Semantic interference in a delayed naming task: evidence for the response exclusion hypothesis

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Neuroscience

Background:

• The picture-word interference paradigm is a key tool for investigating cognitive processes in language production.
• Understanding the timing and locus of semantic interference is crucial for models of word retrieval.

Purpose of the Study:

• To investigate the locus of semantic interference in picture naming by manipulating presentation timing and word frequency.
• To determine if semantic interference effects are dependent on the bottleneck of lexical selection.

Main Methods:

• Two experiments used a picture-word interference paradigm with simultaneous or delayed presentation of distractor words.
• Distractor words were either semantically related or unrelated to target pictures.
• Picture name frequency was manipulated orthogonally to semantic relatedness.

Main Results:

• Semantic interference effects were observed in both immediate and delayed naming conditions.
• Frequency effects were only found in the immediate naming condition.
• Semantic interference occurred even when picture naming latencies did not reflect lexical selection bottlenecks.

Conclusions:

• Semantic interference in picture naming can arise from postlexical processing.
• These findings challenge models where semantic effects are solely attributed to prelexical or lexical selection stages.
• The locus of semantic interference is likely postlexical, distinct from frequency effects.