Rethinking Early Language Learning: New Book Challenges Common Assumptions

The belief that starting early is the key to successful language learning has long shaped approaches to second-language education. But according to Alice Joo, lecturer in Korean Studies at the University of New South Wales (UNSW), this widely accepted view reflects only part of how language acquisition actually works.
 

[Courtesy of Alice Joo]

In her new book The Perfect Bilingual, Joo examines one of the most influential ideas in language education — the “critical period.” While children are generally more likely to develop native-like pronunciation and intonation, she argues that interpreting this as proof that it is “too late” to learn a language after childhood is an oversimplification.
 
“Language is not an ability that forms automatically at a certain stage of life,” Joo explains. “Rather, it develops through a process shaped by understanding, environment, and repeated use.”
 
The book highlights that language acquisition is not limited to a fixed developmental window. In second-language learning, conscious study and more implicit forms of acquisition can operate together, allowing adults — under the right conditions — to achieve meaningful progress.
 
Joo also challenges the idea that age alone determines success. Instead, she points to a combination of factors, including cognitive ability, motivation, linguistic environment, and opportunities for real-world language use. From this perspective, while younger learners may have certain advantages, starting early does not guarantee successful outcomes.
 

The book further notes that early exposure alone is not sufficient. Without meaningful context and sustained interaction, children may not develop strong proficiency in either language. This suggests that language learning depends not simply on timing, but on the quality and depth of engagement.
 
Ultimately, Joo argues that the central question in language education should not be when to start, but how to approach learning. By shifting the focus toward meaningful use and long-term engagement, she invites readers to reconsider long-held assumptions about how languages are acquired.
  

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