Written corrective feedback in general is inconclusive as a predictor of long-term improvement in L2 writing accuracy, with roughly 55% of studies showing positive effects¶

Claim · All claims
Evidence · 1 study · quant-synthesis r1 · q2
Currency · newest study 2020 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Across ten quasi-experimental studies, CF showed a large positive effect size in five studies, no significant effect in two, mixed results in one, and a negative overall effect in one. → Albatool Abalkheel & Tara Brandenburg 2020

Evidence¶

Albatool Abalkheel & Tara Brandenburg 2020¶

Albatool Abalkheel & Tara Brandenburg. (2020). Effects of Written Corrective Feedback: A Synthesis of 10 Quasi-Experimental Studies. English Language Teaching, 13(7). https://doi.org/10.5539/elt.v13n7p97

q2 · i? · quant-synthesis · r1

Meta-analysis of ten quasi-experimental studies of written corrective feedback, using delayed post-test scores converted to Cohen's d. The synthesis reports "in about 55% the cases, CF has a positive effect on students’ long-term learning", with two neutral, one mixed and one negative study.

"With five studies clearly demonstrating a large positive ef fect size, two neutral, one mixed and one negative, it appears that in about 55% the cases, CF has a positive effect on students’ long-term learning."

Discussion¶

Related Claims¶

• Direct versus indirect written corrective feedback proved inconclusive: DCF showed five large positive and two negative effects, ICF results were split — a narrower finding that bears on this claim
• All four written CF types, including metalinguistic code CF, outperformed the control group on the delayed posttest of implicit L2 knowledge. — related
• Writing gains from written corrective feedback decline between post-test and delayed post-test — related
• All four written CF types, including metalinguistic code CF, outperformed the control group on the delayed posttest of explicit L2 knowledge two weeks later. — related
• Corrective feedback on second-language errors has a significant effect on L2 development that is maintained on delayed tests — related
• On the immediate posttest of implicit L2 knowledge, direct CF and metalinguistic CF with rule explanations outperformed the control group while metalinguistic code CF did not. — related
• Corrective feedback facilitates L2 grammatical development, with explicit feedback stronger immediately and implicit feedback better maintained over time — related
• Preposition accuracy gains from written corrective feedback are retained two weeks after treatment — related