The impact of migration on child and adolescent development: Diversity in migration pathways and experiencesMigration is a global phenomenon that is rendering contemporary societies increasingly diverse. According to the International Organization for Migration (2020), the number of international migrants has continued to increase rapidly in the last 50 years, reaching more than 270 million in 2019 (3.5% of the total population), up from approximately 84 million in 1970 (2.3% of the total population). Thus, nowadays more than 1 in every 30 people around the world has a migrant background.Understanding how migration affects children and adolescents' development is a priority for scholars, practitioners, and policymakers, and it requires the integration of multiple levels of analyses (Barbot et al., 2020). Notably, migration patterns are highly heterogeneous and include a variety of conditions, such as those of refugees, asylum seekers, first-generation and second-generation immigrants, or internal migrants moving from rural to urban areas. This special issue aims to bring together contributions that tackle such diversity in migration pathways and experiences.The issue comprises two theoretical contributions (