This collection of 16 papers covers theoretical issues and research on interlanguage development and second language acquisition variables. Among the specific topics addressed are: morpheme group interactions, acquisition of complex sentences in English as a second language, uniformity in interlanguage development, Spanish-English basilang, acquisition and forgetting of Hindi-Urdu negation by English speaking children, contact-induced language change, immersion program results, age differences in second language acquisition, the role of the right hemisphere in second language acquisition, self-esteem and the acquisition of French, and cloze procedures in relation to long term vocabulary retention. (RW)