求翻译：诺贝尔奖评审委员会当日宣布，两人以他们对“宏观经济因果关系上的实验法研究”上所作出的贡献，共同获得2011年度诺贝尔经济学奖。两人以统计分析方式研究经济政策和宏观经济变量之间的关系，解决经济政策是否实现政策制定者目的的问题。西姆斯的研究主要针对突发的经济政策变动可能带来的影响,而萨金特的研究面向经济政策引发的经济长期结构性变化。他被认为是理性预期学派的领军人物。是什么意思？

Nobel Prize Committee announced the same day, both to their "cause and effect relationship between macroeconomic empirical research" on the contribution, shared the 2011 Nobel Prize in Economics. Two way statistical analysis of economic policy and macroeconomic variables of the relationship between

正在翻译，请等待...

Nobel Prize Committee announced the same day, both to their "cause and effect relationship between macroeconomic empirical research" on the contribution, shared the 2011 Nobel Prize in Economics. Two way statistical analysis of economic policy and macroeconomic variables of the relationship between