Their linguistic input was also of benefit to the works printed.

Grammatical Subjects in home sign: Abstract linguistic structure in adult primary gesture systems without linguistic input.

A major debate in understanding language acquisition is how these capacities are picked up by infants from the linguistic input.

Assuming that eye movements are closely linked to the current focus of attention, language processing can be studied by monitoring eye movements while a subject is presented auditorily with linguistic input.

For example, the cohort model seeks to describe how words are retrieved from the mental lexicon when an individual hears or sees linguistic input.

Language development is thought to proceed by ordinary processes of learning in which children acquire the forms, meanings and uses of words and utterances from the linguistic input.

Chomsky's claim is based upon the view that what children hear - their linguistic input - is insufficient to explain how they come to learn language.

He argues that linguistic input from the environment is limited and full of errors.

Other studies concluded that apes do not understand linguistic input but may form an intended meaning of what is being communicated.

(1) Which properties of language are so fundamental to human language that they will appear in a communication system developed by a child who does not have access to linguistic input?