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40 eighth-grade students participated in a quasi-experimental study on vocabulary learning using a Learner-Centered Thesaurus. The dataset includes anonymized vocabulary test scores for receptive and productive knowledge, classroom observation data on interaction patterns, and learner questionnaire responses. Hendrik Maruanaya published this data on figshare in 2026 to support research in EFL pedagogy and educational technology.
Data files are in PDF format, which may require extraction or conversion for analysis. License is CC-BY-4.0, requiring attribution.