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Phonological activation in anaphoric lexical access (ALA).
Brain and Language
|August 6, 1999
Summary
Anaphoric lexical access (ALA) targets word lemmas, not lexemes, explaining the absence of word frequency effects in comprehension. Phonological priming results from incidental activation of word forms (lexemes) during this process.
Area of Science:
- Psycholinguistics
- Cognitive Science
- Computational Linguistics
Background:
- Anaphoric lexical access (ALA) is proposed to target word lemmas, not lexemes.
- The word frequency effect is known to reside at the lexeme level.
- Previous models predict ALA should not show frequency effects, but this conflicts with phonological priming data.
Purpose of the Study:
- To explain how phonological priming occurs if ALA targets lemmas.
- To propose "incidental" lemma-to-lexeme activation as the mechanism for phonological priming.
- To demonstrate that anaphor reading times reflect lemma search times, not lexeme activation.
Main Methods:
- Theoretical argumentation regarding lemma vs. lexeme access in ALA.
- Experimental investigation of lemma-access and its effect on lexeme activation.
- Analysis of reading times to differentiate lemma search from lexeme activation.
Main Results:
- Anaphoric lexical access (ALA) primarily involves lemma retrieval.
- Phonological priming at anaphor sites is explained by incidental lemma-to-lexeme activation.
- Experimental results support the claim that lemma access can incidentally activate lexemes without a frequency effect.
Conclusions:
- Anaphor comprehension relies on lemma access, which is independent of word frequency.
- Incidental lexeme activation during ALA accounts for phonological priming.
- Reading times in ALA tasks reflect lemma search duration, not lexeme processing.