Being as difficult as Japanese seems to me to be, do Japanese infants have trouble learning their parents' language?

 Despite Japanese being perceived as a difficult language by many adults, Japanese infants do not generally have trouble learning their parents' language. Language acquisition in children is a natural process that occurs universally, and Japanese infants learn their native language just as efficiently as children learning any other language. Infants are born with an innate ability to learn language, which allows them to absorb and reproduce the sounds, vocabulary, and grammar of the language spoken around them. Japanese infants, like all infants, are naturally equipped to pick up the language they are exposed to from birth.

Japanese infants are constantly immersed in their native language from birth. They hear Japanese being spoken by their parents, caregivers, and others in their environment. This consistent exposure allows them to learn the language naturally through listening and gradually beginning to speak. By hearing and mimicking the sounds and intonations of their native language, infants develop their linguistic skills over time. This immersion is a critical factor in the natural and efficient language acquisition process.

Infants worldwide go through similar stages of language development, including cooing, babbling, single words, and eventually forming sentences. Japanese infants follow these same stages, learning to understand and produce Japanese sounds, words, and structures through interaction and practice. These developmental stages are universal and not dependent on the complexity of the language being learned. Therefore, Japanese infants progress through these stages just as children learning any other language do.

In Japan, cultural practices and parental behaviors support language development. Parents and caregivers often use child-directed speech, characterized by a higher pitch and exaggerated intonation, which helps infants learn. Additionally, activities such as reading picture books, singing songs, and engaging in conversation further aid language acquisition. These cultural and environmental supports provide a rich linguistic environment that facilitates the natural learning process for Japanese infants, ensuring they acquire their native language effectively and naturally.