The social sciences have grappled with sampling biases, perhaps most notably the prevalent reliance on convenience samples drawn from university student populations. Researchers in second language acquisition (SLA) have likewise taken steps to assess and address the scope of these biases and their effects on theory construction. This special issue presents a collection of replications and registered replication reports comprising one such initiative, titled SLA for All? The replications aimed to evaluate the generalizability of findings from foundational SLA studies, which were obtained with university-educated participants, to nonuniversity participant groups. In this introduction to the special issue, we review and discuss the general failure to replicate the initial results, the complex notion of replication, and questions of research ethics. We offer an in-depth reflection on how our perspectives, practices, and future plans have evolved and conclude with a vision for a more inclusive, diverse, and informative approach to SLA research going forward.

中文翻译：

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揭示抽样偏差、促进包容性并重新思考第二语言习得中的理论解释：面向所有人的特刊 SLA 介绍？

社会科学一直在努力解决抽样偏差问题，也许最值得注意的是普遍依赖从大学生群体中抽取的方便样本。第二语言习得（SLA）研究人员同样采取了措施来评估和解决这些偏见的范围及其对理论构建的影响。本期特刊提供了一系列复制品和注册复制报告，其中包括一个名为“SLA for All？”的此类举措。这些重复旨在评估基础 SLA 研究结果对非大学参与者群体的普遍性，这些研究是在受过大学教育的参与者中获得的。在特刊的引言中，我们回顾并讨论了复制初始结果的普遍失败、复制的复杂概念以及研究伦理问题。我们对我们的观点、实践和未来计划的演变进行了深入反思，并提出了未来 SLA 研究更具包容性、多样化和信息丰富的方法的愿景。