Two-Year-Olds' Eye Movements Reflect Confidence in Their Understanding of Words

Area of Science:

• Developmental Psychology
• Cognitive Science
• Linguistics

Background:

• Children's ability to assess their own understanding is crucial for learning.
• Prior research has not fully explored early confidence evaluation in language comprehension.

Purpose of the Study:

• To investigate whether 2-year-old children evaluate their confidence in word comprehension.
• To examine the influence of social information on children's confidence estimates.

Main Methods:

• Two experiments involving 2-year-olds (N=50 and N=60) were conducted.
• Children were presented with named objects and assessed on their anticipatory looks and post-decision persistence.
• The study manipulated label knowledge and speaker reliability.

Main Results:

• Children demonstrated increased post-decision persistence when they knew the word label, indicating confidence in comprehension.
• Despite accurate word comprehension, children showed reduced confidence when interacting with an unreliable speaker.
• This suggests that social information impacts children's confidence in their language interpretation.

Conclusions:

• By age 2, children can estimate their confidence in language comprehension.
• Children's confidence evaluation is sensitive to social cues and speaker reliability.
• These findings highlight early metacognitive abilities in language development.