In relationships in which the outsourced task requires a high degree of creativity on the part of the supplier , ex ante contractual control is shown to increase supplier performance 如果外包任务在创新性方面对供应商有很高的要求，那么事前的合同约束被证明是可以提高供应商绩效的。
While economists designing plans may worry about ex ante welfare costs , public or private plan administrators may also worry about ex post regret - the after - the - fact costs of a decision 经济学家在制订退休金计划时，事先福利成本是个难以解决的问题。而对公众或私人计划的管理人来说，他们所要操心的还有后悔成本，即在知道结果后的成本。
For instance , for someone with minimal risk aversion , investing too little in equities can lead to large " ex ante welfare costs , " or the anticipated costs of making a decision before the outcome is known 例如，有人规避风险的心理不怎么强，如果他在股票中投入的比例太低，就会产生大量“事先福利成本” ，即在知道结果前先做决定的预期成本。
For example , a fairness - based theory of torts might consider future consequences in assessing legal rules , and even utilitarian legal theories must use ex ante information when evaluating particular cases 举个例子就可以说明这个问题，某种基于公平考量的侵权法理论或许也会虑及运用规则之后的效果，而即使功利主义法律理论在衡量具体案件之时也不可以无视“事后”的信息。
The investment environment ( ie ) as an ex ante factor for gaining the good investment efficiency , becomes to be more and more important because the same amount of investment indifferent regions can achieve different profit . the research on the ie is increasingly paid attention to as well 由于同一投资在不同地域内取得的经济效益可能不相同，投资环境就成为获取投资效益的外部因素而变得日益重要，对投资环境的研究也日益得到社会的重视。
Long - time practice used to cope with drought risk by farm households has resulted in the set of ex ante and ex post coping mechanisms , and researches show that those coping mechanisms are wise in terms of their own resources , it is however not true in terms of the social or macro - utilization of resources 农户在长期对付干旱风险的实践中形成了事前、事后处理策略，国外相关农户研究表明相对农户自身所拥有的资源而言，这些处理策略是理性的，虽然从社会或宏观的资源利用角度而言，可能并非如此。
