The methodological manual “Features of the differential diagnosis of thinking disorders using examples from clinical practice” contains the most important information regarding the terms and concepts used in pathopsychological studies and the practical application of basic pathopsychological techniques for the differential diagnosis of disorders of the thinking sphere. The manual examines in detail the use of three classical techniques: “Pictogram Method”, “Elimination of the Superfluous” and “Interpretation of Proverbs”. An important distinguishing feature of this manual is the many clinical examples provided. Most textbooks on pathopsychology and methodological recommendations often describe cases as examples that serve to confirm the theoretical foundations of the described methods, but are extremely rare in practice. The methodological manual is designed for various categories of young specialists: student psychologists, specialist psychologists, psychiatrists.