The treatment did not level out inter-subject differences and made the treatment group more diverse in second conditional performance¶

Claim · All claims
Evidence · 1 study · causal r1 · q2
Currency · newest study 2012 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Standard deviations in both groups were higher on the posttests than on the pretest, and the treatment aggravated inter-subject variation. → Kruk 2012

Evidence¶

Kruk 2012¶

Mariusz Kruk. (2012). The Use of Internet Resources and Browser-Based Virtual Worlds in Teaching Grammar. Teaching English with Technology, 14(2), 52-67. http://www.tewtjournal.org

q2 · i? · causal · r1

Descriptive analysis of Table 1 standard deviations across the four test occasions for both groups. The article states the treatment "did little to level out the differences" between subjects, although no treatment increased them further.

"standard deviations in both groups were higher on the posttests than on the pretest. However, the control group stood out against the treatment group , whose standard deviation was the highest on delayed posttest 2"

Discussion¶

Related Claims¶

• Form-focused instruction reduced individual variation in performance, with standard deviations in both experimental groups dropping markedly more than in the control group — reports the opposite
• Differentiated instruction reduced the experimental group's score standard deviation (6.30 to 4.73) while the control group's stayed nearly unchanged (6.44 to 6.47) — related
• Internet-based instruction with a browser-based virtual world produced a large, statistically significant advantage over the control group on the immediate posttest of the second conditional — related