Human languages, signed and spoken, can be characterized by the structural patterns they use to associate communicative "forms" with "meanings." One such pattern is paradigmatic morphology, where complex words are built from the systematic use "and re-use" of sub-lexical units. Here, we provide evidence of emergent…

Languages typically express semantic components of motion events such as manner (roll) and path (down) in separate lexical items. We explore how these combinatorial possibilities of language arise by focusing on (i) gestures produced by deaf children who lack access to input from a conventional language (homesign); (ii) gestures produced by…

Deaf children whose hearing losses prevent them from accessing spoken language and whose hearing parents have not exposed them to sign language develop gesture systems, called "homesigns", which have many of the properties of natural language--the so-called resilient properties of language. We explored the resilience of structure built…

Does spatial language influence how people think about space? To address this question, we observed children who did not know a conventional language, and tested their performance on nonlinguistic spatial tasks. We studied deaf children living in Istanbul whose hearing losses prevented them from acquiring speech and whose hearing parents had not…

Commenting on perceptual similarities between objects stands out as an important linguistic achievement, one that may pave the way towards noticing and commenting on more abstract relational commonalities between objects. To explore whether having a conventional linguistic system is necessary for children to comment on different types of…

When children learn language, they apply their language-learning skills to the linguistic input they receive. But what happens if children are not exposed to input from a conventional language? Do they engage their language-learning skills nonetheless, applying them to whatever unconventional input they have? We address this question by examining…

The gesture systems developed by 10 deaf children, each incapable of acquiring a conventional spoken language naturally and not exposed to a conventional manual language by their hearing parents, were compared and contrasted to both the speech and the gesture systems developed by three hearing children learning English. (Author/BE)

The study examined whether deaf children's gesture systems are structured at the morpheme level of analysis. A 3-year-old deaf child from the authors' previous study was selected and all of his characterizing signs produced during a 2-hour naturalistic play session in his home were videotaped. Each sign was coded in terms of its handshape, motion,…

Reports that four deaf children of hearing parents, who lacked usable conventional linguistic input, developed a gestural communication system that showed some of the structural regularities characteristic of early child language. Suggests that communication with a number of language-like properties can develop in an atypical language-learning…

Compared gestures of Chinese and American deaf children who had not been exposed to a usable conventional language model with speech of hearing children learning Mandarin or English. Found that deaf children conveyed central elements of motion events in their communications. Deaf American and Chinese children used gestures to express motion in…

The question is addressed whether a child would develop a communication system if a conventional linguistic model is absent. Six congenitally deaf children, who were not exposed to Sign Language, were observed and videotaped at play in their homes at intervals of one to three months. The children ranged in age from 1 year, 5 months to 4 years, 1…