EN
Scientific experiments which try to examine free will are faced with various critical arguments — both philosophical and methodological. In this article I will present the most important and the most interesting critical arguments attacking two the most influential experiments: Benjamin Libet experiment and John‐Dylan Haynes experiment. In the first part of the article I will consider a particular criticism of Libet paradigm, which loses its importance in context of Haynes paradigm. Next I will present critical arguments which attack both Haynes and Libet experiments (and probably all other psychophysiological experiments facing free will problem). Because of this analysis I will consider informative value of presented experiments in context of existence of free will.