praxeology (gr. ÏÏá¾¶Î¾Î¹Ï (praxis) â³actionâ³, Î»ÏÎ³Î¿Ï (logos) â³talk, speechâ³) is the deductive study of human action based on the fact that humans engage in purposeful behavior, as opposed to reflexive behavior like sneezing and inanimate behavior.http://www.lewrockwell.com/rothbard/rothbard38.html according to adherents, with the action axiom as the starting point, it is possible to draw conclusions about human behavior that are both objective and universal. for example, the notion that humans engage in acts of choice implies that they have preferences, and this must be true for anyone who exhibits intentional behavior. the most common use of the term is in connection with the austrian school of economics,praxeology: the methodology of austrian economics as established by economist ludwig von mises. ==origin and etymology== coinage of the word praxeology is often credited to louis bourdeau, the french author of a classification of the sciences, which he published in his thÃ©orie des sciences: plan de science intÃ©grale in 1882:bourdeau, louis, thÃ©orie des sciences: plan de science intÃ©grale, paris, 1882, p. 463 {{quote|on account of their dual natures of specialty and generality, these functions should be the subject of a separate science. some of its parts have been studied for a long time, because this kind of research, in which man could be the main subject, has always presented the greatest interest. physiology, hygiene, medicine, psychology, animal history, human history, political economy, morality, etc. represent fragments of a science that we would like to establish, but as fragments scattered and uncoordinated have remained until now only parts of particular sciences. they should be joined together and made whole in order to highlight the order of the whole and its unity. now you have a science, so far unnamed, which we propose to call praxeology (from ÏÏÎ±Î¾Î¹Ï, action), or by referring to the influence of the environment, mesology (from Î¼ÎµÏÎ¿Ï, environment)."Ã raison de leur double caractÃ¨re de spÃ©cialitÃ© et de gÃ©nÃ©ralitÃ©, les fonctions doivent constituer lâobjet dâune science distincte. quelquesâunes de ses parties ont Ã©tÃ© Ã©tudiÃ©es de bonne heure, car ce genre de recherches, dont lâhomme pouvait se faire le sujet principal, a prÃ©sentÃ© de tout temps le plus vif intÃ©rÃªt. la physiologie, lâhygiÃ¨ne, la mÃ©decine, la psychologie, lâhistoire des animaux, lâhistoire humaine, lâÃ©conomie politique, la morale, etc., reprÃ©sentent des fragments de la science que nous voudrions Ã©tablir; mais fragments, Ã©pars et sans co
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