The Brain-Changing Power of Conversation
The Science Researchers used highly faithful audio recorders — a system called Language Environment Analysis (known as LENA) — to capture every word spoken or heard by 36 4–6 year olds from various socioeconomic backgrounds over two full days. The recordings were analyzed to measure the number of words spoken by each child, the number of words spoken to each child, and the number of conversational turns — back-and-forth exchanges initiated by either adult or child. Comparing those measurements with brain scans of the individual children, the analysis found that differences in the number of conversational turns accounted for differences in brain physiology, as well as for differences in language skills including vocabulary, grammar, and verbal reasoning. Read the MIT News story for a fuller summary of the research. The Takeaways The “conversational turns” are key here, the researchers say.
Related: English in early childhood
• English in early childhood