米尔格伦电击实验

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The Milgram Experiment
One of the most famous studies of obedience in psychology was carried out by Stanley Milgram (1963).
Stanley Milgram, a psychologist at Yale University, conducted an experiment focusing on the conflict between obedience to authority and personal conscience.
He examined justifications for acts of genocide offered by those
accused at the World War II, Nuremberg War Criminal trials. Their
defense often was based on "obedience"
The experiments began in July 1961, a year after the trial of Adolf Eichmann in Jerusalem. Milgram devised the experiment to answer the question:
Could it be that Eichmann and his million accomplices in the Holocaust were just following orders? Could we call them all accomplices?" (Milgram, 1974).
Milgram (1963) wanted to investigate whether Germans were
particularly obedient to authority figures as this was a common
explanation for the Nazi killings in World War II. Milgram selected
participants for his experiment by newspaper advertising for male
participants to take part in a study of learning at Yale
University.
The procedure was that the participant was paired with another
person and they drew lots to find out who would be the ‘learner’
and who would be the ‘teacher’.
The learner (a confederate called Mr. Wallace) was taken into a room and had electrodes attached to his arms, and the teacher and researcher went into a room next door that contained an electric shock generator and a row of switches marked from 15 volts (Slight Shock) to 375 volts (Danger: Severe Shock) to 450 volts (XXX).
Milgram (1963) was interested in researching how far people would
go in obeying an instruction if it involved harming another
person.
Stanley Milgram was interested in how easily ordinary people could
be influenced into committing atrocities for example, Germans in
WWII.
Procedure:
Volunteers were recruited for a lab experiment investigating
“learning” (re: ethics: deception).
At the beginning of the experiment they were introduced to another
participant, who was actually a confederate of the experimenter
(Milgram).
They drew straws to determine their roles – learner or teacher –
although this was fixed and the confederate was always the learner.
There was also an “experimenter” dressed in a grey lab coat, played
by an actor (not Milgram).
Two rooms in the Yale Interaction Laboratory were used - one for the learner (with an electric chair) and another for the teacher and experimenter with an electric shock generator.
obedience.jpg
The “learner” (Mr. Wallace) was strapped to a chair with
electrodes. After he has learned a list of word pairs given him to
learn, the "teacher" tests him by naming a word and asking the
learner to recall its partner/pair from a list of four possible
choices.
The teacher is told to administer an electric shock every time the
learner makes a mistake, increasing the level of shock each time.
There were 30 switches on the shock generator marked from 15 volts
(slight shock) to 450 (danger – severe shock).
The learner gave mainly wrong answers (on purpose) and for each of these the teacher gave him an electric shock.
When the teacher refused to administer a shock the experimenter was to give a series of orders / prods to ensure they continued.
There were 4 prods and if one was not obeyed then the experimenter
(Mr. Williams) read out the next prod, and so on.
Prod 1: Please continue.
Prod 2:
The experiment requires you to continue. Prod 3: It is absolutely essential that you continue.
Prod 4: You have no other choice but to continue.
Results:
65% (two-thirds) of participants (i.e. teachers) continued to the highest level of 450 volts. All the participants continued to 300 volts.
Milgram did more than one experiment – he carried out 18 variations
of his study.
Conclusion:
Ordinary people are likely to follow orders given by an authority
figure, even to the extent of killing an innocent human
being.
People tend to obey orders from other people if they recognize their authority as morally right and / or legally based. This response to legitimate authority is learned in a variety of situations, for example in the family, school and workplace.
Milgram summed up in the article “The Perils of Obedience” (Milgram
1974), writing:
'The legal and philosophic aspects of obedience are of enormous import, but they say very little about how most people behave in concrete situations.
I set up a simple experiment at Yale University to test how much pain an ordinary citizen would inflict on another person simply because he was ordered to by an experimental scientist.
Stark authority was pitted against the subjects’ [participants’] strongest moral imperatives against hurting others, and, with the subjects’ [participants’] ears ringing with the screams of the victims, authority won more often than not.
The extreme willingness of adults to go to almost any lengths on the command of an authority constitutes the chief finding of the study and the fact most urgently demanding explanation.'
Milgrams' Agency Theory
Milgram (1974) explained the behavior of his participants by suggesting that people actually have two states of behavior when they are in a social situation:
-
The
autonomous state – people direct their own actions, and they take responsibility for the results of those actions. -
The
agentic state – people allow others to direct their actions, and then pass off the responsibility for the consequences to the person giving the orders. In other words, they act as agents for another person’s will.
Milgram suggested that two things must be in place in order for a person to enter the agentic state:
- The person giving the orders is perceived as being qualified to direct other people’s behavior. That is, they are seen as legitimate.
-
- The person being ordered about is able to believe that the authority will accept responsibility for what happens.
Agency theory says that people will obey an authority when they believe that the authority will take responsibility for the consequences of their actions. This is supported by some aspects of Milgram’s evidence.
For example, when participants were reminded that they had responsibility for their own actions, almost none of them were prepared to obey. In contrast, many participants who were refusing to go on did so if the experimenter said that he would take responsibility.
Milgram Experiment Variations
The Milgram experiment was carried out many times whereby Milgram
varied the basic procedure (changed the IV).
Obedience was measured by how many participants shocked to the maximum 450 volts (65% in the original study). In total 636 participants have been tested in 18 different variation studies.
Uniform
In the original baseline study – the experimenter wore a grey lab coat as a symbol of his authority (a kind of uniform). Milgram carried out a variation in which the experimenter was called away because of a phone call right at the start of the procedure.
The role of the experimenter was then taken over by an ‘ordinary member of the public’ ( a confederate) in everyday clothes rather than a lab coat. The obedience level dropped to 20%.
Change of Location
The experiment was moved to a set of run down offices rather than the impressive Yale University. Obedience dropped to 47.5%. This suggests that status of location effects obedience.
Two Teacher Condition
When participants could instruct an assistant (confederate) to press the switches, 92.5% shocked to the maximum 450 volts. When there is less personal responsibility obedience increases. This relates to Milgram's Agency Theory.
Touch Proximity Condition
The teacher had to force the learner's hand down onto a shock plate when they refuse to participate after 150 volts. Obedience fell to 30%.
The participant is no longer buffered / protected from seeing the consequences of their actions.
Social Support Condition
Two other participants (confederates) were also teachers but refused to obey. Confederate 1 stopped at 150 volts and confederate 2 stopped at 210 volts.
The presence of others who are seen to disobey the authority figure reduces the level of obedience to 10%.
Absent Experimenter Condition
It is easier to resist the orders from an authority figure if they are not close by. When the experimenter instructed and prompted the teacher by telephone from another room, obedience fell to 20.5%.
Many participants cheated and missed out shocks or gave less voltage than ordered to by the experimenter. Proximity of authority figure effects obedience.
Critical Evaluation
The Milgram studies were conducted in laboratory type conditions
and we must ask if this tells us much about real-life situations.
We obey in a variety of real-life situations that are far more
subtle than instructions to give people electric shocks, and it
would be interesting to see what factors operate in everyday
obedience. The sort of situation Milgram investigated would be more
suited to a military
context.
Orne & Holland (1968) accused Milgram’s study of lacking ‘experimental realism’, i.e. participants might not have believed the experimental set-up they found themselves in and knew the learner wasn’t really receiving electric shocks.
Milgram's sample was biased:
-
The participants in Milgram's study were all male. Do the findings transfer to females?
-
Milgram’s study cannot be seen as representative of the American population as his sample was self-selected. This is because they became participants only by electing to respond to a newspaper advertisement (selecting themselves). They may also have a typical "volunteer personality" – not all the newspaper readers responded so perhaps it takes this personality type to do so.
Yet a total of 636 participants were tested in 18 separate experiments across the New Haven area, which was seen as being reasonably representative of a typical American town.
Milgram’s findings have been replicated in a variety of cultures and most lead to the same conclusions as Milgram’s original study and in some cases see higher obedience rates.
However, Smith & Bond (1998) point out that with the exception of Jordan (Shanab & Yahya, 1978), the majority of these studies have been conducted in industrialized Western cultures and we should be cautious before we conclude that a universal trait of social behavior has been identified.