Experimental evidence for serial models of lexical access: a judgment task

Area of Science:

• Psycholinguistics
• Cognitive Psychology
• Computational Linguistics

Background:

• Understanding lexical access, the process of retrieving word meaning and form, is crucial in psycholinguistics.
• The debate continues regarding whether lexical access operates in parallel or serial stages.
• Investigating the interplay between phonological and semantic information during word retrieval offers insights into cognitive processes.

Purpose of the Study:

• To test the hypothesis that lemma and lexeme levels of lexical access occur in a feed-forward serial relation.
• To examine how phonological relatedness influences judgments of semantic relatedness in word pairs.
• To determine if sentential context affects the relationship between phonological and semantic relatedness in lexical access.

Main Methods:

• Participants judged the semantic relatedness of synonymous word pairs.
• Stimuli included word pairs that were either phonologically related or unrelated.
• Experiments were conducted both with and without a sentential context.

Main Results:

• Phonologically unrelated word pairs were consistently judged as more semantically related than phonologically related pairs.
• This effect was observed irrespective of whether the word pairs were presented in a sentential context or not.
• The findings indicate a significant influence of phonological form on semantic relatedness judgments.

Conclusions:

• The results support a feed-forward serial model of lexical access.
• Phonological information appears to be processed before or independently of semantic information at certain stages.
• Lexical access models need to account for the interaction between phonological and semantic processing.