Sources of Intelligibility of Distant Languages: An Empirical Study.
Jiří Milička, Anna Marklová, Michal Láznička and 4 others
PMID 40646699WHAT IT FOUND
People can guess meanings of words in unknown languages better than chance.
Success relies on linguistic affinity, cognates, phonological similarity, and word length agreement. Even distant languages like Japanese and Hindi yielded above-chance guesses, proving zero intelligibility is incorrect.
Key findings
01Participants guessed meanings of words in Latvian (80.3%) significantly better than in Hindi (60.9%), Turkish (57.3%), or Japanese (60.0%).
02Four variables consistently predicted correct guesses across all languages: cognate presence, length agreement, edit phonological similarity, and vector phonological similarity.
03Even when controlling for similarity and length, participants performed above chance level, suggesting residual iconicity or systematicity in vocabulary.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The study used written, transliterated words rather than auditory stimuli, so results may not apply to spoken language comprehension. The Turkish verb forms were selected to avoid morphological complexity, which may have artificially lowered success rates for that language. The task format (matching pairs) may have encouraged visual pattern matching (diagonal vs vertical) rather than pure linguistic inference. Participants were highly proficient Czech speakers, mostly native, so results may not generalize to those with lower literacy or different native languages.
Declared interests
The work was funded by Charles University and the European Regional Development Fund. No commercial conflicts were declared.
The easy way to misread this
Do not assume that patients can guess meanings in unknown languages as easily as they guessed Latvian. Success rates dropped significantly for unrelated languages like Turkish (57.3%), and the study used written text, not speech, so auditory comprehension may differ.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →