Alignment Development Is Not a Unitary Phenomenon: A Comparison of Speech Rate and Lexical Alignment in Children

Area of Science:

• Child Development
• Linguistics
• Psychology

Background:

• Conversational alignment, where speakers mirror each other's communication behaviors, is observed across various communication levels.
• Understanding the interplay between different alignment levels is crucial for comprehending communication development.

Purpose of the Study:

• To investigate the developmental trajectories of conversational alignment at different communication levels in children.
• To examine if early school-aged children exhibiting lexical alignment also demonstrate speech rate alignment.

Main Methods:

• Analyzed a corpus of conversations involving 45 children aged 5-8 years.
• Children interacted with parents and university students in problem-solving and play-based tasks.
• Collected 180 conversational samples across two experimental sessions.

Main Results:

• Children did not exhibit speech rate alignment across different partners and tasks.
• No significant relationship was found between lexical alignment and speech rate alignment.

Conclusions:

• Alignment development in children is not a singular process.
• Different communication levels of alignment may rely on distinct underlying skills and varying degrees of automaticity.