marginal productivity of capital वाक्य

I tested him by means of a question about the " Wicksell effect ", i . e . the special aspects of the marginal productivity of capital, which at that time was practically unknown in most countries outside of Scandinavia.
Both Radelet and Sachs agreed that Krugman's critique is correct on a general point . " To the extent that growth is driven by capital accumulation rather than pure productivity gains, the marginal productivity of capital is likely to decline as the capital stock deepens-- that is, as capital per worker in the Asian economies rises to the level of Western economies, " they said.