123maleAmerican undergraduates were places into groups of 6 - with 1 genuine participant and 5 confederates
Aim was to investigate conformity and majority influence
What was Asch's procedure?
Groups were presented with 4 lines - 1 standard line and 3comparison lines
Participants were asked to state which of the 3 lines was the same length as the standard line
Real participant always asked last/ second to last
Confederates gave same incorrect answer for 12/18 trials
What were Asch's findings?
36.8% conformed and 25% never conformed
75% conformed at least once
How did Asch investigate group size as a variable affecting conformity and what did he find?
Conformity was low when there were less than 3 confederates, any above 3 and conformity rose by 30%
But it did not increase after 4 so no overwhelming majority is needed
Shows that majority must be at least 3 to exert an influence - but individuals are more likely to conform when in a larger group
How did Asch investigate unanimity of majority as a variable affecting conformity and what did he find?
When joined by a dissenter, conformity fell to 5.5% which appeared to free the genuine participant to behave more independently
Suggests that influence of the majority depends on it being unanimous, and that it is vital on establishing a consistent majority view
How did Asch investigate task difficulty as a variable affecting conformity and what did he find?
Asch increased difficulty by making the comparison lines similar to the standard line in length, making it harder for ppts. to see the differences
Conformity increased showing that we look to others for confirmation when the task is difficult - links to informational social influence
What is high internal validity a strength of Asch's investigation on conformity?
Experiment has strict control over extraneous variables like the timing of assessments and the type of task used
Confounding variable of lack of knowledge was controlled by doing the experiment without confederates beforehand
Suggests a valid 'cause and effect' relationship can be established as well as high reliability
What research support strengthen's Asch's investigation on conformity?
Lucas et al asked participants to solve easy and hard maths problems with answers from 3 other students
Conformity was higher with the hard questions
Supports Asch's claim that task difficulty affects conformity
How does artificial stimuli weaken Asch's experiment?
Task and situation were trivial and based on peoples' perception of lines
Findings cannot be generalised to real life because it does not reflect the complexity of real-life conformity where other variables exert influence
Shows low ecological validity because of lack of real reflectivity
Also may produce behaviour affected by demand characteristics as ppts. know they are in an experiment and have no reason not to conform
How does artificial stimuli weaken Asch's experiment?
Task and situation were trivial and based on peoples' perception of lines
Findings cannot be generalised to real life because it does not reflect the complexity of real-lifeconformity where other variables exert influence
Shows low ecological validity because of lack of real reflectivity
Also may produce behaviour affected by demand characteristics as ppts. know they are in an experiment and have no reason not to conform
How does population validity and cultural bias weaken Asch's experiment?
Asch's sample was culturally biased as it consisted of only whiteAmerican men
US is a mostly individualistic culture where people are more concerned about themselves
Similar studies conducted in collectivist cultures show conformity is higher as they place higher value on groups not individuals
Shows that Asch's findings tell us little about conformity in people from other cultures
What was Zimbardo's sample and aim?
21 Americanmale students volunteered
Aim was to investigate how readily people would conform to the social roles in a simulated environment
What was Zimbardo's procedure?
Simulated prison in a university basement
Students were randomly assigned the roles of guard or prisoner - prisoners had to wear uniforms and were only referred to by numbers creating a loss of identity (de-individuation)
Guards were given handcuffs and mirror shades to reinforce boundaries and creating social hierarchy
All were encouraged to identify with their roles - like guards having complete power over the prisoners
What were Zimbardo's findings?
Guards treated prisoners harshly, harassing and tormenting them and enjoying their new-found power
Prisoners forgot their previous lives and snitched on other prisoners to please guards, showing their belief that the prison was real
Prisoners would defend guards when others would break rules - reinforcing their social roles in the hierarchy
Prisoners became depressed after their rebellion was put down - one was released showing signs of psychological disturbance
Guards became increasingly brutal - study had to end after 6 days
How is control a strength of Zimbardo's experiment?
Control over key variables like selecting emotionally stable participants and randomly assigning them to roles - ruled out personality differences as an explanation of the findings
Increases internal validity by establishing cause and effect
How does the lack of ecological validity weaken Zimbardo's experiment?
Participants knew they were participating in a study and may have changed their behaviour to what they thought was expected of them (demand characteristics)
One guard said he based his role on a brutal stereotypical guard from the film Cool Hand Luke
Reduces the validity of the findings as they don't reflect real-life prison situations
How does the lack of population validity weaken Zimbardo's experiment?
Zimbardo's sample consisted of only American students meaning it is an example of ethnocentric research - it cannot be generalised to other cultures
Collectivist cultures may be more conformist to their roles because they value the needs of the group over the individual
Suggests that Zimbardo's findings are culture-bound and lack generalisability
How do ethical issues weaken Zimbardo's experiment?
Participants were not protected from stress, anxiety, emotional distress and embarrassment
One participant had to be released as he showed signs of psychological disturbance (uncontrollable screaming and crying)
Study would be deemed unacceptable according to modern ethical standards