The two groups did not differ significantly in vocabulary knowledge before the intervention¶

Claim · All claims
Evidence · 1 study · causal r1 · q2
Currency · newest study 2017 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2020: local conditions change quickly

Subclaims¶

q2 i? A pretest independent samples t-test showed no significant difference between the experimental and control groups prior to treatment; equivalence was not framed as tested beyond this check. → Fateme Shir Mohammadi 2017

Evidence¶

Fateme Shir Mohammadi 2017¶

Fateme Shir Mohammadi. (2017). The Effect of Authentic Problem-Based Vocabulary Tasks on Vocabulary Learning of EFL Learners. International Journal of Education & Literacy Studies, 5(3). https://eric.ed.gov/?id=EJ1154085

q2 · i? · causal · r1

Pretest check before the main study: experimental mean (M= 16.66, SD= 1.44 as printed in Table 2) versus control mean (M= 16.68, SD= 1.46); the difference between the groups was "not significant".

"the results of independent samples t-test (t (45)= - 0.35, Sig=.972) indicated that the difference between the groups is not significant"

Discussion¶

Related Claims¶

• The two groups did not differ significantly in idiom knowledge at pretest — related
• Experimental and control groups were equivalent in vocabulary before the glossing treatment — related
• Before intervention, treatment and control kindergartners did not differ on age, demographics, vocabulary, phoneme segmentation, letter knowledge, or reading — related
• Before treatment, the experimental and control groups showed no significant difference in overall language proficiency — related
• CAVI and TVI groups were equivalent in target vocabulary knowledge before the experiment — possibly the same claim (merge candidate)