Scrutinizing reference adaptation: Do people only adapt to infrequent discourse structures?

Area of Science:

• Psycholinguistics
• Cognitive Science
• Computational Linguistics

Background:

• Pronoun resolution relies on contextual cues, often favoring the sentence subject.
• Recent research indicates pronoun biases adapt to local linguistic patterns.
• The mechanism of referential adaptation, distinct from word/structure adaptation, remains unclear.

Purpose of the Study:

• To investigate if all recent exposures equally influence pronoun processing biases.
• To determine if referential adaptation follows an "inverse frequency effect," similar to syntactic adaptation.
• To test if learning occurs primarily with unexpected (less frequent) linguistic patterns.

Main Methods:

• Two experiments compared processing biases after subject-reference, nonsubject-reference, and neutral exposures.
• Participants resolved ambiguous pronouns following different contextual patterns.
• Behavioral data analyzed to detect shifts in pronoun bias.

Main Results:

• Exposure to the less common nonsubject-reference pattern significantly altered processing biases compared to neutral exposure.
• Exposure to the more common subject-reference pattern did not yield a significant difference from neutral exposure.
• These findings support an "inverse frequency effect" in referential adaptation.

Conclusions:

• Referential adaptation is not uniform; it is influenced by the frequency of contextual patterns.
• Learning in pronoun resolution appears driven by encountering less frequent, thus unexpected, linguistic structures.
• This suggests error-based learning mechanisms may underlie referential adaptation.