The aim of this study is to identify and provide a clear idea about the helpful ways in determining the truth (or reliability) of arguments in the situations where it is necessary to make a decision. In this paper, we use systemic, structural-functional, activity approaches, methods of analysis, synthesis, moreover we discuss the works of scientists who conducted the study on the subject. The truth determination of the arguments will stimulate the development and modernization of science and critical thinking in individuals. As a result, a set of training sessions is developed, with the aim of informing about the methods that can be used for checking the arguments' validity. The results of the study could serve as a basis for similar and more extensive research in this direction with the aim of increasing the training effectiveness for a successful life in today's rapidly changing world through education. [Note: The page range (3607-3614) displayed on the PDF is incorrect. The correct page range is 3607-3613.]