Numerical cognition explains age-related changes in third-party fairness.

Area of Science:

• Developmental Psychology
• Cognitive Science
• Behavioral Economics

Background:

• Young children exhibit fairness in sharing, but the cognitive underpinnings remain unclear.
• Understanding the mechanisms supporting early fairness is crucial for developmental research.

Purpose of the Study:

• To investigate the relationship between children's numerical competencies and their fair sharing behavior.
• To explore how numerical knowledge influences resource allocation strategies in preschoolers.

Main Methods:

• Preschoolers (2.5-5.5 years) engaged in third-party resource allocation tasks.
• Children's numerical competence was assessed using the Give-N task.
• Sharing strategies were observed during resource division between puppets.

Main Results:

• Knowledge of the cardinal principle significantly explained age-related improvements in fair sharing.
• Children with lower numerical competence (subset-knowers) used turn-taking strategies and recalled fewer resources.
• Fair sharing was observed across different numerical competence levels, but strategies varied.

Conclusions:

• Numerical cognition is a key mechanism supporting fair sharing in young children.
• Children adapt their sharing strategies based on their level of numerical understanding.
• This study highlights the interplay between cognitive development and prosocial behavior.