This article examines trends in American state environmental policy scholarship from 1990 to 2019 and assesses the progress that has been made during that time in addressing the numerous deficiencies noted by Lester and Lombard (1990). A survey of more than 300 published articles suggests that researchers have made significant advances in theory and methodology over the last three decades. Yet some core elements of Lester and Lombard's critique continue to apply, and more work needs to be done to reach their goal of a theoretically coherent and methodologically sound body of research. The article concludes by offering suggestions for scholars working in the field.

中文翻译：

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国家环境政策研究现状：三十年进展报告

本文考察了 1990 年至 2019 年美国州环境政策奖学金的趋势，并评估了在此期间在解决 Lester 和 Lombard (1990) 指出的众多缺陷方面取得的进展。对 300 多篇已发表文章的调查表明，研究人员在过去三年中在理论和方法方面取得了重大进展。然而，莱斯特和伦巴第的批评的一些核心要素继续适用，需要做更多的工作来实现他们的目标，即理论连贯且方法论健全的研究体系。文章最后为在该领域工作的学者提供了建议。