We present a new measure of judicial ideology based on judicial hiring behavior. Specifically, we utilize the ideology of the law clerks hired by federal judges to estimate the ideology of the judges themselves. These Clerk-Based Ideology (CBI) scores complement existing measures of judicial ideology in several ways. First, CBI scores can be estimated for judges across the federal judicial hierarchy. Second, CBI scores can capture temporal changes in ideology. Third, CBI scores avoid case selection and strategic behavior concerns that plague existing vote-based measures. We illustrate the promise of CBI scores through a number of applications.

中文翻译：

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使用法律文书雇用来衡量司法思想

我们提出一种基于司法雇用行为的司法思想新措施。具体来说，我们利用联邦法官聘用的法律文员的意识形态来估计法官本身的意识形态。这些基于职员的意识形态（CBI）分数以多种方式补充了现有的司法意识形态度量。首先，可以估算联邦司法体系中法官的CBI分数。其次，CBI分数可以反映意识形态的时间变化。第三，CBI评分避免了困扰现有基于投票的度量标准的案例选择和战略行为问题。我们通过许多应用说明了CBI分数的前景。