and generally “beware the one of just one study”
I read this. This is about the first study, which was retracted. However, a second, carefully monitored and reviewed study found most of the same results, including the remarkably high effect size of one in ten people appearing to completely drop their prejudice toward homosexuals after the ten-minute intervention.
Yes beware the one study. But in the absence of data, small amounts are worth a good deal, and careful reasoning from other evidence is worth even more.
My reasoning from indirect data and personal experience are in line with this one study. The 900 studies on how minds don’t change are almost all about impersonal, data-and-argument based approaches.
Emotions affect how we make and change beliefs. You can’t force someone to change their mind, but they can and do change their mind when they happen to think through an issue without being emotionally motivated to keep their current belief.
As mentioned above, David addresses this in the book. There was an unfortunately fraudulent paper published due to (IIRC) the actions of a grad student, but the professors involved retracted the original paper and later research reaffirmed the approach did work.