We examine the hemispheric organization for the production of two classes of ASL signs, lexical signs and classifier signs. Previous work has found strong left hemisphere dominance for the production of lexical signs, but several authors have speculated that classifier signs may involve the right hemisphere to a greater degree because they can…

Positron emission tomography was used to investigate whether the motor-iconic basis of certain forms in American Sign Language (ASL) partially alters the neural systems engaged during lexical retrieval. Most ASL nouns denoting tools and ASL verbs referring to tool-based actions are produced with a handshape representing the human hand holding a…

Discoveries about the acquisition of American Sign Language (ASL) by deaf children are reviewed. Current research shows that ASL has developed as a fully autonomous language with complex organizational properties not derived from spoken language. Like spoken languages, ASL exhibits formal structuring at two levels and similar organizational…

Presents two studies that explore facial expression production in deaf signers. An experimental paradigm uses chimeric stimuli of American Sign Language linguistic and facial expressions to explore patterns of productive asymmetries in brain-intact signers. (Author/VWL)

Examines recently coined American Sign Language signs to show how the ASL lexicon is expanded. Included are elicited signs for relatively new objects or ideas, signs referring to metalinguistics concepts in ASL, signs used as jargon or specialized vocabulary, and signs "invented" by young deaf children. (Author/PJM)

Investigates sentence processing in a visual-gestural language by testing signers' recognition for American Sign Language sentences. Results indicate that signers decompose a complex sign into its lexical and inflectional components during sentence comprehension and remember the meaning expressed by these components rather than remembering the…

Addresses how affective facial expression interacts with the linguistic forms in American Sign Language (ASL) motherese. The article presents data from both cross-sectional and longitudinal interaction from 15 deaf mothers signing with their deaf toddlers. Findings indicate a shift from affect to grammar at about the child's second birthday. (59…