidature stratégique d'un candidat potentiel. Dans le cadre d'une élection avec trois candidats en lice et d'un électorat de petite taille, nous évaluons de façon expérimentale les fréquences de la forte stabilité des règles de vote parlementaires et de la pluralité.

Although there has been over a century of formal empirical inquiry, parapsychologists have clearly failed to produce a single reliable demonstration of “paranormal,” or “psi,” phenomena. Although many parapsychological research projects have been carried out under what have been described as well-controlled conditions, this does not by itself make a science, for unless and until it can be demonstrated that paranormal phenomena really exist, there is no subject matter around which a science can develop. Indeed, parapsychologists have not even succeeded in developing a reasonable definition of paranormal phenomena that does not involve, or imply, some aspect of mind-body dualism. Moreover, parapsychology has developed several principles (such as the experimenter effect) which can be used to explain away failures, and the use of these principles contributes to making the psi-hypothesis unfalsifiable.

The “anything goes” attitude in parapsychology, which seems to lend credence to virtually any “paranormal” claim, serves to weaken the credibility of parapsychological endeavors in the eyes of critics. This general willingness to suspend doubt is another indication that parapsychology is more than the quest to explain anomalous experiences, as is claimed. It is argued in this paper that parapsychological inquiry reflects the attempt to establish the reality of a nonmaterial aspect of human existence, rather than a search for explanations for anomalous phenomena.