Measured climate science knowledge significantly decreased pre- to post-intervention in all three groups, including controls¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r1 · q2
Currency · newest study 2016 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Each group (Control, IPCC, Comedy) showed a slight but significant decrease in HICCK-measured understanding of climate change science. → Carter 2016 q2 i? The decrease was nearly identical for liberal and conservative students. → Carter 2016 (2)

Evidence¶

Carter 2016¶

Carter, B. E., and Wiles, J. R. (2016). Comparing effects of comedic and authoritative video presentations on student knowledge and attitudes about climate change. Bioscene, 42(1), 16-24. https://eric.ed.gov/?id=EJ1103782

q2 · i? · causal · r1

Paired t-tests on HICCK pre/post scores in the quasi-experiment showed a significant decrease for every group; the article calls it "a slight but significant decrease in actual understanding of climate change science for each group." Only p-values and mean differences are printed, no effect size.

"For the Control group p = 0.00116 and mean of differences = -3.539; the IPCC group had p < 0.001, and mean of difference = -3.667, and the Comedy group p < 0.001 and mean of differences = -4.69."

Carter 2016 (2)¶

Carter, B. E., and Wiles, J. R. (2016). Comparing effects of comedic and authoritative video presentations on student knowledge and attitudes about climate change. Bioscene, 42(1), 16-24. https://eric.ed.gov/?id=EJ1103782

q2 · i? · causal · r1

Political-leanings comparison on the same pre/post HICCK measure: both liberals and conservatives showed significant decreases with nearly identical mean differences. No effect size is printed.

"Climate science knowledge significantly decreased pre- to post-intervention for both liberals (p < 0.001, mean of differences = -3.978) and conservatives (p < 0.001, mean of differences = -4.372)."

Discussion¶

Related Claims¶

• Comedic and authoritative scientific videos produced no significant difference in students' climate change knowledge or attitudes — related
• Overconfidence (bias) decreased from pretest to posttest across all groups including control, with no group differences — related
• No statistical difference between liberal and conservative students in the importance they placed on climate change — related
• Both groups improved significantly from pre-test to post-test with no pre-existing difference between them — related