What is the stage of life from birth to 1 year of age?

The stage of life from birth to 1 year of age is referred to as infancy. This developmental period is characterized by rapid physical and cognitive growth, as well as significant changes in social and emotional development. During infancy, babies undergo crucial milestones such as developing motor skills, visual and auditory senses, and forming attachments with caregivers.

Infancy is distinct from other life stages like childhood, which typically refers to the years after infancy (1 year to approximately 12 years of age). Early adulthood usually begins in the late teens to early twenties, while preschool age generally encompasses ages 3 to 5. Each of these stages has its own unique developmental tasks and milestones, making infancy a clearly defined and specific period of growth and development.