Presupposition and Implication of Truth: Linguistic Deficits following Early Brain Lesions  

Oleh:

Eisele, Julie A. ; Lust, Barbara ; Aram, Dorothy M.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 61 no. 3 (1998), page 376-394.
Fulltext: 61_03_Eisele.pdf (145.59KB)

Isi artikel

Twenty-four children (4–17 years) with unilateral left (N 5 14) or right (N 5 10) hemisphere damage and 24 age-matched controls were tested on their ability to presuppose the truth of factive sentences e.g., ‘‘Max knew that he locked the door,’’ and to infer the truth or falsity of implicative sentences ‘‘Max remembered to lock the door.’’ Experimental sentence types varied according to the type of inference, the semantic features of the verb (factive vs. implicative), the presence and type of negation (lexical or syntactic), and the syntax of the complement (tensed or infinitive). Relative to age-matched controls, left lesion subjects were deficient in both their presupposition and implication performance, particularly when such inferences required the computation of negation scope. Right lesion subjects exhibited a somewhat more selective deficit; one limited to implication, but not presupposition, and one limited to lexical but not syntactic forms of negation.

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