Repeat After Us: Syntactic Alignment is Not Partner-Specific.

Area of Science:

• Psycholinguistics
• Computational Linguistics
• Cognitive Science

Background:

• Conversational alignment, the process of matching speech patterns with interaction partners, is a fundamental aspect of human communication.
• Alignment can manifest as partner-specific (matching individual distributions) or partner-independent (matching aggregated statistics).
• Previous research primarily examined alignment in contexts where it offered clear communicative advantages.

Purpose of the Study:

• To investigate whether speakers exhibit partner-specific alignment in the absence of a communicative need.
• To determine if the mechanism driving alignment is sensitive to communicative and social factors within the linguistic context.
• To explore the conditions under which speakers adjust their alignment strategies.

Main Methods:

• Five experiments were conducted involving participants interacting with two experimenters.
• Each experimenter consistently used unique syntactic structures (e.g., double object vs. prepositional datives).
• Participants' speech patterns were analyzed across various exposure conditions to assess alignment strategies.

Main Results:

• Participants demonstrated partner-independent alignment, matching aggregated linguistic statistics.
• Crucially, participants did not show evidence of partner-specific alignment.
• Alignment patterns were observed even when partner-specificity offered no discernible communicative utility.

Conclusions:

• The findings suggest that alignment mechanisms are communicatively modulated.
• Speakers prioritize general statistical patterns over specific partner cues when partner-specific alignment lacks communicative utility.
• This supports a model where alignment is dynamically adjusted based on the perceived communicative value of the interaction.