Promoting Replicability in Developmental Research Through Meta-analyses: Insights From Language Acquisition Research
Promoting Replicability in Developmental Research Through Meta-analyses: Insights From Language Acquisition Research
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DOI：
10.1111/cdev.13079
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发表时间：
2018-11-01
影响因子：
4.6
通讯作者：
Cristia, Alejandrina
中科院分区：
文献类型：
--
作者：
Bergmann, Christina;Tsuji, Sho;Cristia, Alejandrina
先前的工作表明，可复制性的关键因素包括统计能力和适当的研究规划，这是理论构建的一个必要特征。这些因素是通过分析12项关于出生到5岁之间语言发展的标准化元分析来检验的。由于科恩的中位数效应大小为d=.45，典型样本量为18个参与者，大多数研究的力量不足(范围=6%-99%；中位数=44%)；基于开创性出版物计算力量不是一种合适的策略。方法的选择可以改进，如排除率和效果大小随方法的函数分析所显示的。文章最后讨论了如何在具体的语言习得研究和更广泛的发展研究中提高可复制性。
Previous work suggests that key factors for replicability, a necessary feature for theory building, include statistical power and appropriate research planning. These factors are examined by analyzing a collection of 12 standardized meta-analyses on language development between birth and 5 years. With a median effect size of Cohen's d = .45 and typical sample size of 18 participants, most research is underpowered (range = 6%-99%; median = 44%); and calculating power based on seminal publications is not a suitable strategy. Method choice can be improved, as shown in analyses on exclusion rates and effect size as a function of method. The article ends with a discussion on how to increase replicability in both language acquisition studies specifically and developmental research more generally.