The Polish Vocabulary Size Test demonstrates significant differences in receptive vocabulary among native and non-native Polish speakers, indicating its effectiveness.
We present the Polish Vocabulary Size Test (PVST), a novel tool for assessing the receptive vocabulary size of both native and non-native Polish speakers. Based on item response theory and computerized adaptive testing, PVST dynamically adjusts to each test-taker’s proficiency level, ensuring high accuracy while keeping the test duration short. To validate the test, a pilot study was conducted with 1475 participants. Native Polish speakers demonstrated significantly larger vocabularies (mean = 75,125 words; range = 19,556–122,693) compared to non-native speakers (mean = 7165 words; range = 646–23,394). For native speakers, vocabulary size showed a strong positive correlation with age (r = .496, p < .001). The PVST is available online at myvocab.info/pl .
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Fokin et al. (2025) studied this question.
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