Theoretical concepts of culture shock and adaptation are reviewed, as applied to the pedagogical adaptation of student sojourners in an unfamiliar culture. The historical development of "traditional" theories of culture shock led to the emergence of contemporary theoretical approaches, such as "culture learning", "stress and coping" and "social identification". These approaches can be accommodated within a broad theoretical framework based on the affective, behavioural and cognitive (ABC) aspects of shock and adaptation. This "cultural synergy" framework offers a more comprehensive understanding of the processes involved. Implications for future research, policy and practice are explored. (Contains 2 tables and 2 figures.)