Just as the United States was not the only country posting a large current account deficit, so too it was not the only country that experienced asset price booms. Figure 2 shows that countries with large current account deficits in 2006 also tended to have larger house price increases. Of course, there are exceptions. For example, China has experienced rapid house price appreciation despite its enormous current account surplus. But, in general, house price appreciation and current account deficits appear to have been positively associated across many countries.
Colin Twiggs: ~ There appears to be a general rule that large current account deficits lead to asset price booms. But to prove the rule researchers need to address why Japan experienced a massive asset price boom in the 1980s, and why China experienced a similar boom over the last decade, when both were running current account surpluses.