PURPOSE: Phonetic training has been found to be an effective way on second language (L2) learning, but the evidence is not conclusive regarding the effectiveness of different instructional approaches and possible interactions between language learners, training features, and outcome measures. This study aims to meta-analyze existing studies to provide an accurate estimate of the overall effect and investigate factors that may moderate its effectiveness. METHOD: We conducted a systematic search in major databases, identified seven potential moderators, and conducted a random-effects model meta-...
