Cross-modal distraction by background speech: what role for meaning?

Area of Science:

• Cognitive Psychology
• Auditory Perception
• Memory Research

Background:

• Concurrent irrelevant speech is known to disrupt cognitive tasks.
• Existing theories primarily explain effects in serial recall tasks.
• The impact of irrelevant speech on meaning-based retrieval remains less understood.

Purpose of the Study:

• To extend the 'interference by process' framework to meaning-based verbal tasks.
• To investigate how semantic characteristics of irrelevant speech affect retrieval.
• To explore the role of source monitoring in irrelevant speech effects.

Main Methods:

• Experimental design involving free recall, category-clustering, and fluency tasks.
• Manipulation of semantic relatedness between irrelevant speech and focal task content.
• Analysis of disruption levels based on semantic features and task demands.

Main Results:

• Semantic features of irrelevant speech significantly interact with semantic retrieval in focal tasks.
• Disruption levels vary across free recall, category-clustering, and fluency tasks.
• Source monitoring deficits partially explain the observed interference from irrelevant speech.

Conclusions:

• The 'interference by process' framework can be extended to meaning-based verbal tasks.
• Semantic relatedness and task demands are crucial in determining irrelevant speech effects.
• Both interference by content and attentional capture models are considered alongside the proposed framework.