Recent research on the syntax of signed languages has revealed that, apart from some modality-specific differences, signed languages are organized according to the same underlying principles as spoken languages. This book addresses the organization and distribution of functional categories in American Sign Language (ASL), focusing on tense, agreement, and wh-constructions.Signed languages provide illuminating evidence about functional projections of a kind unavailable in the study of spoken languages. Along with manual signing, crucial information is expressed by specific movements of the...