# TalkToDia — full blog corpus (locale: ig)

> Full-text export of every published TalkToDia blog post in the ig
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> Companion endpoints:
> - https://talktodia.com/llms.txt              — site overview (English, short)
> - https://talktodia.com/llms-full.txt         — full English corpus
> - https://talktodia.com/papers.json           — machine-readable claim → source index
> - https://talktodia.com/feed.json             — JSON Feed v1.1
> - https://talktodia.com/sitemap.xml           — canonical sitemap (35 locales × all paths)
> - https://talktodia.com/.well-known/ai-policy.txt — AI training & citation policy
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> Generated: 2026-05-11
> Posts included: 1

# Ndị okenye nwere ike ịtọcha asụsụ: akụkọ ifo "oge dị mkpa"

URL: https://talktodia.com/ig/blog/adults-can-learn-languages-fluently
Canonical English: https://talktodia.com/en/blog/adults-can-learn-languages-fluently
Locale: ig (machine-translated, awaiting native review)
Published: 2026-05-10
Updated: 2026-05-10
Authors: TalkToDia Research
Tags: neuroscience, research, beginners
Available translations: en, fr, de, zh, ko, es, pt, ja, th, ru, fi, it, no, sv, hi, da, uk, ar, he, ms, ta, ml, ig, sw, nl, kk, fa, cs, pl, hu, mn, tl, tr, id, uz
Keywords: adult language learning, critical period hypothesis, too old to learn a language, adult brain plasticity, second language acquisition adults, hartshorne tenenbaum pinker, mit language study, late l2 immersion, hippocampus language learning, neuroplasticity bilingual, is it too late to learn a language, best age to learn a language

## Summary

Nnyocha MIT n'ahụ ndị 670,000 kwaturu akụkọ ifo "oge agafeela". Ụbụrụ onye okenye ka na-agbanwe — ihe na-akọ abụghị bayoloji, kama mmega ahụ.

## Key facts

- Ikike ịmụta ụtọasụsụ na-anọgide kwụsie ike ruo ihe dịka afọ 17.4, ọ bụghị afọ 7.
- Ndị okenye na-akarị ụmụaka mgbe ụfọdụ na okwu na ọgụgụ.
- Mmikpu n'asụsụ nke abụọ n'oge ka okenye na-eme ka ihe ọcha ụbụrụ na hippocampus na-akawanye.
- "Oge dị mkpa" n'ezie bụ nrụgide ọha mmadụ, ọ bụghị bayoloji ụbụrụ.

## Headline (English canonical)

Adults Can Reach Fluency: The Critical Period Hypothesis Is a Myth

## Sources

- Hartshorne, Tenenbaum & Pinker (2018) — A critical period for second language acquisition (Hartshorne, J. K., Tenenbaum, J. B., & Pinker, S., 2018) — https://www.sciencedirect.com/science/article/pii/S0010027718300994  [doi:10.1016/j.cognition.2018.04.007]
- Pliatsikas et al. (2017) — White matter changes from late L2 immersion (Pliatsikas, C., et al., 2017) — https://doi.org/10.1162/jocn_a_01084  [doi:10.1162/jocn_a_01084]
- Mårtensson et al. (2012) — Growth of language-related brain areas after foreign language learning (Mårtensson, J., et al., 2012) — https://doi.org/10.1016/j.neuroimage.2012.06.043  [doi:10.1016/j.neuroimage.2012.06.043]

## Body

## Akụkọ ụgha ahụ: "Ọ bụla mgbe oge uto gafere"

Ị nụla ya. Ma eleghị anya site n'aka onye nkuzi, ma eleghị anya site n'ọnụ gị onwe gị n'enyo mgbe njem ebe ị kpọnwụrụ akpọnwụ. E nwere ụdị akụkọ ndị mmadụ na-akọ banyere "oge dị mkpa" nke na-ekwu na ụbụrụ onye toro eto emechibidola ụzọ asụsụ n'ụzọ anụ ahụ ma igodo efuola. Akụkọ ahụ emeela ka ọtụtụ nde ndị toro eto nwere ike hapụ echiche banyere ịsụ asụsụ ọfụma.

Ụdị nyocha a kpachapụrụ anya bụ ihe na-atọ ụtọ karịa. Nnyocha 2018 nke MIT/Boston College nke Hartshorne, Tenenbaum, na Pinker mere — nke bụ nnukwu data e nwetụbeghị banyere ịmụta asụsụ, **ndị na-asụ Bekee amụrụ n'ọnụ na ndị na-abụghị ndị amụrụ n'ọnụ 669,498** — chọpụtara na ikike ịmụta ụtọ asụsụ na-anọgide na-adị ike ruo ihe dị ka **afọ 17.4** tupu ọ malite ịda. Ndị malitere n'oge na-adịghị anya nwere ike ịga n'ihu na-enweta ọganihu ruo ọtụtụ afọ. Otu nnyocha ahụ chọpụtakwara na ndị mmụta malitere mgbe ha ruru ihe dị ka afọ 10–12 adịghị adịkarị eru ọkwa ndị amụrụ n'ọnụ n'ụtọ asụsụ. Ya mere: ụzọ emeghere; ọ bụ naanị nzọụkwụ ikpeazụ (ịda ka onye tolitere n'asụsụ ahụ) bụ akụkụ na-esiri ike. Ọdịiche ahụ dị mkpa, ma ihe fọdụrụ n'ozi a bụ ihe ọ pụtara maka gị.

## Ihe mere akụkọ ụgha ahụ ji na-agbasa

Ụmụaka na-adị ka ha na-amụta asụsụ "n'enweghị nsogbu" n'ihi na:

- Ha na-enweta **ọtụtụ puku kwuru puku awa nke ntinye** tupu ha eruo afọ 10 (onye toro eto na-amụ site n'imikpu na-enweta obere akụkụ nke nke ahụ)
- Ha **enweghị ọnụ ahịa ego** maka ikwu okwu n'ụzọ na-ezughị okè
- Ha nwere **gburugburu a haziri ahazi** (ụlọ akwụkwọ, ezinụlọ, ndị ọgbọ) nke ndị toro eto adịghị adaba
- A na-atụle ọganihu ha site n'iji ya tụnyere ụmụaka ndị ọzọ, ọ bụghị ndị toro eto na-asụ asụsụ ọfụma

Mgbe ị na-achịkwa ihe ndị ahụ dị iche iche, ndị toro eto na-anọkarị n'ọnọdụ ha ma mgbe ụfọdụ na-eme nke ọma karịa ụmụaka n'okwu, ụtọ asụsụ a kọwara nke ọma, na ịgụ ihe (lee Snow & Hoefnagel-Höhle 1978 maka ọmụmụ ochie; DeKeyser 2000 maka nkọwa banyere ụda olu na morphology inflectional).

## Ihe na-agbanwe n'ụbụrụ onye toro eto

Ụbụrụ ndị toro eto na-agbanwe n'ụzọ a na-apụta ìhè mgbe ị na-amụta asụsụ. Plasticity ahụ efuola:

- **Oke hippocampal** na-abawanye n'etiti ndị toro eto na-amụta asụsụ ọhụrụ n'okpuru ọnọdụ siri ike (Mårtensson et al. 2012, ọmụmụ ndị ntụgharị asụsụ ndị agha Sweden; obere nlele, nke Stein et al. 2012 mekwara n'akụkụ).
- **Ịdị mma nke ihe ọcha** na inferior longitudinal fasciculus na-enwekwu mma site na mmikpu L2 n'oge na-adịghị anya (Pliatsikas et al. 2017).
- **Mpaghara motor-cortex na nke ịnụ ihe** metụtara okwu na-egosi mgbanwe a na-apụta ìhè site n'ịmụta ụda ọhụrụ (Golestani et al. 2007).

Plasticity ahụ dị. Ihe na-agbanwe mgbe nwata gasịrị abụghị ikike ụbụrụ ịgbanwe; ọ bụ nrụgide mmekọrịta mmadụ na ibe ya nke na-echebe mgbanwe ahụ. Nke ahụ bụ ezigbo "oge dị mkpa" ọtụtụ ndị toro eto na-eru ụjụ.

## Ihe nke a pụtara maka gị

Ọ bụrụ na a gwala gị na ị "merela agadi," ma ọ bụ — karịa nke ahụ — ị na-agwa onwe gị nke a nwayọọ, ọ bụghị eziokwu. Ihe ị chọrọ abụghị iri afọ ọzọ nke mmega ahụ ụtọ asụsụ. Ọ bụ **omume ikwu okwu mgbe niile nke na-eṅomi, n'obere, ihe ụmụaka na-enweta n'efu**: mmega mkparịta ụka na-adịghị mkpa ebe ọnụ ahịa okwu na-ezighị ezi bụ efu. Nkeji iri abụọ kwa ụbọchị ruo iri ụbọchị itoolu ga-ebuga gị n'ihu karịa ihe afọ anọ nke ihe ọ bụla ụlọ akwụkwọ sekọndrị mere. Nke ahụ bụ ụkpụrụ nhazi dị n'azụ TalkToDia.

Ị gaghị ada ka ị tolitere ebe ahụ. Data Hartshorne na-ekwu eziokwu banyere nke ahụ: sentimita ikpeazụ nke ụtọ asụsụ dị ka nke ndị amụrụ n'ọnụ bụ n'ezie ihe siri ike mgbe oge uto gasịrị. Ihe ị nwere ike iru n'ụzọ zuru ezu bụ **ịsụ asụsụ ọfụma, inwe mmasị, na ịghọta nke ọma** — ụdị ịsụ asụsụ ọfụma nke na-enye gị ohere ibi ná mba ọzọ ma ọ bụ hụ n'anya gafee ókèala. Ihe ahụ ị chọrọ n'ezie, oge niile, anọghị n'akụkụ ọjọọ nke mgbidi anụ ahụ ọ bụla.

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