This volume provides an unprecedented insight into current approaches to crosslinguistic influence (CLI). The collection investigates a range of themes including linguistic relativity, the possible contributions of neurolinguistics, the problem of cognitive development and the role of the frequency of structures in acquisition from distinct, overlapping and complementary perspectives. Chapters focusing on vocabulary, morphosyntactic categories, semantic structures, and phonetic and phonological structures feature in the volume, as do over 20 languages, in order to offer new insights into both...