Critical periods refer to specific time intervals during a child’s development when certain experiences, environmental influences, and interactions have a particularly strong and lasting impact on growth and learning. During these periods, the child’s brain and body are highly sensitive to external stimulation, and appropriate experiences can significantly enhance development. In early childhood, especially from birth to eight years, critical periods play an important role in shaping physical, cognitive, emotional, social, and language development. The early years of life are considered a period of rapid brain development. At birth, a child’s brain contains billions of neurons that form connections through experiences and interactions with the environment. These neural connections develop most actively during the early years, making this phase highly important for learning and skill formation. Adequate nutrition, responsive caregiving, emotional security, and opportunities for exploration during these years support healthy brain development. One of the most important critical periods is related to language development. The first few years of life are highly sensitive for acquiring language skills. Infants learn language through listening, imitation, and interaction with