The systematic physical, cognitive, emotional, and social changes that occur during the first two years of life, forming the foundation for later development and functioning.
Example: The progression from reflexive behaviors to purposeful movement, from crying to language, and from basic attachment to social interaction skills during infancy.
Share This Psychology Term
Found this helpful? Share this psychology definition with others:
Explore Your Personality with Science-Backed Tests
Discover insights about yourself with our comprehensive personality assessments. Each test is designed to help you understand different aspects of your psychological profile and personal traits.