The collection provides a rich picture of the current status of theoretically guided studies on first and second language acquisition and pathology by some of the most engaged young and senior researchers. Articles ranging from the acquisition of different syntactic structures and computations to issues related to semantic interpretation and phonological analyses are presented. The book is a representative illustration of the comparative perspective in the study of language acquisition and pathology as data from several different languages are considered in fine detail in the various articles. The book will be of interest to all working on language acquisition and pathology and it will provide students with a most updated picture of the most studied current issues in the filed.