Mixed courses show the largest effect among teaching types (ES = 1.34), and effects decline as group size increases beyond 2–3 members¶

Claim · All claims
Evidence · 1 study · quant-synthesis r2 · q3 · i2 medium
Currency · newest study 2023 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i2 Group sizes of 2–3 persons had the biggest overall effect size (ES = 0.99), and improvement fell to a lower-middle level (ES < 0.5) when group size exceeded 7 people. → Xu 2023

Evidence¶

Xu 2023¶

Xu, E., Wang, W., & Wang, Q. (2023). The effectiveness of collaborative problem solving in promoting students' critical thinking: A meta-analysis based on empirical literature. Humanities and Social Sciences Communications. https://doi.org/10.1057/s41599-023-01508-1

q3 · i2 · quant-synthesis · r2

Subgroup analysis by group size (Table 4): 2–3 persons (17 effect quantities, ES = 0.99), 4–6 (14, ES = 0.71), 7–10 (7, ES = 0.42), more than 10 (10, ES = 0.48); 31 effect quantities had group size not given.

"The overall effect size of 2 –3 people in this situation was the biggest (ES = 0.99, P < 0.01), and when the group size was greater than 7 people, the improvement in critical thinking was at the lower-middle level (ES < 0.5, P < 0.01)."

Discussion¶

Related Claims¶

• The collective intelligence of groups is higher when members have greater social sensitivity — related
• The pooled effect of self-regulated learning does not differ significantly by course type, though mathematics shows the largest descriptive effect — related