Includes bibliographical references and indexes.

Individual differences in second language learning : introduction / Leah Roberts and Antje Meyer -- Individual differences in L2 learning and long-term L1-L2 relationships / Richard L. Sparks -- Nature and nurture in school-based second language achievement / Philip S. Dale, Nicole Harlaar, and Robert Plomin -- Determinants of success in native and non-native listening comprehension : an individual differences approach / Sible Andringa ... [et al.] -- Individual differences in the acquisition of a complex L2 phonology : a training study / Adriana Hanulíková ... [et al.] -- The structural connectivity underpinning language aptitude, working memory, and IQ in the Perisylvian language network / Huadong Xiang ... [et al.] -- First and second language speech perception : graded learning / Núria Sebastián-Gallés and Begoña Díaz -- Second language proficiency and cross-language lexical activation / Janet G. van Hell and Darren Tanner -- Individual differences in second language sentence processing / Leah Roberts -- Interactions between individual differences, treatments, and structures in SLA / Robert DeKeyser.