Profiling English sentences based on CEFR levels
The study aims to demonstrate the procedure for constructing the CEFR-based Sentence Profile (CEFR-SP), a dataset
with the CEFR levels assigned for sentences, and to identify the characteristics at each level. Basic statistics such as word
length and sentence length are presented for each CEFR level for 7,511 carefully selected sentences, and statistical tests are
conducted between adjacent levels to identify criterial features. The findings reveal significant differences in word length
between adjacent levels, while word difficulty is not significant in discriminating levels at either end (A1–A2, C1–C2). Sentence
length and depth are also not significant discriminators for higher levels (B2–C1, C1–C2). Notably, sentence-level data generally
exhibit discriminative values compared to text-level statistics, indicating their direct capture of characteristics at each CEFR
level.
Article outline
- Introduction
- Aim and research questions
- Related work
- Building a sentence-based corpus
- Annotation procedure
- Pilot study for sentence level annotation
- Annotator selection
- Sentence selection
- Annotation results
- Methodology
- Results
- Basic statistics
- Comparison between sentence-level and text-level datasets
- Keywords
- Typical and atypical sentences
- Discussion
- Conclusions
- Acknowledgements
- Notes
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References