This period is called the critical period or sensitive period for language acquisition because:
* Brain development: The brain undergoes rapid growth and development during this time, making it highly adaptable and receptive to language learning.
* Exposure to language: Children are constantly exposed to language through interactions with caregivers, siblings, and other adults.
* Natural learning: Children acquire language naturally and effortlessly, without explicit instruction.
While language learning can continue beyond this period, it becomes significantly more challenging and less efficient.
Important Note: This doesn't mean that language acquisition is impossible after age 5. It simply means that the brain is more plastic and receptive to language learning during early childhood, and learning a language later requires more effort and dedication.