Table 1.

Overview of issues and measures in the questionnaire.

measure	issue
	global warming	race and crime
attitude (non-incentivized question)	temperatures in the United States have increased drastically during the last 100 years (indicate agreement)	generally, the more African or Black American people live in an area in the United States, the higher the crime rate in the area (indicate agreement)
estimate (incentivized task)	estimate the temperature difference between the 1950s and 2010s in a random US state	estimate the difference in homicide mortality between the US states with the third highest and third lowest African/Black Americans’ proportion
estimate difference (incentivized task)	difference of estimate between (myself) and someone with opposing partisan preferences	difference of estimate between (myself) and someone with opposing partisan preferences