EFFECT SIZE-DRIVEN SAMPLE-SIZE PLANNING, RANDOMIZATION, and MULTISITE USE in L2 INSTRUCTED VOCABULARY ACQUISITION EXPERIMENTAL SAMPLES

Joseph P. Vitta, Christopher Nicklin, Stuart McLean

研究成果: ジャーナルへの寄稿学術誌査読

14 被引用数 (Scopus)

抄録

In this focused methodological synthesis, the sample construction procedures of 110 second language (L2) instructed vocabulary interventions were assessed in relation to effect size-driven sample-size planning, randomization, and multisite usage. These three areas were investigated because inferential testing makes better generalizations when researchers consider them during the sample construction process. Only nine reports used effect sizes to plan or justify sample sizes in any fashion, with only one engaging in an a priori power procedure referencing vocabulary-centric effect sizes from previous research. Randomized assignment was observed in 56% of the reports while no report involved randomized sampling. Approximately 15% of the samples observed were constructed from multiple sites and none of these empirically investigated the effect of site clustering. Leveraging the synthesized findings, we conclude by offering suggestions for future L2 instructed vocabulary researchers to consider a priori effect size-driven sample planning processes, randomization, and multisite usage when constructing samples.

本文言語英語
ページ(範囲)1424-1448
ページ数25
ジャーナルStudies in Second Language Acquisition
44
5
DOI
出版ステータス出版済み - 12月 6 2022

!!!All Science Journal Classification (ASJC) codes

  • 教育
  • 言語および言語学
  • 言語学および言語

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