294 Praxeology of CoerCion: CatallaCtiCs vs. CratiCs Rahim Taghizadegan and maRc-Felix OTTO ABSTRACT: Ludwig von Mises’s most important legacy is the foundation and analysis of catallactics, i.e. the economics of interpersonal exchange, as a sub-discipline of praxeology, the science of human action. In this paper, based both on Mises’s methodical framework and on insights by Tadeusz Kotarbinski and Max Weber, a “praxeology of coercion,” or, more precisely, an analysis of interpersonal actions involving threats, is developed. Our investigation yields both a reviewed taxonomy of human action and a frst analysis of the elements of this theory, which we term cratics. This shall establish the basis for adjacent studies, furthering Mises’s project regarding the science of human action. KEYWORDS: Austrian school, praxeology, catallactics, coercion JEL CLASSIFICATION: B53 Rahim Taghizadegan (info@scholarium.at) is director of the academic research institute Scholarium (scholarium.at) in Vienna, Austria, lecturer at several univer- sities and faculty member at the International Academy of Philosophy in Liech- tenstein. Marc-Felix Otto (marc-felix.otto@advisoryhouse.com) is equity partner at the consulting frm The Advisory House in Zurich, Switzerland. Both authors would like to thank the research staf at the Scholarium for their help and input, in particular Johannes Leitner and Andreas M. Kramer. VOL. 18 | N O. 3 | 294–310 FALL 2015 The QuaRTeRly JOuRnal of ausTRian ecOnOmics