The control group showed no significant vocabulary size change from pre-test to post-test¶

Claim · All claims
Evidence · 1 study · causal r1 · q2
Currency · newest study 2017 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? The control group's pre-test and post-test vocabulary sizes did not differ significantly; equivalence was not tested. → Altay 2017

Evidence¶

Altay 2017¶

Mehmet ALTAY. (2017). Raising Awareness of Lexical Semantic Relations in Undergraduate EFL Context. Novitas-ROYAL (Research on Youth and Language), 11(1), 42-52. https://eric.ed.gov/?id=EJ1167230

q2 · i? · causal · r1

Paired Samples t-Test on the control group's pre-test (mean 5525.000) and post-test (mean 5910.000) Vocabulary Size Test scores, reported in Table 11. The article reports no significant difference; the mean change was approximately 400 points, about 2 correct answers.

"there is not a significant difference between the vocabulary sizes of the control group at the time of the pre-test and post-test (t19 = -1,430, p ≥ ,05)"

Discussion¶

Related Claims¶

• Sixth-grade students in a Puerto Rican public school who played My English Coach in class showed significant pre-post growth in English receptive vocabulary, but so did a same-school control class that did not play it, while an external control group did not — related
• Experimental and control groups were equivalent in vocabulary before the glossing treatment — related
• The treatment group's vocabulary size increased significantly from pre-test to post-test, by about 17 correct answers — related