The treatment's benefits on the second conditional were maintained on delayed posttests four and eight weeks after instruction¶
Claim · All claims
Evidence · 1 study · causalr1·q2·i3large
Currency · newest study 2012 · 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 i3 The between-group gap widened to 12.85 points (45.89%) on delayed posttest 1 and shrank only slightly to 10.71 points (38.25%) on delayed posttest 2, both highly statistically significant with large effect sizes. → Kruk 2012
Evidence¶
Kruk 2012¶
Mariusz Kruk. (2012). The Use of Internet Resources and Browser-Based Virtual Worlds in Teaching Grammar. Teaching English with Technology, 14(2), 52-67. http://www.tewtjournal.org
q2 · i3 · causal · r1
Delayed posttests administered four and eight weeks after the immediate posttest in the same two-group pretest-posttest study. The article reports t(25) = -5.164, p < .001, η2 = 0.516 on DPostT1 and t(25) = -3.632, p < .001, η2 = 0.345 on DPostT2.
"the gap between the groups actually widened to 12.85 points (45.89%) on the delayed posttest 1 (DPostT1) and only shrank a little bit on the delayed posttest 2 (DPostT2) (10. 71or 38.25%)"
Discussion¶
Related Claims¶
- 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
- On a paired focused communication task measuring implicit knowledge, the FCT group significantly outperformed both the control group and the CPA group at delayed posttest — related
- All four written CF types, including metalinguistic code CF, outperformed the control group on the delayed posttest of implicit L2 knowledge. — related
- Form-focused instruction, whether via focused communication tasks or contextualized practice activities, significantly improves learners' explicit knowledge of past unreal conditionals relative to a control group, with gains durable for ten weeks — related
- Internet-based instruction with a browser-based virtual world produced a large, statistically significant advantage over the control group on the immediate posttest of the second conditional — related
- Both groups improved greatly from pretest to posttest and maintained performance from posttest to delayed posttest — related
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