WB Cuts Growth Forecast for China, East Asia

However, the economies should also be better prepared for potentially disruptive adjustments.

Hofman said the United States' rewinding of its quantitative easing and loose monetary policy will come a time when the economic growth in the world's largest economy is sustainable.

"Tapering will start. It won't start at a bad time. Therefore the pluses of a thriving United States, which will have lots of import demand from the region, will, in our view, benefit the region," Hofman told reporters.

Speculation about the withdrawal of quantitative easing in the United States led to stock market sell-offs and currency depreciation in countries with large foreign participation in their financial markets over the past few months.

Hofman said the World Bank does not have any specific number on the amount of capital outflow from the emerging markets.

Nevertheless, the World Bank report said that the net capital flows to developing countries between 2008 and 2012 rebounded from US$490 billion to $800 billion. Flows to the East Asia and Pacific region more than doubled to US$460 billion.

Hofman also said that the Federal Reserve's decision to delay the tapering of its quantitative easing will give authorities in the emerging economies a second chance to take measures to lower risks from future volatility.

Adjustment is already happening. One would actually expect that maybe once it happens, there might be "less volatility than what we saw," he said.