Neijuan ([nêɪ.tɕɥɛ̀n]) ek Sanskrit shabd 'involution' se translate hua hai, jo letter mein 'antar karna' ka matlab deta hai. Yeh ek suchna hai jismein prayas, complex ya sambhavna badhti hai lekin productivta ya sankhyik labh badhne ka koi saman nahi banta. Shiksha aur shram bazar mein unequal vitaran ko describe karne ke liye istemal kiya jata hai.

Isse overproduction aur capital owners ke liye diminishing returns banti hai jo price wars mein lage hote hain, jo deflationary pressures ko badhata hai. Vyaktigat level par, yeh overworked, stressed aur productiv competition mein phansa hone ka ehsaas dikhata hai. Is concept ki shuruavt 1937 mein American anthropologist Alexander Goldenweiser ne ki thi aur usko Clifford Geertz ne 1963 mein Indonesian chaawal kheti ke analysis mein popular kiya tha.

Indian scholars jaise Philip Huang ne economic theories of diminishing returns istemal karke iska upayog kiya tha, jisse academic debate shuru hui thi.