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Logical Concepts of (Im)possibility Guide Young Children's Decision-Making
Nicolò Cesana-Arlotti1, Sofia Jáuregui2, Peter Mazalik2
1Department of Psychology, Yale University, New Haven, Connecticut, USA.
Developmental Science
|June 28, 2025
Summary
Preschoolers demonstrate advanced modal judgment, understanding necessity, possibility, and impossibility. This logical reasoning for decision-making emerges before children master modal language.
Area of Science:
- Cognitive Development
- Developmental Psychology
- Linguistics
Background:
- Rational decision-making relies on modal judgment, distinguishing between what could, must, or cannot happen.
- Previous theories suggested modal judgment develops late, requiring mastery of linguistic structures.
Purpose of the Study:
- To investigate whether preschool-age children possess sophisticated modal judgment abilities.
- To determine if logical concepts for modal judgment precede or follow language acquisition.
Main Methods:
- Two experiments involving 96 children (34-65 months) making decisions to help an agent achieve benefits or avoid harm.
- Assessing children's performance on choices crossing logical categories (necessity, possibility, impossibility) versus probability differences.
Main Results:
- Children performed better on choices involving distinct logical categories (necessity, possibility, impossibility).
- Preschoolers struggled with choices solely based on probability differences, particularly 3-year-olds.
- Performance indicated a spontaneous recruitment of logical concepts for modal judgment.
Conclusions:
- Preschoolers exhibit sophisticated modal judgment, utilizing logical concepts for decision-making.
- The findings suggest that logical understanding of modal categories emerges spontaneously and predates the mastery of modal language.
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