"Leonard's study will be indispensable for anyone who needs to keep current on child language development in general, and developmental language pathologies in particular. . . . One of the preeminent scholars in the field, Leonard offers a fairly balanced view of specific language impairment in children, no easy task given the controversial nature of the subject. He also provides a comprehensive review of the literature, from the earliest beginnings of work in this field in the last century down to the very latest references. As a resource for students at all levels and for scholars of language development, this work is simply unparalleled."
—L. E. Hewitt, Choice