The calculation and use of effect sizes—such as d for mean differences and r for correlations—
has increased dramatically in second language (L2) research in the last decade …

Research on the effects of second language strategy instruction (SI) has been extensive yet
inconclusive. This meta‐analysis, therefore, aims to provide a reliable, quantitative measure …

Second language (L2) anxiety has been the object of constant empirical and theoretical
attention for several decades. As a matter of both theoretical and practical interest, much of …

The goal of this study was to determine the overall effects of pronunciation instruction (PI) as
well as the sources and extent of variance in observed effects. Toward this end, a …

Now in a fifth edition, this bestselling introductory textbook remains the cornerstone volume
for the study of second language acquisition (SLA). Its chapters have been fully updated …

In this second edition of the best-selling Second Language Research, Alison Mackey and
Sue Gass continue to guide students step-by-step through conducting the second language …

Is acquiring a third language the same as acquiring a second? Are all instances of non-
native language acquisition simply one and the same? In this first book-length study of the …

Despite an abundance of research on corrective feedback (CF) in L2 writing, answers to
fundamental questions of whether and to what extent various types of CF can promote …

The purposes of this study were to investigate the overall effectiveness of extensive reading,
whether learners' age impacts learning, and whether the length of time second language …

This study investigates the effects of corpus use on second language (L2) vocabulary
learning as well as the influence of moderators on effectiveness. Based on 29 studies …