What period of development encompasses ages from birth to 1 year?

The period of development that encompasses ages from birth to 1 year is known as infancy. During this stage, infants undergo rapid physical and cognitive development, including substantial growth in height and weight, as well as the development of basic skills such as reaching, crawling, and forming attachments with caregivers. This is a crucial time for sensory and motor development, as infants start to explore their environment and interact with the world around them.

Childhood typically refers to a broader range of ages, extending beyond the first year of life and encompassing early school years. Adolescence follows childhood and is marked by significant physical, emotional, and social changes occurring from approximately 12 to 18 years of age. Adulthood represents the stage of life after adolescence, characterized by maturity, responsibility, and often the establishment of a career and family. Therefore, infancy is specifically focused on the foundational developmental milestones that occur in the first year of life.