EN
Interactional synchrony plays so important roles in hypnotic interactions, as in waking ones. Behavioral synchrony has been traditionally studied with the help of microanalytical methods, which methods have been criticized because of their elementarism and because of being time-consuming. The global method (based on the judgments of naive raters) has been worked out for studying behavioral synchrony in waking interactions as an alternative of microanalytical methods. In this study the global method has been adapted for studying the behavioral synchrony in the course of relaxational hypnotic interactions. One minute parts of the video recordings of 26 standard experimental hypnoses have been judged by naive raters as to the level of perceived interactional synchrony. The analysis between the judged and microanalysed data of synchrony revealed the quantity dependence of the reliability and validity of the global judgments. By ascertaining the conditions of reliability and validity the authoresses revealed that the global method of studying behavioral synchrony in hypnotic interactions could be applied only with certain restrictions.