Book excerpt: How do children acquire language? How does real life language acquisition differ from results found in controlled environments? And how is modern life challenging established theories? Going far beyond laboratory experiments, the International Handbook of Language Acquisition examines a wide range of topics surrounding language development to shed light on how children acquire language in the real world. The foremost experts in the field cover a variety of issues, from the underlying cognitive processes and role of language input to development of key language dimensions as well as both typical and atypical language development. Horst and Torkildsen balance a theoretical foundation with data acquired from applied settings to offer a truly comprehensive reference book with an international outlook. The International Handbook of Language Acquisition is essential reading for graduate students and researchers in language acquisition across developmental psychology, developmental neuropsychology, linguistics, early childhood education, and communication disorders.