一次重大非传统货币政策干预的影响是什么？
What is the Impact of a Major Unconventional Monetary Policy Intervention?
Journal of the European Economic Association · 2026 · [{"name": "Carlo Alcaraz", "affiliation": ["Bank of Mexico"]}, {"name": "Stijn Claessens", "affiliation": ["Yale University"]}, {"name": "Gabriel Cuadra", "affiliation": ["Bank of Mexico"]}, {"name": "David Marques-Ibanez", "affiliation": ["European Central Bank"]}, {"name": "Horacio Sapriza", "affiliation": ["Federal Reserve Bank of Richmond"]}]
中文摘要
摘要 非常规货币政策干预的可信公告如何影响危机期间的银行贷款标准？我们利用一项重大的央行公告——欧洲中央银行行长那场提振了银行资本的"不惜一切代价"（whatever it takes）讲话——作为自然实验。我们比较了第三国墨西哥境内欧元区银行子公司与其他银行子公司在贷款标准上的变化。该讲话扭转了此前欧元区银行通过贷款增长、贷款利率和信用风险来加大风险承担的趋势。我们的研究结果表明，相当于资本化（注资）的政策能够在压力时期降低风险承担，从而为银行资本渠道增添了一个新的维度。
Abstract
Abstract How does the credible announcement of an unconventional monetary policy intervention affect bank lending standards during crises? We use a major central bank announcement, the “whatever it takes” speech of the European Central Bank President that boosted the capital of banks, as a natural experiment. We compare changes in lending standards of subsidiaries of euro area versus other banks in a third country, Mexico. The speech reversed a prior trend of euro area banks augmenting their risk-taking via loan growth, lending rates, and credit risk. Our findings show that policies that amount to capitalization can reduce risk-taking in times of stress, adding a new dimension to the bank capital channel.