Negotiations in Basel have slowed as Europeans fret that stiffening standards may slow lending and hinder economic recovery.
Instead, they are seen as a signal to banks to slow lending or face more drastic controls.
Lenders are also having trouble making new loans in other states, because banks have slowed lending to them as fears about defaults have grown.
Still reeling from debt woes in Europe and moves by China to slow lending, global markets have lacked direction in recent weeks.
John Moore, an analyst at Wachovia Securities, said banks had slowed lending to some industries, like airlines and textiles, more than to others.
Their rising cost slows lending — something Mr. Stiglitz says is a consequence of governments' bailing out banks without forcing them to make a clean accounting of their losses and bad loans.
Those pledges came just days after the central bank ordered banks to set aside larger capital reserves in a bid to slow lending, the sixth time it has done so this year.
Hints that banks may slow lending set off alarms late last week, and analysts said it was becoming increasingly hard to gauge how swiftly Chinese officials and those of other developing nations would move to pre-empt inflation, which could slow the global recovery.
With banks lending more in the first seven months of this year than in all of last year, the central bank, the People's Bank of China, raised reserve requirements in August and several times has urged banks to slow lending to speculative developments.
Worried that the economy might overheat and spur inflation, Beijing officials have run a budget surplus, repeatedly raised interest rates and even required banks to deposit a remarkable one-sixth of their assets as reserves to the central bank, all to slow lending.
