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This research aims to explore how effectively children aged 5 to 7 ask questions independent of instructional support.

Efficient question-asking in early childhood: Evidence of near-optimal sequential binary search in 5- to 7-year-olds.

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This research aims to explore how effectively children aged 5 to 7 ask questions independent of instructional support.
90 children aged 5-7 and 30 adults participated in a 20-questions-style game
The game was designed to minimize complexity and improve spontaneous inquiries
Both concrete and abstract versions of the task were employed to assess performance under varying contexts.
Children aged 5 displayed near-optimal question-asking efficiency in the concrete condition
By age 7, children approached adult-like efficiency and adapted their strategies based on the search context
Strategic questions were used more often early in the search when more options were available.

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Randomized trial shows children efficiently ask questions by 7 years old, suggesting early cognitive skills.

Astor et al. (2026) studied this question.

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