The audio-visual and audio-only groups were homogeneous in general L2 proficiency before treatment¶

Claim · All claims
Evidence · 1 study · causal r1 · q3
Currency · newest study 2016 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? PET scores did not differ significantly between groups (AV M=54.80, A M=54.35; t-test significance .615), so the groups were homogeneous in L2 proficiency. → Pooya Drood & Hanieh Davatgari Asl 2016

Evidence¶

Pooya Drood & Hanieh Davatgari Asl 2016¶

Pooya Drood & Hanieh Davatgari Asl. (2016). The Effects of Audio-visual Recorded and Audio Recorded Listening Tasks on the Accuracy of Iranian EFL Learners' Oral Production. English Language Teaching, 9(9). https://doi.org/10.5539/elt.v9n9p110

q3 · i? · causal · r1

Independent samples t-test on PET scores of 20 learners per group, selected from 70 intermediate students scoring 50-60 out of 65; Levene's test (.263) verified equality of variances. The article concludes the groups are homogeneous.

"The mean score of the PET test in A V group is (54.80), and in A group is (54.35). Significance of the t-test was calculated, (.615)."

Discussion¶

Related Claims¶

• Audio-visual listening tasks produce higher oral accuracy than audio-only listening tasks for intermediate Iranian EFL learners — related
• The four groups were homogeneous in general English proficiency before treatment (placement-test ANOVA sig .881) — related
• Before treatment, the experimental and control groups showed no significant difference in overall language proficiency — related