Investigatin whether
people would be
influence by others
in an ambiguous
situation.
Method?
Participants, tested individually, were
shown a point of light in a totally
darkened room. The light was not
moving. Each participant was asked
to estimate how far and in which
direction the light had moved.
In the second part of the
experiment participants were
put into small groups of about
three people. each was asked
to describe the movement of
the light in the presence of
others.
Results?
When alone estimates
were widespread. But
over a number of trials
the answers converged
and the gave similar
estimates
Conclusion?
In an ambiguous situation, participants are influenced by
the judgment of others.
Evaluation?
Strengths?
Sherif did not sake the participants to arrive at a
group decision but participants still conformed, thus,
illustrates majority influence due to group pressure
As the design used was
repeated measures the
differences between conditions
are due to changes in your IV
not due to participant variable
because you're using the same
participants.
Weaknesses?
It is not unusual for people to conform if they are not
certain of their own judgment and therefore suggests
nothing surprising about human behaviour.
Repeated measures means that there
will be order effects (for example
recognising demand characteristics).
Low ecological validity as it was a
lab experiment and is therefore and
unnatural environment. behaviour
may not reflect real life.
Asch (1951)
Type of experiment?
Aim?
To investigate whether
people would conform to the
judgements of others in
situations where such
judgements were clearly
wrong.
Method?
Male students were asked to take part in a study of
visual discrimination. They were tested in groups of nine.
In each group there was only one genuine 'naïve'
participant. All the other participants were confederates
(or stooges). The participants were seated in a semi
circle. Their task was to decide which one of the three
comparison lines shown to them was the same length as
the standard line. they had to give their judgement aloud
in the order in which they were seated, with the naïve
participant answering second to last. There were
eighteen trials. In six trials the stooges gave the correct
answer but on the other twelve they gave the same
wrong answer. There was a control group where
confederates gave correct answers.
Variations?
Size of the majority?
Asch ran groups in which the size of the
majority was changed from one to sixteen. One
person (the stooge) ha not real effect on
conformity. Two stooges in the majority
produced 13% errors. Three stooges produced
33% errors. The addition of further stooges
does not lead to further increases in
conformity.
Unanimity?
Asch wondered if the unanimity of the groups
made the naive participant feel isolated,
increasing the tendency to conform. Asch
broke the unanimity and gave the participant a
'supporter', that is a stooge who answered
before the participant and who gave a different
answer to that of the group. The results
showed that a break in unanimity, even when
the answer is wrong, reduced conformity to
around 5.5%.
Allen and Levine (1971)
arrange for the supporter
to appear as if they had
extremely poor vision.
Even in such situations
conformity was reduced
though not quite as
much as when the
supporter appears
convincing.
Task difficulty?
The more difficult the task, the heater the
conformity. Linked to this is the belief tin
one's competence. Research has found
that those who perceive themselves as
competent in tasks conform less that
others. Perrin and Spencer (1981)
replicated Asch's using British students who
were studying engineering, maths and
chemistry (they wanted to avoid students
who might have been familiar with Asch's
study). These students remained
independent, reporting correct answers
even though they faced unanimous
majority. In several hundred trials only one
error was made. One possible explanation
is that these students considered
themselves competent. Engineering
students in particular need to be precise
when using lines.
Anonymity?
When the incorrect major called out their
judgement but the single naïve participant
wrote his down privately, conformity
dropped to just over 12%. This suggests
that we are still influenced by others even
when asked for our private views. An
example of this is voting behaviour. Even
though we can vote in private , our views
may still be influenced by the media and
our friends before reaching a decision.
Campaigners are aware of this, which is
why they use facts selectively to influence
peoples vote.
Self esteem?
Asch (1956) suggested that
people with low self esteem
conform more than people with
high self esteem. This is possibly
linked to a strong need for social
approval.
Results?
Asch measures the number of times
each participant conformed to the majority
view: approximately one third (33%) of
participants conformed with the clearly
incorrect majority on the critical trials. He
found that 75% of all participants
conformed at least once. whereas in the
control group less than 1% gave the
wrong answer.
Conclusion?
Asch demonstrated that people will
conform to the majority view even
when that answer is obviously
incorrect. It showed that groups exert
pressure on an individual in some way
to make them conform to majority view.
Ach asked
participants
following the
experiment how
they had felt in that
group. All said they
felt uncomfortable
and doubtful of
their own
judgements.
Evaluation?
Strengths?
Weaknesses?
Baron, Vandello and Brunsman (1996)
Type of experiment?
Aim?
Method?
They gave participants an eyewitness task,
showing them a picture of a perpetrator and then
having them pick that person out of a lineup. The
task was ambiguous by having the perpetrator
dressed differently in the lineup tun in the original
photo and, and by flashing the lineup for only half a
sec on. The importance of the task was
manipulated by telling some