Head Thrust is a significant nonmanual signal in American Sign Language (ASL). It occurs on the final sign in a conditional clause, in combination with a brow raise and a rotated head position. The signal is unlike other grammatical signals involving a brow raise. (Author/CB)

This study of eight severely mentally retarded nonverbal adults examined the form and function characteristics of intentional communication acts. Subjects who engaged in only contact gestures produced no protodeclarative type communication acts, whereas subjects who used distal as well as contact gestures produced some protodeclaratives.…

Presents three sets of data (signs from the "Dictionary of ASL," 1976; loan signs; and case histories of specific signs) that demonstrate the involvement of the "knuckle-wrist connection" with American Sign Language phonology. (AM)

Conventional sign language used by a community of signers over generations was compared with gestures invented by a deaf child over a period of years and with gestures invented by nonsigning hearing individuals on the spot. Findings suggest that an individual can introduce standards of well-formedness, but construction of standards requires…

Reviews research on "homesign" systems, i.e., the gestural communication of deaf individuals who do not learn a spoken language and who are not exposed to a signed language. The article touches on how iconicity affects language structure and use, the role of input in language development, and the nature of the critical period for…

Examines the relation of Pidgin Sign English to American Sign Language and the written English of deaf persons. (AM)

A description of the sign language used in a Mexican village shows its parallels with other sign languages, its similarity to the folk gestural system of Mexico and its distinguishing aspects. Examples illustrate its syntax, grammar and lexicon. (PMJ)

Examined the use of protoimperative and protodeclarative pointing gestures in three children with autism (ages 26 to 53 months) at 5-month intervals over two years. Imperative or instrumental functions emerged early in all three; declarative or experience sharing functions emerged later in two subjects and not at all in the third. (DB)

This study examined representational matching to sample with 68 subjects with severe mental retardation. Participants differed in their expressive communication and included symbolic (speaking) individuals, distal-gesture users, and contact-gesture users. Contact-gesture users performed significantly more poorly on identical matching to sample…

Attempts to prove that users of American Sign Language (ASL) do perform within a closed system of manual and nonmanual sign production features (phonemes and distinctive features). Deaf signers are quite capable of creating nonsense words as well as communicating with signers of other languages through pantomime and other paralinguistic features.…