Abstract Chomsky, the central, ‘biologically isolated’ property of language and the source of its infinite scope is syntax, the abstract, linguistic, computational system by which discrete, meaningful units (morphemes, words) are combined to form an infinite variety of phrases and sentences. An important mechanism of syntax is recursion, the embedding of a phrase within a phrase that permits, in principle, sentences of infinite length and affords language much of its power to express new thoughts appropriate to new situations. Indeed, in a recent paper, Hauser, Chomsky, and Fitch (2002: 1571) term recursion a ‘core property’ of language.

... within models of the linguistic architecture itself ( Perlman and Woodin 2021 ) . A more recently considered design feature is recursion , particularly as it pertains to syntactic structure . Recursion is a formal property where units ... Natural human communication is multimodal. We pair speech with gestures, and combine writing with pictures from online messaging to comics to advertising. This richness of human communication remains unaddressed in linguistic and cognitive theories which maintain traditional amodal assumptions about language. What is needed is a new, multimodal paradigm. This book posits a bold reorganization of the structures of language, and heralds a reconsideration of its guiding assumptions. Human expressive behaviors like speaking, signing, and drawing may seem distinct, but they decompose into similar cognitive building blocks which coalesce in emergent states from a singular multimodal communicative architecture. This cognitive model accounts for unimodal and multimodal expression across all of our

school of thought, the key feature distinguishing human language is recursion, (in this context, the iterative embedding of phrases within phrases). Other The origin of language, its relationship with human evolution, and its consequences have been subjects of study for centuries. Scholars wishing to study the origins of language draw inferences from evidence such as the fossil record, archaeological evidence, and contemporary language diversity. They may also study language acquisition as well as comparisons between human language and systems of an T… A distinction can be drawn between speech and language. Language is not necessarily spoken: it might alternatively be written or signed. Speech is among a number of different methods of encoding and transmitting linguistic information, albeit arguably the most natural one. Some scholars, such as Noam Chomsky, view language as an initially cognitive development, its "externalisation" to serve communicative purposes occurring later in human evolution. According to one such school of thought, the key feature distinguishing human language is recursion, (in this context, the iterative embedding of phrases within phrases). Other scholars—notably Daniel Everett—deny that recursion is universal, citing certain languages (e.g. Pirahã) which allegedly lack this feature. The ability to ask questions is considered by some to distinguish language from non-human systems of communication. Some captive primates (notably bonobos and chimpanzees), having learned to use rudimentary signing to communicate with their human trainers, proved able to respond correctly to complex questions and requests. Yet they failed to ask even the simplest questions themselves. Conversely, human children are able to ask their first questions (using only question intonation) at the babbling period of their development, long before they start using syntactic structures. Although babies from different cultures acquire native languages from their social environment, most languages of the world use similar rising "question intonation" for yes–no questions. This fact is a strong evidence of the universality of question intonation. In general, according to some authors, sentence intonation/pitch is pivotal in spoken grammar and is the basic information used by children to learn the grammar of whatever language.

The Pirahã language has been at the center of recent debates in linguistics, in large part because it is claimed not to exhibit recursion, a purported universal of human language. Here, we present an analysis of a novel corpus of natural Pirahã speech that was originally collected by Dan Everett and Steve Sheldon. We make the corpus freely available for further research. In the corpus, Pirahã sentences have been shallowly parsed and given morpheme-aligned English translations. We use the corpus to investigate the formal complexity of Pirahã syntax by searching for evidence of syntactic embeddi

It is a truism that conceptual understanding of a hypothesis is required for its empirical investigation. However, the concept of recursion as articulated in the context of linguistic analysis has been perennially confused. Nowhere has this been more evident than in attempts to critique and extend Hauseretal's. (2002) articulation. These authors put forward the hypothesis that what is uniquely human and unique to the faculty of language-the faculty of language in the narrow sense (FLN)-is a recursive system that generates and maps syntactic objects to conceptual-intentional and sensory-motor systems. This thesis was based on the standard mathematical definition of recursion as understood by Gödel and Turing, and yet has commonly been interpreted in other ways, most notably and incorrectly as a thesis about the capacity for syntactic embedding. As we explain, the recursiveness of a function is defined independent of such output, whether infinite or finite, embedded or unembedded-existent or non-existent. And to the extent that embedding is a sufficient, though not necessary, diagnostic of recursion, it has not been established that the apparent restriction on embedding in some languages is of any theoretical import. Misunderstanding of these facts has generated research that is often irrelevant to the FLN thesis as well as to other theories of language competence that focus on its generative power of expression. This essay is an attempt to bring conceptual clarity to such discussions as well as to future empirical investigations by explaining three criterial properties of recursion: computability (i.e., rules in intension rather than lists in extension); definition by induction (i.e., rules strongly generative of structure); and mathematical induction (i.e., rules for the principled-and potentially unbounded-expansion of strongly generated structure). By these necessary and sufficient criteria, the grammars of all natural languages are recursive.

... embedded sentences . We will illustrate sentence em- bedding fairly fully but before this is done , attention should perhaps be directed to what is known as recursion or recursiveness as a property of language . Recursiveness ; sentence ...

Much debate has been stimulated by the recent hypothesis that human language consists of a faculty that is shared with non-human animals (faculty of language in a broad sense; FLB) and a faculty that is specific to human language (faculty of language in a narrow sense; FLN). This hypothesis has encouraged a tendency to emphasize one component of FLN: the cognitive operation of recursion. In consequence, non-syntactical, yet unique, aspects of human language have been neglected. One of these properties consists of vocal learning that enables an abundance of learned syllables. I suggest that FLN is not an independent faculty, but an 'emergent' property, arising from interactions between several other non-syntactical subfaculties of FLB, including vocal learning ability.