The development of social brain functions in infancy

Area of Science:

• Developmental Neuroscience
• Cognitive Psychology
• Infant Social Cognition

Background:

• Understanding human sociality is a fundamental psychological question.
• Neuroscience methods like EEG/ERPs and fNIRS have advanced infant social cognition research.
• Principles guiding early social brain development remain largely unexplored.

Purpose of the Study:

• To propose a framework for understanding the developmental principles of the infant social brain.
• To integrate existing neuroscience findings on early social information processing.
• To offer a principle-based approach for studying neural correlates of infant social cognition.

Main Methods:

• Conceptual integration of existing electroencephalography (EEG)/event-related brain potentials (ERPs) and functional near-infrared spectroscopy (fNIRS) studies.
• Review and synthesis of empirical examples illustrating developmental emergence of principles in infancy.
• Discussion of domain-general versus social-specific properties of developmental principles.

Main Results:

• A framework is presented delineating six key principles in early social brain development: self-relevance, joint engagement, predictability, categorization, discrimination, and integration.
• Empirical examples demonstrate the emergence of these principles during infancy.
• The principles are discussed in relation to domain-general developmental processes.

Conclusions:

• The proposed principles offer a structured approach to understanding the neural basis of infant social cognition.
• This framework integrates current EEG/ERPs and fNIRS research on infant social brain function.
• Further research can build upon this principle-based approach to elucidate early social development.