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Symbolic counting skills promote numerically sensitive intolerance for selfishness
Sifana Sohail1, Nadia Chernyak2
1Department of Psychology, Yale University.
Developmental Psychology
|January 29, 2026
Summary
Preschoolers develop more precise fairness norms as their symbolic counting skills improve. This shift involves rejecting extreme inequalities and favoring exact equality in sharing, particularly concerning selfish behavior.
Area of Science:
- Developmental Psychology
- Cognitive Science
- Behavioral Economics
Background:
- Children demonstrate an early interest in fairness and equality.
- Understanding the developmental trajectory of fairness norms in young children is crucial.
Purpose of the Study:
- To investigate developmental shifts in preschool children's fairness norms.
- To examine the role of symbolic counting skills in shaping these norms.
Main Methods:
- Two studies were conducted with 123 preschool-aged children (2.5-6 years).
- Children's sharing behaviors and endorsement of different equality levels were assessed.
- Symbolic counting skills were evaluated, controlling for numerical acuity and null set understanding.
Main Results:
- A developmental shift towards precise sharing norms was observed, including rejection of extreme inequalities and increased endorsement of exact equality.
- Symbolic counting skills predicted this shift, especially in tolerance for selfish sharing.
- Generous sharing was generally tolerated irrespective of numerical abilities.
Conclusions:
- Children's notion of equality becomes more precise as they acquire symbolic counting skills.
- This suggests a transition from abstract fairness concepts to more exact mathematical understanding.
- Numerical development significantly influences the development of fairness norms in early childhood.
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