Explicit form focus instruction with metalinguistic corrective feedback significantly improves adult ESL learners' explicit grammatical knowledge¶

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i3 large
Currency · newest study 2013 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i3 After controlling for pretest scores, the experimental group scored significantly higher than the control group on the combined explicit knowledge tests (UGJT and MKT), with eta square = .78. → Ebadi et al. 2013

Evidence¶

Ebadi et al. 2013¶

Rohollahzadeh Ebadi, M., Mohd Saad, M. R., & Abedalaziz, N. (2013). Explicit Form Focus Instruction: The Effects on Implicit and Explicit Knowledge of ESL Learners. Malaysian Online Journal of Educational Science, 2(4). https://eric.ed.gov/?id=EJ1086281

q3 · i3 · causal · r2

One-way ANCOVA in the same randomized pretest-treatment-posttest experiment, with explicit knowledge measured by UGJT (ungrammatical items) and MKT posttest scores. The printed effect size is eta square = .78, which the article calls a moderate to large effect size.

"after controlling for the effect of the pretest, there is a significant difference between the experimental group and control group in explicit knowledge, (F (1, 88) = 313.00, p =.00, eta square =.78)"

Discussion¶

Related Claims¶

• Experimental-group posttest means exceed control-group means on both implicit and explicit knowledge measures — a broader claim this one bears on
• Explicit form focus instruction with metalinguistic corrective feedback significantly improves adult ESL learners' implicit grammatical knowledge — related
• Prompts were overall more effective than recasts as corrective feedback for L2 grammar learning — related
• Metalinguistic feedback and recasts, but not clarification requests, significantly improve Iranian EFL learners' wh-question performance on an immediate post-test — related
• Corrective feedback on second-language errors has a significant effect on L2 development that is maintained on delayed tests — a broader claim this one bears on
• 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 facilitates L2 grammatical development, with explicit feedback stronger immediately and implicit feedback better maintained over time — a broader claim this one bears on
• Written corrective feedback with an oral metalinguistic tutorial significantly improves Arabic EFL learners' preposition accuracy on an immediate post-test — related