Student academic ability varied across quarters but not systematically with changes in course structure¶

Claim · All claims
Evidence · 1 study · causal r2 · q3
Currency · newest study 2011 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? ANOVA showed significant heterogeneity in Predicted Grades across quarters (F = 13.2, df = 5, 2351, p ≪ 0.001), with pairwise differences crossing levels of course structure. → Freeman Scott 2011

Evidence¶

Freeman Scott 2011¶

Freeman Scott, Haak David, Wenderoth Mary Pat. (2011). Increased Course Structure Improves Performance in Introductory Biology. CBE—Life Sciences Education. https://doi.org/10.1187/cbe.10-08-0105

q3 · i? · causal · r2

ANOVA comparing average student Predicted Grade (from a regression on UW GPA and SAT-verbal scores) across the six quarters. Mean predicted grades ranged from 2.46 to 2.85; the pairwise differences crossed structure levels, so ability did not vary systematically with structure.

"An ANOVA indicates significant heterogeneity in Predicted Grades across quarters (Table 6; F = 13.2, df = 5, 2351, p ≪ 0.001). Post-hoc Tukey's Honestly Significant Difference tests demonstrate that this heterogeneity was distributed across quarters in the study: Of the 15 pairwise tests, only six were not significantly different, and these crossed levels of course structure."

Discussion¶

Related Claims¶

• Raw failure rates in the introductory biology course declined from 18.2% to 6.3% as course structure increased across quarters — related
• High course structure significantly reduces failure rates in introductory biology independent of student ability, while moderate structure has a marginal effect — related
• The six clusters differ substantially in academic performance: Final Grade ANOVA η² = 0.770, with C0 exceeding C1 by 40.17 exam-score points — related
• Drop rates did not vary with course structure except for an increase in the final high-enrollment quarter — related