Table 1.

Change in beliefs about climate change from 2019 to 2020

Item	Mean difference (T2 –T1)	Significance	Cohen’s d (effect size)
I am convinced that climate change is really happening	0.07	0.029	0.08
Claims that human activities are changing the climate are exaggerated	−0.13	0.001	0.08
The evidence for climate change is unreliable	−0.11	0.002	0.05
Climate change is just a natural fluctuation in Earth’s temperatures	−0.11	0.001	0.07
The media is often too alarmist about issues like climate change	−0.05	0.149	0.03