Common knowledge, coordination, and strategic mentalizing in human social life

Area of Science:

• Social Psychology
• Game Theory
• Cognitive Science

Background:

• Coordination is essential for mutual gain in social interactions.
• Achieving successful coordination requires complementary choices and shared understanding.
• The concept of common knowledge (infinite mutual knowledge) is crucial but complex.

Purpose of the Study:

• To investigate how individuals attain and utilize common knowledge for coordination.
• To explore the distinction between common knowledge and other forms of shared knowledge.
• To examine the strategic deployment of this distinction in social situations.

Main Methods:

• Analysis of social situations with coordination game structures.
• Examination of diverse contexts including market cooperation and moral judgments.
• Theoretical exploration of common knowledge and its social implications.

Main Results:

• People demonstrate high sensitivity to the difference between common knowledge and mere shared knowledge.
• This sensitivity is strategically deployed in various social coordination scenarios.
• The findings highlight the practical application of common knowledge in everyday interactions.

Conclusions:

• Individuals actively distinguish and leverage common knowledge for successful coordination.
• This cognitive ability underpins cooperation in complex social environments.
• Understanding common knowledge is key to explaining diverse social behaviors.