This document discusses babyhood, which refers to the first 2 years of life after infancy. It outlines the key characteristics of babyhood, including rapid growth and development, decreasing dependency, increased individuality, and the beginning of socialization. The document also details the major developmental tasks in babyhood, such as physical, psychological, social, and language development. Additionally, it examines the play patterns of babies and potential hazards during the babyhood years, including physical, psychological, social, and family relationship risks.