Overall, the experimental group's posttest average was significantly higher than the control group's despite both groups declining from pretest to posttest.¶
Claim · All claims
Evidence · 1 study · causalr1·q2
Currency · newest study 2015 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q2 i? Across all 48 learners, the experimental group's posttest average exceeded the control group's, a statistically significant difference, even though both groups scored lower on the posttest than the pretest. → Shi 2015
Evidence¶
Shi 2015¶
Jing Shi. (2015). An Analysis of the Application of Wikipedia Corpus on the Lexical Learning in the Second Language Acquisition. English Language Teaching, 8(8). http://dx.doi.org/10.5539/elt.v8n8p171
q2 · i? · causal · r1
Analysis of pretest and posttest scores from the 48-participant quasi-experiment shows the experimental group's posttest average (13.1) exceeded the control group's (12.9), and the author reports "the difference is statistically significant." No effect size is printed.
"The raw data reveals that both the experimental group and the control group did worse in the posttest than the pretest but the average score of the experimental group’s posttest is higher than that of the control groups’ and the difference is statistically significant."
Discussion¶
Related Claims¶
- Low-level (Level III) learners performed significantly better under conventional lexical instruction than under corpus-based instruction with the Wikipedia Corpus. — related
- Corpus-based lexical instruction using the Wikipedia Corpus produced significantly higher lexical gains than conventional instruction for medium-level (Level II) learners. — related
- CPS sections showed larger pre-posttest gains than the control group despite lower pretest preparedness — related
- Across all four measured HOTS skills, the experimental group's posttest means exceeded the control group's, and pretest-posttest values were significantly linear — related
- The experimental group's average achievement enhancement (28.14 points) exceeded the control group's (19.27 points) despite a lower pre-test mean — related
- Both groups improved significantly from pretest to posttest, and the experimental group's posttest scores significantly exceeded the control group's — related
- Both groups improved from pretest to posttest, with most experimental students passing the KKM threshold of 60 — related
- For advanced (Level I) learners, conventional instruction was slightly more suitable than corpus-based instruction, though the difference was not statistically significant. — related
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