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Table 2 Results for comparison between regular and extra credit participation incentive conditions (RQ1.1)

From: Measuring evolution learning: impacts of student participation incentives and test timing

Score

Condition

Plant Loss

Animal Gain

Core Concepts (CC)

Extra Credit (Final exam) vs. Regular credit (Final exam)

B = 0.074,

\(\beta\) = 0.071,

\(\omega\) 2P = 4.88e− 04

(NS)

B = − 0.020,

\(\beta\) = − 0.019,

\(\omega\) 2P = − 0.001

(NS)

Misconceptions (MIS)

B = − 0.313,

OR = 0.73

(NS)

B = 0.106,

OR = 1.11

(NS)

  1. Odds ratio (OR): small = 1.68 (0.59), medium = 3.47 (0.29), large = 6.7 (0.15) (Chen et al. 2010)
  2. Partial omega squared (\(\omega\) 2P): small = 0.01, medium = 0.06, large = 0.14 (Lakens 2013)
  3. NS not significant
  4. *p ≤ 0.01, **p ≤ 0.001, ***p < 0.0001