Abstract
Recently, attention has been paid by linguists to the interdisciplinary foundations of speech perception. The peculiarities of the processes of understanding speech and speaking indicate a special function of the human psyche. According to Kopylova M.M. the peculiarities of memory for the perception of different words play an important role. One of the most pressing problems of modern psycholinguistics is the study of the mental vocabulary. The structure and organization of a person's internal lexicon, its role in the processes of perception of native and foreign speech is expressed by the concept of “mental lexicon.” The article describes the results of an experimental study to identify the level and strength of mastering internal foreign language vocabulary in an educational situation. specialties of Aktobe Regional State University named after K. Zhubanov of the Republic of Kazakhstan It should be noted that, despite the increasing role of the English language in Kazakhstan at the present time, this problem is probably the least worked out. The purpose of the article is to describe the results of scientific research on the process of introducing a foreign word into the student's internal vocabulary system at the level of professional training. Main conclusions: the data obtained allow us to identify the features of the entry of a foreign language word into the student's internal vocabulary system at a professional level.