“For every $100 earned by an average white family, how much do you think was earned by an average black family in 2013?” The average respondent guessed $85.59, meaning they thought black families make $14.41 less than average white families. The real answer, based on the Current Population Survey, was $57.30, a gap of $42.70. Study participants were off by almost 30 points.
The gap between estimate and reality was largest for a question about household wealth. Participants guessed that the difference between white and black households would be about $100 to $85, when in reality it’s $100 to $5. In other words, study participants were off by almost 80 points.