The 70-80% ability subset was the only out-of-trend result, with a sudden improvement spike in the Facebook group and uniformly positive course ratings¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r1 · q2
Currency · newest study 2014 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? The Experiment group's 70-80% subset showed a sudden spike, improving 12.78%, almost double the immediately lower subset. → Shams 2014 q2 i? All surveyed students in the Experiment group's 70-80% subset replied that the course was very engaging. → Shams 2014 (2)

Evidence¶

Shams 2014¶

Shaila Shams. (2014). Efficacy of Online Social Networks on Language Teaching: A Bangladeshi Perspective. The IAFOR Journal of Education, Volume II - Issue II - Summer 2014. https://iafor.org/journal

q2 · i? · causal · r1

Subset analysis of the Experiment group's improvement by Start-test band (Figure 4), which otherwise showed an almost linear decrease in improvement as initial aptitude increased. Descriptive percentage only.

"There was however a sudden spike in improvement in this trend for the “70-80%” subset with almost double the improvement from the immediately lower subset (12.78%)"

Shams 2014 (2)¶

Shaila Shams. (2014). Efficacy of Online Social Networks on Language Teaching: A Bangladeshi Perspective. The IAFOR Journal of Education, Volume II - Issue II - Summer 2014. https://iafor.org/journal

q2 · i? · causal · r1

A follow-up query about how students in the Experiment group's 70-80% subset felt about the course; the article reports every respondent gave a positive answer. No survey instrument details are printed.

"100% of the students in this subset (70-80%) replied with a positive answer explaining that the course was very engaging."

Discussion¶

Related Claims¶

• Facebook-supplemented instruction benefited medium-skilled (50-80%) students most, while the highest-ability students improved less than traditionally taught peers — related
• Tertiary EFL students whose instruction was supplemented with Facebook tasks showed almost double the average test improvement of a traditionally taught comparison group over one semester — a broader claim this one bears on