South Korea’s consumer confidence declined from a five-year high, signaling spending may slow and crimp growth in Asia’s fourth-largest economy. The sentiment index fell to 106 in the fourth quarter, the lowest in three quarters, from 112, the Bank of Korea said today in a report in Seoul. A reading higher than 100 indicates optimists outnumber pessimists.

The benchmark Kospi index of stocks has fallen 8 percent from a Nov. 1 record of 2085.45 on concern U.S. subprime-related losses will slow the global economy. Lehman Brothers Holdings Inc. this month cut its 2008 growth forecast for South Korea to 4.6 percent from 4.7 percent.

The yield on a five-year government bond rose 2 basis points to 5.87 percent at 3:00 p.m. in Seoul and the won gained 0.1 percent to 939.65 versus the dollar. The Kospi climbed 2.2 percent.

Confidence fell as “sentiment on living conditions and the local economy weakened,” the central bank said. “The number of consumers with a negative view on the economy rose sharply.”

South Koreans’ debt-servicing costs have climbed steadily as the central bank has pushed borrowing costs to a six-year high. The Bank of Korea raised rates in July and August to curb household debt that topped 600 trillion won ($640 billion) for the first time in September.

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