There is often strong social
pressure for people’s judgments and beliefs to conform to those of people
around them. It can be hard to be the
only person in a group to express a divergent opinion. At times, people will actually express an
opinion closer to that of others while with a group in order to fit in.
What is the long-term impact of
this conformity?
It is difficult to study this
question, because it is hard to set up situations in which people
disagree. In addition, it is hard to get
enough observations for each person to be able to make a strong statistical
claim about the effect of conformity.
An paper by Hi Huang, Keith
Kendrick, and Rongjun Yu in the July, 2014 issue of Psychological Science explored this question using judgments of
facial attractiveness. Although the
study is not entirely satisfying, it has some intriguing effects.
In this study, participants rated
the attractiveness of 280 faces on a scale from 1 (not very attractive) to 8
(very attractive). After making their
rating, participants saw a rating that they were told reflected the average
rating from 200 other people who had seen the same picture. The rating they saw was either the same as
the one they gave, or was between 1 and 3 points higher or lower.
Across studies, participants then
returned to the lab 1, 3, or 7 days later, or 3 months later. Then, they rated the attractiveness of the
same set of faces.
It is actually difficult to
examine the second set of ratings statistically. The group rating can only be substantially
higher than the participant’s rating for faces that the participant rated as
relatively unattractive. The group
rating can only be substantially lower than the participant’s rating for those
that the participant rated as relatively attractive. So, changes in the rating from one session to
the next might just reflect a tendency to move more extreme ratings toward the
middle of the scale.
The researchers used a statistical
technique to control for this tendency for high ratings to get lower and for
low ratings to get higher. With this
statistical control, they found that faces that they rated as attractive in the
first session were seen as less attractive in a subsequent session when the
group rating was lower than the participant’s rating. However, this effect occurred only when the
section session was 1 or 3 days after the first session. By 7 days later (and also 3-months later),
there was no significant effect of the group rating on the participant’s later
rating.
This result suggests that when
people hear an opinion that deviates from their own, there is a small tendency
to revise their opinion in the direction of the group. However, these effects are small and
short-lived. After about 3 days, the
group influence seems to be gone.
On the one hand, this is an
intriguing finding. It suggests that
just being exposed to the opinions of other people once does not necessarily
have a long-term influence on a person’s beliefs.
That said, there is a lot more
work that needs to be done on this issue.
People see many faces each day, and so it is not clear why group
judgments about attractiveness ought to have a long-term impact on people’s beliefs. In contrast, political beliefs or social
beliefs might be more susceptible to the impact of other people. In addition, people made a total of 280
judgments in each session of the study.
It is hard to believe that participants could really remember the judgments
of others. Indeed, it is surprising that
there was any effect of the group judgment at all in this study.
In the end, this study provides an
interesting demonstration of how hard it can be to test what seems like a
straightforward question.