Components of Stroop-like interference in word reading.

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Experimental Psychology

Background:

• Picture naming shows Stroop-like interference when distractors share semantic categories.
• Semantic similarity and relevance of distractor words contribute to this interference.
• Previous research suggests interference originates in target-name retrieval.

Purpose of the Study:

• To test if semantic interference effects diminish in a word-reading task compared to picture naming.
• To investigate the influence of semantic relatedness, relevance, response set membership, and wordness on interference.
• To determine if interference is specific to name retrieval or a more general semantic process.

Main Methods:

• Experiments compared semantic interference effects in picture naming versus word reading tasks.
• Four distractor characteristics were systematically varied: semantic relatedness, relevance, response set membership, and wordness.
• Response times were measured to assess interference effects.

Main Results:

• Semantic interference effects were not significant in the word-reading task, unlike in picture naming.
• Only the 'wordness' of the distractor significantly affected responses in the word-reading task.
• Further experiments confirmed that limited distractor exposure time did not account for the absence of semantic effects.

Conclusions:

• The findings support a name-retrieval account for semantic interference in naming tasks.
• Semantic interference appears specific to the process of retrieving the name of a target, rather than general semantic processing.
• The locus of semantic interference is likely within the lexical access stage of speech production.