Book excerpt: Lexical Borrowing and Deborrowing in Spanish in New York City provides a sociodemographic portrait of lexical borrowing in Spanish in New York City. The volume offers new and important insights into research on lexical borrowing. In particular, it presents empirical data obtained through quantitative analysis to answer the question of who is most likely to use English lexical borrowings while speaking Spanish, to address the impact that English has on Spanish as spoken in the city and to identify the social factors that contribute to language change. The book also provides an empirical, corpus-based-approach to distinguishing between borrowing and other contact phenomena, such as codeswitching, which will be of interest to scholars of language contact and bilingualism.