Step 1: Understanding the Concept:
The "Big Push" model is a concept in development economics. It argues that a firm's decision to industrialize or not depends on its expectation of what other firms will do. It emphasizes that for an underdeveloped country to break out of poverty, it requires a large, comprehensive, and coordinated investment program (a "big push") to industrialize and create a sustainable growth path.
Step 2: Identifying the Proponent:
This theory was first proposed by Paul N. Rosenstein-Rodan in his 1943 article, "Problems of Industrialisation of Eastern and South-Eastern Europe." He argued that isolated investment projects would likely fail due to the lack of a market, whereas a large-scale, coordinated push across many sectors could create mutual demand and make industrialization profitable.
Other economists listed are associated with different theories: Harvey Leibenstein (Critical Minimum Effort Thesis), R.R. Nelson (Low-Level Equilibrium Trap), and J.H. Boeke (Dualistic Economy).
Step 3: Final Answer:
The Big Push theory was formulated by Paul N. Rosenstein-Rodan.