The three groups did not differ significantly in vocabulary knowledge at pretest, supporting group homogeneity¶

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 2016 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Pretest means were nearly identical across groups (18.7 control, 18.5 no-subtitle, 18.65 subtitle) with no significant difference. → Sirmandi and Sardareh 2016

Evidence¶

Sirmandi and Sardareh 2016¶

Effat Heidari Sirmandi, Sedigheh Abbasnasab Sardareh. (2016). The Effect of BBC World Clips With and Without Subtitles on Intermediate EFL Learners' Vocabulary Development. Malaysian Online Journal of Educational Sciences. https://eric.ed.gov/?id=EJ1116325

q2 · i? · causal · r2

A one-way ANOVA was run on pretest scores of all three groups (Table 1 means 18.7000, 18.5000, 18.6500); the article states "there is no significant difference between them". Equivalence was not formally tested beyond this; no effect size is printed.

"The results show that all groups are almost the same in terms of their vocabulary knowledge, and there is no significant difference between them."

Discussion¶

Related Claims¶

• Intermediate EFL learners who watched BBC World clips with bimodal English subtitles significantly outperformed the no-subtitle and control groups on a vocabulary posttest — related
• No significant difference in prior vocabulary knowledge between the SMS and paper groups at pretest — related
• Experimental and control groups were equivalent in vocabulary before the glossing treatment — related
• Watching BBC World clips without English subtitles also improved intermediate EFL learners' vocabulary development relative to no treatment — related