On the Issue of Expanding the Concepts of Non-Migration and (Im)Mobility

In modern studies of migration, the most common approach emphasizes the primary importance of migration and its effects. Given the insufficient level of detail in the terminology used to describe the sedentary populations in Russian research, this article aims to define within the demographic framework the meaning and scope of a term used in Russian scientific literature to describe populations living in an area and not moving from it. The study is based on an analysis of publications by foreign and Russian authors on migration and its absence. This research is a continuation of the author's work on the issue of population immobility. The paper argues that mobility and immobility are not mutually exclusive but rather represent two aspects of the same process. In today's context, (im)mobility should be regarded as a complex, dynamic process with multiple determinants, including actors and objects, forces and factors that drive it. This paper supports the need for incorporating the concept of liminality into the study of concepts such as "migration" and "non-migration" or "mobility" and "immobility." In the context of demographic processes, the author proposes the term "immobility," which captures the continuity of residence over time and integrates the concepts of migratory mobility and immobility. The article organizes data on groups of people living in the area and proposes a classification of mobile and immobile populations based on the aspiration/ability model.