Overspecification and incremental referential processing: An eye-tracking study

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Human-Computer Interaction

Background:

• Referent selection is crucial for effective communication.
• Overspecification, or providing more descriptive information than necessary, is common in language.
• Understanding how overspecification impacts processing is key to optimizing information delivery.

Purpose of the Study:

• To investigate whether overspecification hinders or facilitates referent selection.
• To examine the role of attribute properties and processing modes (incremental vs. parallel) in overspecification effects.
• To determine the conditions under which additional attributes aid or impede search.

Main Methods:

• Eye-tracking was used to monitor participants' visual search behavior.
• Participants followed spoken instructions to select referents in visual displays.
• Referring expressions were presented either simultaneously (incremental processing) or before (parallel processing) display presentation.

Main Results:

• Under incremental processing, the order and discriminative speed of attributes influenced selection time.
• Color mention after a discriminating pattern delayed selection incrementally but sped it up in parallel processing.
• Pattern mention after a discriminating color delayed selection in both processing modes.

Conclusions:

• Additional attributes facilitate referent selection only when they discriminate rapidly and are processed early.
• The effectiveness of overspecification is contingent on the interplay between attribute properties and processing mode.
• Optimizing referring expressions requires considering attribute salience and processing context.