When
the wine names appeared with decorative photos, such as an image of a
haystack, people were far more likely to say it was an excellent wine.
“Of
course, the photo really shouldn’t affect your judgment because it
tells you nothing about the wine. In one of our studies, people actually
got to taste the wine, and the presence of photos made them more likely
to say the wines tasted better,” says Brittany.
Brittany
also examined how trivially-related photos shaped people’s memories.
Participants saw a list of unfamiliar animal names, and were asked to
give food to some animals and take food away from others. Just a few
minutes later, people saw the same list again, but this time some of the
names appeared with a photo of the animal.
When
asked to remember if they gave food to each animal, people were more
likely to say they had performed the action if they saw a photo.
“The
really interesting thing is that in all of these experiments the photos
led people to think the positive version of the claims were true—that
wines were good, or that they had given animals food,” said Brittany.
Brittany’s
findings demonstrate that even trivial information can have a powerful
effect on our judgments and distort our beliefs about the world.
“The
findings might seem surprising but they actually make a lot of sense,
because we know that when people can easily conjure up thoughts and
images about something, they actually feel more positive about that
thing. We think that’s how photos swayed people’s judgments in our
experiments, and why they did so only for positive claims.”
The
studies were conducted at Victoria University of Wellington under the
supervision of Professor Maryanne Garry from the School of Psychology.
