Claims

The experimental and control groups were homogeneous in grammar knowledge before the intervention

Claim · All claims
Evidence · 1 study · causal r2 · q3
Currency · newest study 2018 · checked against its sources 2026-11-01 (automated, 1 of 1 entry) · 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.

q3 i? An independent samples t-test on pre-test scores showed no significant difference between the control and experimental groups (t = .177, p = .860). → Alian 2018

Evidence

Alian 2018

Alian, J., Khodabandeh, F., & Soleimani, H. (2018). The effect of CALL-based tasks on EFL learners’ grammar learning. Teaching English with Technology, 18(3), 54-68. http://www.tewtjournal.org

q3 · i? · causal · r2

Pre-test analysis of the 60 selected learners (30 per group, selected from 140 as within one SD of the mean of 32.18, SD 2.12): group means were 8.17 and 8.20, and the t-test showed "no significant difference in grammar knowledge".

"the p-value was more than .05(.860), and the t-observed .177 was less than the t-critical, 2.04. Therefore, the participants were homogeneous and there was no significant difference in grammar knowledge between the control and the experimental groups on the pretest"

Discussion

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