Addresses the principles underlying the merging of interlanguages in multiple-language acquisition. The article claims that there is an "interlanguage logic" in multiple- language acquisition and that one can see the structure of the basic learning strategy in interlanguage creation: "interlingual identification." (seven…

Six papers on interlanguage are presented. The first, "Language Transfer," experimentally tests Robert Lado's contrastive analysis principles on the transfer of language skills to second language acquisition. The second paper, called "Interlanguage," builds on this work in discussing the structured nature of interlanguage and…