Despite the prevalence of digital advertisements promising foreign language fluency within a month, researchers at Lancaster University have highlighted that while the human brain is adept at identifying linguistic patterns, achieving true mastery remains a long-term commitment.
In a study conducted at the university’s Language Learning Lab, Krupa Padhy, a journalist with the British Broadcasting Corporation (BBC), participated in a dual-language challenge involving Portuguese and Mandarin.
The experiment was overseen by Patrick Rebuschat, a professor of linguistics and cognitive science, and Padraic Monaghan, a professor of cognition, to investigate how the brain processes unfamiliar speech in “immersion” environments.
The role of statistical learning
The research focused on cross-situational learning (CSL), an innate human faculty that allows individuals to use statistical frequencies to decode the meaning of words and grammatical structures. Professor Rebuschat explained that this ability is used from infancy to recognise regularities in sounds and events.
The trial, which lasted six days with 30-minute daily sessions, required Padhy to match sounds to visual scenes without prior instruction. In the Portuguese segment, her accuracy reached 90–100% by the third day, a success attributed to her existing knowledge of French, Spanish, and Gujarati.
Mandarin and ‘Pseudowords’ The Mandarin portion of the study utilised “pseudowords” – artificial terms and objects – to ensure the participant could not rely on previous linguistic experience.
While Padhy achieved an 80% accuracy rate in recognising these sounds, her “production” score – the ability to correctly vocalise the specific Mandarin tones – peaked at 55%.
Professor Monaghan noted that while common words make up approximately 70% of a language, the remaining 30% consists of “rarer words” that native speakers use, which are significantly harder to master quickly.
Technology versus tradition
The study also addressed modern “microlearning” techniques, which break information into small segments to counteract the “forgetting curve”. While technologies such as Virtual Reality (VR) and chatbots offer new avenues for practice, experts argue they cannot yet replace the cultural nuance provided by human instruction.
“Achieving fluency in the real world requires sustained exposure, interaction, feedback, and social use over many months or years,” Professor Rebuschat stated.
He pointed to the US Defense Language Institute’s Foreign Language Center, noting that it typically takes 64 weeks of intensive study – seven hours a day – to reach basic professional proficiency in complex languages like Japanese or Persian.
Ultimately, the researchers concluded that successful acquisition depends on a combination of memory capacity, an “ear” for rhythm, and the ability to detect recurring patterns through human-to-human interaction.
