He defines it as "a set of perceptions, images, and belief systems, formed of shared history, culture, nationalism, religion, and ethnicity, which shape the mindsets and behavioral patterns of non-state and authoritarian actors and communities inhabiting a specific geographical area.

Jain has been a member of: In his 2021 book on the geopsychology theory (GT) of international relations,[8] Jain argues that the GT fills the ‘knowledge gap’ in mainstream IR theories that have neglected the role of historical narratives, societal structures, cultural and civilizational values, and belief systems of political actors in constructing and shaping their foreign policy behavior.

His conceptual insights not only help us navigate the stormy ocean of mounting challenges and threats that the world is now facing, but also throw light on the evolving patterns of congruence and disjuncture, and ambiguity and contradiction, in contemporary global power encounters”- Journal of Global South Studies (USA)[10] “The geopsychology theory is a useful framework that helps address case studies that have not been adequately explained by mainstream international relations theories.

Apart from the case studies mentioned in the book, this framework can be used to understand bilateral relations in Northeast Asia, such as Japanese-Korean ties and Chinese-Japanese ties"- Pacific Affairs (Canada)[11] “The book thus represents a most welcome critique of mainstream Western arguments about international conflict, and of their complementary constructivist demands for appropriate learning…He [Jain]serves to demystify the applicability of mainstream international relations theory for understanding major conflicts in the Global South, and between the South and the West.

His book thus makes an important contribution to the deconstruction of a dominant discourse which has its origin in the unipolar power politics of the post-Cold War world system"- Comparative Journal (Germany)[12] “Geopsychology is a new theoretical viewpoint that should be embraced and not shunned.