Semantic Integration and Age of Acquisition Effects in Code-Blend Comprehension

Area of Science:

• Psycholinguistics
• Cognitive Neuroscience
• Bilingualism Research

Background:

• Code-blend facilitation describes enhanced comprehension of American Sign Language (ASL) and spoken English when presented simultaneously.
• This phenomenon suggests an interaction between visual and auditory language processing in bimodal bilinguals.

Purpose of the Study:

• Investigate the underlying mechanisms of code-blend facilitation.
• Determine whether integration occurs at the semantic or lexical (form) level.
• Examine the influence of bilingualism onset (early vs. late) on facilitation effects.

Main Methods:

• Utilized semantic and lexical decision tasks to assess comprehension speed.
• Presented American Sign Language (ASL) signs and spoken English words simultaneously and alone.
• Compared facilitation effects between early and late bilinguals.

Main Results:

• Stronger facilitation effects were observed in semantic decisions compared to lexical decisions.
• Early bilinguals showed greater facilitation than late bilinguals in the semantic task for English.
• Results suggest integration occurs primarily at the semantic level.

Conclusions:

• Code-blend facilitation in bimodal bilinguals is primarily driven by semantic integration.
• Early bilingualism may enhance the ability to use visual ASL cues for spoken English recognition.
• Findings align with research on co-speech gesture integration improving language comprehension.