G-DA instruction improved L2 writing performance: the experimental group outperformed the control group on the posttest¶

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 2018 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? After 12 weeks of G-DA instruction, the experimental group scored significantly higher than the control group on the writing posttest. → Shabani 2018

Evidence¶

Shabani 2018¶

Karim Shabani. (2018). Group Dynamic Assessment of L2 Learners' Writing Abilities. Iranian Journal of Language Teaching Research 6(1), 129-149. https://eric.ed.gov/?id=EJ1165517

q2 · i? · causal · r2

Quasi-experimental comparison of two intact groups of 22 freshmen each, scored with Jacobs et al.'s scale by two raters. The article reports the experimental group "outperformed the control group" with t (42) = -4.63, p = 0.002; no effect size is printed.

"The results suggested that the experimental group (M=13.68, SD=4.11) outperformed the control group (M=9.04, SD=5.25); t (42) = -4.63, p = 0.002."

Discussion¶

Related Claims¶

• The experimental group showed a significant pretest-to-posttest gain in writing scores — related
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