Claims

Meaning-focused listening input significantly enhances productive vocabulary size of Iranian intermediate EFL learners compared with traditional instruction

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q3
Currency · newest study 2017 · 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.

q3 i? After 12 treatment sessions, the experimental group receiving vocabulary through meaning-focused listening input outperformed the control group on Lex30 productive vocabulary size (p=0.00<0.05, T(61)= -16.90). → Noughabi 2017 q3 i? The two randomly assigned groups were equivalent at pretest on Lex30 productive vocabulary size (T(61)= -0.343, p= 0.73>0.05). → Noughabi 2017 (2)

Evidence

Noughabi 2017

Mostafa Azari Noughabi. (2017). The Effect of Meaning-focused Listening Input on Iranian Intermediate EFL Learners' Productive Vocabulary Size. Journal of Education and Practice, 8(15). https://eric.ed.gov/?id=EJ1143810

q3 · i? · causal · r2

Independent samples t-test comparing posttest Lex30 scores of the experimental group (meaning-focused listening input) and control group (traditional instruction) after 12 treatment sessions in a randomized pretest-treatment-posttest design. The article reports "significant differences were found between posttest scores"; no effect size is printed.

"As Table 5 shows, with regard to productive vocabulary size, significant differences were found between posttest scores of the control group and ex perimental group; p=0.00<0.05, T(61)= -16.90."

Noughabi 2017 (2)

Mostafa Azari Noughabi. (2017). The Effect of Meaning-focused Listening Input on Iranian Intermediate EFL Learners' Productive Vocabulary Size. Journal of Education and Practice, 8(15). https://eric.ed.gov/?id=EJ1143810

q3 · i? · causal · r2

Pretest equivalence check in the same randomized experiment: control mean 30.38 (SD=1.94), experimental mean 30.56 (SD=2.10); the t-test showed "no significant difference betwe en the performance" of the groups at pretest.

"As Table 3 suggest, no significant difference betwe en the performance of control group and experimental group in Lex30 at pretest phase of the study is seen; T(61)= -0.343, p= 0.73>0.05."

Discussion

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