Most students reported using the Wordcloud for group discussion, and Wordcloud use showed a marginally non-significant advantage on content comprehension but no difference on vocabulary gain¶

Claim · All claims
Evidence · 1 study (2 entries) · design r2 · q2
Currency · newest study 2025 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Over 85% of 39 students reported individual and group use of the Wordcloud for discussions and found it helpful. → Liang 2025 q2 i? The Used group outperformed the Non-used group on the content comprehension test, but the difference was marginally non-significant (U = 124.000, p = .093); vocabulary learning gain showed no significant difference (t = .307, p = .761). → Liang 2025 (2)

Evidence¶

Liang 2025¶

Liang, C., Toyokawa, Y., & Ogata, H. (2025). Optimizing group formation with a mixed genetic algorithm: an empirical study in active reading using marker data. Intern. J. Comput.-Support. Collab. Learn. https://doi.org/10.1007/s11412-025-09452-9

q2 · i? · design · r2

Four-item questionnaire (adapted from Strauß & Rummel, 2021; Cronbach's alpha 0.773) administered to the experimental condition. Most students reported using the Wordcloud; seven dissenting students were classified as the Non-used group.

"Over 85% of 39 students reported that both individuals and groups utilized Wordcloud for group discussions and found it helpful. Seven students indicated disagreement with at least one of the first three questions on Wordcloud usage."

Liang 2025 (2)¶

Liang, C., Toyokawa, Y., & Ogata, H. (2025). Optimizing group formation with a mixed genetic algorithm: an empirical study in active reading using marker data. Intern. J. Comput.-Support. Collab. Learn. https://doi.org/10.1007/s11412-025-09452-9

q2 · i? · design · r2

Independent-sample comparisons between students who reported using the Wordcloud and those who did not. Vocabulary gain showed no significant difference; content comprehension favored the Used group at a marginally non-significant level (p = .093).

"For the vocabulary quiz, there was no significant difference in learning gain between the Used group and the Non-used group (t = .307, p = .761 >. 05). For the content comprehension test, the Mann-Whitney U test revealed a marginally non-significant difference between the two groups, with the Used group outperforming the Non-used group ( U = 124.000, p = .093 >. 05)."

Discussion¶

Related Claims¶

• The mixed-algorithm grouping intervention did not significantly change comprehension test performance despite slightly higher experimental mean
• Group summary scores did not differ significantly between algorithm-formed and randomly formed groups on content, vocabulary, or grammar rubrics
• In a high school EFL active-reading setting, mixed genetic algorithm group formation with Wordcloud awareness produced significantly greater vocabulary learning gains than random grouping — reports the opposite