Children's ambiguous utterances: a re-examination of processing limitations on production

Area of Science:

• Developmental Psychology
• Linguistics
• Cognitive Science

Background:

• Effective communication relies on conveying the right amount of information.
• Children's ability to produce clear messages develops over time.
• Understanding the cognitive demands of communication is key to explaining developmental changes.

Purpose of the Study:

• To investigate the link between children's communication failures and mental effort.
• To examine how cognitive resources influence the production of unambiguous utterances in children.
• To explore the role of working memory and task demands in language development.

Main Methods:

• Assessed mental effort demands using a dual-task paradigm (message production + finger-tapping).
• Measured working memory capacity via spatial memory and object feature identification tasks.
• Evaluated children's understanding of message adequacy through specific tasks.

Main Results:

• By age six, children could select relevant information, suggesting sufficient cognitive resources for explicit requests.
• The relative mental effort required for communication tasks decreased with age.
• Children's ability to produce unambiguous messages improved with age, correlating with reduced effort demands.

Conclusions:

• Children's developing communication skills are influenced by the decreasing cognitive effort demands of tasks.
• Findings support a performance theory of communication development, highlighting effort as a critical factor.
• Age-related improvements in message adequacy are linked to more efficient information processing.