Examine the Harrod-Domar growth model in development economics. What is the central proposition of this theoretical framework regarding economic growth?

💡 Solution & Explanation

The Harrod-Domar model posits that economic growth relies on two fundamental variables: the level of national savings and the capital-output ratio. To achieve a higher growth rate, an economy must either increase its saving ratio or decrease the amount of capital required to produce a unit of output. The model highlights the knife-edge equilibrium problem, suggesting that steady-state growth is difficult to maintain without deliberate policy intervention. Subsequent neoclassical growth models, such as the Solow-Swan model, introduced variable capital-output ratios and technological change.