Biolinguistics (E-Journal)
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A Program for the Genetics of Grammar
No full textDeparting from Lenneberg’s biological conception of language and its de- velopment, this paper first reviews select examples from research on lan- guage development and its interface with genetics before making some specific proposals with regard to how the genetics of grammar could be investigated. The central proposal of this paper is that an important, per- haps necessary, avenue for studying the genetics of grammar is to study the genotypes corresponding to phenotypes of child (and genetically im- paired) versions of the computational system of grammar, as opposed to strictly descriptive measures of a construction or standardized linguistic tests. In some cases, these phenotypes have wide explanatory ability, sug- gesting that they directly involve parts of the computational system of lan- guage. The primary example discussed is the phenotype of the Unique Checking Constraint (UCC). In particular, it is proposed that one could usefully start to investigate the genetic basis for he development of finite- ness, object clitic omission, and related phenomena of the UCC. A second, less developed example here, corresponding to a much later developmen- tal stage, is the Universal Phase Requirement (UPR), regulating verbal pas- sives and many other phenomena in children
The Externalization Component as the Locus of Specific Impairments
No full textIn the last years, Chomsky has defended a strong divide between a core, thought-related component of the faculty of language (FL), and a peripheral, sensory-motor dedicated one, in support of which he has mostly drawn from design and evolutionary arguments. This paper adds to these lines of reasoning some evidence from forms of language impairment that, it is argued, may be understood as selectively affecting the latter component (Externalization). Previous accounts suggest that certain variants of specific language impairment (SLI) affect the Syntax–Phonology interface, including the Morphology component. The Linearization converter is also argued to be typically affected, so one might refer to such variants of SLI as instances of a specific externalization impairment (SEXTI). The data presented here suggest comprehension difficulties with object relative clauses in children with SLI, which, contrary to previous analyses, are argued to be due to linearization problems. The main objective of this paper is to illustrate how clinical linguistics may help to define aspects of the evolved linguistic phenotype, like the above-mentioned divide
Lenneberg’s Contributions to the Biology of Language and Child Aphasiology: Resonation and Brain Rhythmicity as Key Mechanisms
No full textThis paper aims to re-evaluate the legacy of Eric Lenneberg’s monumental Biological Foundations of Language, with special reference to his biolinguistic framework and view on (child) aphasiology. The argument draws from the following concepts from Lenneberg’s work: (i) language (latent struc- ture vs. realized structure) as independent of externalization; (ii) resonance theory; (iii) brain rhythmicity; and (iv) aphasia as temporal dysfunction. Specifically, it will be demonstrated that Lenneberg’s original version of the critical period hypothesis and his child aphasiology lend themselves to elucidating a child aphasia of epileptic origin called Landau-Kleffner syndrome (LKS), thereby opening a possible hope for recovery from the disease. Moreover, it will be claimed that, to the extent that the language disorder in LKS can be couched in these terms, it can serve as strong “liv- ing” evidence in support of Lenneberg’s critical period hypothesis and his view on child aphasiology
