Task 2 Fınal Draft Berna Sarıtaş

WHAT IS THE OPTIMAL AGE FOR LEARNING FOREIGN LANGUAGE?

Learning a foreign language has become increasingly important in today’s globalized

world. It enables individuals to communicate with people from different cultures and

countries while also enhancing educational and career opportunities. In addition,

language learning contributes to cognitive development and increases cultural

awareness. For these reasons, acquiring a foreign language is considered a valuable

skill for both personal and professional growth. However, an important question

remains: What is the optimal age to begin learning a foreign language? This issue has

long been debated, and various theories have been proposed. While some scholars

argue that early language acquisition is easier and more effective, others claim that

successful language learning depends on several factors such as motivation, exposure,

and learning conditions. This argues that although multiple factors influence foreign

language learning, early childhood is the optimal period due to greater brain plasticity,

lower affective barriers, and more natural language acquisition.

Many theories suggest that children acquire languages more easily than adults due to

biological factors. One key explanation is children’s neurological advantage: their brains

are more flexible and malleable, which allows them to absorb new sounds and

vocabulary more efficiently. Children tend to learn languages unconsciously, acquiring

grammatical structures naturally without explicit instruction. As Lenneberg (1967)

explains, “Language learning is a biologically constrained process which is most

effective during a limited developmental period.” This idea forms the basis of the Critical

Period Hypothesis, which argues that language acquisition is most successful during

the pre-adolescent years. During this period, pronunciation and accent develop more

naturally, whereas achieving near-native proficiency becomes increasingly difficult after

puberty.

Emotional factors also play a crucial role in language learning. According to Krashen’s

Affective Filter Hypothesis, children generally learn languages more easily because they

experience lower levels of anxiety. Krashen (1982) states that “a low affective filter

allows comprehensible input to reach the language acquisition device.” Since children

are less afraid of making mistakes, they are more open to linguistic input and

interaction. In contrast, adult learners often experience stress, fear of error, or self-

consciousness, which can negatively affect their learning process. Similarly, Selinker’s

concept of fossilization suggests that adult learners are more likely to develop persistent

language errors. Selinker (1972) defines fossilization as “the permanent cessation of

second language development in non-native speakers.” This explains why certain

grammatical or pronunciation errors may become difficult to eliminate in adulthood.

Empirical research strongly supports the advantages of early language learning. One

influential study by Johnson and Newport (1989) examined the English proficiency of

immigrants who arrived in the United States at different ages. The researchers found that

“subjects who arrived in the United States before the age of seven performed similarly to

native speakers, while performance declined steadily with increasing age of arrival.”

These findings demonstrate that early exposure to a foreign language leads to higher

levels of grammatical accuracy and fluency. Furthermore, modern brain imaging studies

indicate that languages learned early in life are processed in brain regions similar to

those used for the native language, whereas languages learned later rely more heavily on

conscious processing areas.

In conclusion, age plays a crucial role in foreign language acquisition. Researchs clearly

demonstrate that learning a foreign language at an early age is generally easier and more

effective than learning it later in life. Theories such as Lenneberg’s Critical Period

Hypothesis, Krashen’s Affective Filter Hypothesis, and Selinker’s fossilization concept,

along with empirical findings from Johnson and Newport, highlight the advantages of

early exposure, particularly in terms of pronunciation and fluency. Although learning a

language in adulthood is still possible and can be successful, it often requires greater

conscious effort. Therefore, encouraging early foreign language education can help

learners reach their full linguistic potential.

References

Johnson, J. S., & Newport, E. L. (1989). Critical period effects in second language

learning: The influence of maturational state on the acquisition of English as a second

language. Cognitive Psychology, 21(1), 60–99.

Krashen, S. D. (1982). Principles and practice in second language acquisition. Pergamon

Press.

Lenneberg, E. H. (1967). Biological foundations of language. Wiley.

Selinker, L. (1972). Interlanguage. International Review of Applied Linguistics in

Language Teaching, 10(3), 209–